Nissan Altima Reliability: Best Years, Years to Avoid, Common Problems, Repair Costs & Lifespan

Is the Nissan Altima reliable? Which Altima years are the best to buy, which should you avoid, and how many miles can an Altima realistically last?

The answer depends heavily on the model year and powertrain. The Altima has used some durable engines over the years, particularly Nissan's naturally aspirated four-cylinders and V6, but CVT transmission problems became the defining reliability concern for many Altimas beginning in the late 2000s.

That creates an unusual used-car situation. An Altima can have a perfectly healthy engine at 120,000 or 150,000 miles while the condition of its continuously variable transmission determines whether the car is still a good purchase.

This guide covers the 2002-2024 U.S. Nissan Altima, including the 2.5L four-cylinder, 3.5L V6, CVT-equipped models, newer 2.0L VC-Turbo and available all-wheel drive. We'll separate the generations because reliability can vary substantially between them.

In This Guide You'll Learn

• Which Nissan Altima years are generally the best used buys
• Which Altima years deserve extra caution
• How reliability compares between Altima generations
• How reliable the Nissan Altima 2.5L engine is
• Whether the 3.5L V6 is a good long-term engine
• Which Altima years have the most serious CVT concerns
• Whether newer Nissan Altima CVTs are more reliable
• What to know about the 2.0L VC-Turbo engine
• Whether AWD adds meaningful reliability concerns
• How many miles a Nissan Altima can realistically last
• Whether an Altima with 100,000 or 150,000 miles is worth buying
• What to inspect before buying a high-mileage Altima

Nissan Altima Reliability Overview

The Nissan Altima has a mixed long-term reliability record. Many Altimas reach high mileage, and several of Nissan's engines have proven capable of long service lives. Transmission reliability is what prevents the Altima from earning a stronger overall recommendation.

The 2002-2006 third generation predates widespread Altima CVT use. These cars used conventional automatic or manual transmissions with either a 2.5L four-cylinder or 3.5L V6. They have their own age-related and engine-specific problems, but they avoid the CVT issue that dominates discussion of many later Altimas.

The redesigned 2007-2012 fourth generation introduced widespread CVT use and represents an important turning point. The 2.5L four-cylinder and excellent 3.5L V6 could provide substantial mileage, but CVT overheating, whining, hesitation and failure became major concerns.

The 2013-2018 fifth generation continued the CVT formula. These cars can be inexpensive and fuel-efficient used transportation, but early examples—particularly 2013-2015 cars—deserve substantial transmission scrutiny. Later fifth-generation Altimas are generally more appealing.

The 2019-2024 sixth generation is considerably newer and more refined. Most use a naturally aspirated 2.5L four-cylinder, while certain models offered Nissan's technologically complex 2.0L variable-compression turbo engine. All-wheel drive also became available with the 2.5L.

Bottom Line: The Altima isn't a car I'd judge simply by mileage. Engine condition, CVT history and maintenance records matter more than the odometer alone. A documented 120,000-mile Altima with a healthy transmission can be a better purchase than a 70,000-mile example with questionable CVT behavior.

Nissan Altima Reliability at a Glance

How Many Miles Can a Nissan Altima Last?

A well-maintained Nissan Altima can realistically last 150,000 to 200,000 miles, and some Altimas exceed 250,000 miles. The biggest qualification is that the engine may be capable of considerably more mileage than the transmission.

That's especially important with CVT-equipped Altimas. Nissan's naturally aspirated 2.5L four-cylinder and 3.5L V6 can both be durable engines, but an expensive CVT failure can effectively end the useful life of an older car even when its engine remains healthy.

Earlier 2002-2006 Altimas with conventional transmissions avoid that particular concern, although age, rust, oil consumption and other mechanical wear now become increasingly important.

For newer Altimas, the naturally aspirated 2.5L remains the powertrain I'd generally favor for straightforward long-term ownership. The 2.0L VC-Turbo offers substantially more performance but adds turbocharging and variable-compression technology, making it considerably more complicated.

• 100,000 miles: Not unusually high for a well-maintained Altima. On CVT models, transmission history should already be an important part of the buying decision.
• 150,000 miles: Very achievable with good maintenance, particularly when the engine and transmission remain healthy.
• 200,000 miles: Realistic for a good Altima, although a CVT replacement or other significant repairs may occur along the way.
• 250,000+ miles: Certainly possible, especially with strong maintenance history, but I'd consider this excellent longevity rather than something every Altima will achieve.

Bottom Line: Expect approximately 150,000 to 200,000 miles from a well-maintained Nissan Altima, with 200,000-plus possible. On CVT-equipped cars, transmission longevity is often the biggest factor determining whether the vehicle actually remains economical to keep that long.

Nissan Altima Reliability by Generation

2002-2006: Third-Generation Nissan Altima

The redesigned 2002 Nissan Altima was larger and more powerful than its predecessor and established the formula that made the Altima one of America's major midsize sedans.

Two engines dominate this generation: the 2.5L QR25DE four-cylinder and the 3.5L VQ35DE V6. Unlike later Altimas, these cars used conventional automatic or manual transmissions rather than a CVT.

That mechanical simplicity is appealing today, but these cars are now roughly two decades old. Condition, maintenance history and corrosion can matter more than small differences between model years.

2002-2003 Nissan Altima Reliability

The 2002 Altima was the first year of a major redesign, and early 2.5L cars deserve particular caution.

One important issue involved the pre-catalytic converter. Deteriorating catalyst material could contribute to internal engine damage on affected 2.5L engines, and excessive oil consumption became a serious concern on some cars.

These early models can also suffer from the ordinary consequences of age: oil leaks, worn engine mounts, deteriorated suspension components, cooling-system problems, electrical faults and rust.

The 3.5L V6 generally has a stronger engine reputation, although maintenance and previous-owner treatment remain critical this many years later.

Buyer Tip: I'd be cautious about buying a 2002-2003 2.5L Altima unless its history and current engine condition are unusually convincing.

2004-2006 Nissan Altima Reliability

The 2004-2006 Altima represents the more mature portion of the third generation and is generally where I'd look if considering one today.

The 2.5L still requires attention to oil consumption and engine condition, but later production is preferable to the earliest examples.

The 3.5L VQ35DE V6 is particularly noteworthy. Nissan's VQ-series V6 has a strong durability reputation, and a properly maintained 3.5L Altima can accumulate substantial mileage.

Because these cars use conventional transmissions, they also avoid the CVT reliability question that complicates nearly every later Altima purchase.

Buyer Tip: A clean 2005-2006 Altima 3.5L with good maintenance records can still be an interesting inexpensive used car, but at this age I'd insist on a thorough inspection for leaks, suspension deterioration and rust.

Common 2002-2006 Nissan Altima Problems

• Oil consumption on some 2.5L engines
• Pre-catalytic converter-related concerns on earlier 2.5L models
• Oil leaks
• Engine-mount deterioration
• Cooling-system problems
• Suspension wear
• Wheel-bearing wear
• Electrical and sensor problems
• Power-window and accessory issues
• Rust and underbody corrosion
• Age-related automatic transmission wear

Buyer Tip: The absence of a CVT is a real advantage, but don't confuse mechanical simplicity with immunity from age. A 20-year-old Altima needs to be judged as an individual car.

2007-2012: Fourth-Generation Nissan Altima

The 2007 Altima introduced a redesigned fourth generation and marks one of the most important transitions in the model's reliability history: widespread use of Nissan's Xtronic CVT.

The familiar 2.5L four-cylinder remained the volume engine, while the 3.5L V6 continued to provide considerably stronger performance. Both engines can be durable, but transmission reliability became the much larger concern.

2007-2009 Nissan Altima Reliability

The 2007 Altima combines first-year redesign risk with early-generation CVT technology, making it a year I'd approach cautiously today.

Early CVTs could develop whining, overheating, hesitation, reduced acceleration and eventual internal failure. Some problems became more apparent after extended highway driving or in high temperatures.

The 2008 and 2009 models benefited from additional production experience, but they remain early CVT-era cars and are now old enough that transmission history should carry substantial weight.

Buyer Tip: If an early fourth-generation Altima develops noticeable CVT whine, hesitation or loss of acceleration after warming up, I wouldn't buy it hoping that a fluid service will solve the problem.

2010-2012 Nissan Altima Reliability

The 2010-2012 Altima represents the mature end of fourth-generation production and is generally preferable to the earliest cars.

The engines can provide substantial mileage, particularly with consistent oil changes. The 3.5L V6 remains an appealing engine from a durability and performance standpoint.

However, the CVT remains the component that can turn a seemingly good high-mileage Altima into an expensive purchase.

When considering one today, I'd want to know whether the CVT has received proper fluid service, whether it has ever been replaced, and how it behaves after a lengthy test drive.

Buyer Tip: Among fourth-generation cars, I'd generally favor a well-maintained 2010-2012, but I'd still make CVT condition a deciding factor.

2.5L vs. 3.5L Altima Reliability

Both engines can provide good long-term service, but they appeal to somewhat different buyers.

The 2.5L four-cylinder is economical, widely available and generally less expensive to operate. High-mileage examples should be checked for oil consumption, leaks, ignition issues and timing-chain-related noise.

The 3.5L VQ35DE V6 has an excellent basic engine reputation and provides substantially stronger performance. It can readily reach high mileage when properly maintained.

But a strong V6 doesn't eliminate the CVT issue. On CVT-equipped generations, the transmission remains an important potential weak point regardless of which engine is attached to it.

Buyer Tip: If engine durability alone were the question, I'd have considerable confidence in a properly maintained VQ35DE. For the entire vehicle, however, transmission history remains equally important.

Common 2007-2012 Nissan Altima Problems

• CVT overheating, whining and premature failure
• Hesitation or reduced acceleration
• Oil consumption on individual 2.5L engines
• Oil leaks
• Engine-mount wear
• Steering and suspension wear
• Wheel-bearing noise
• Electrical problems
• Dashboard and interior deterioration on some cars
• Air-conditioning problems
• Rust and corrosion on older northern vehicles

Buyer Tip: A fourth-generation Altima with a documented replacement CVT isn't automatically a car to avoid. Depending on when and how the replacement was performed, that history can actually be preferable to an unknown original transmission at very high mileage.

2013-2018: Fifth-Generation Nissan Altima

The 2013 Altima brought another complete redesign. Nissan emphasized fuel economy, comfort and value, and the Altima became an extremely common family, commuter and fleet sedan.

The powertrain formula remained familiar: a 2.5L four-cylinder or 3.5L V6 paired with a CVT.

Unfortunately, the early fifth-generation years are among the Altimas where transmission history deserves the most attention.

2013-2015 Nissan Altima Reliability

The 2013 Altima is a year I'd approach with considerable caution. It was the first year of the redesigned generation and has a substantial history of CVT-related complaints.

Symptoms can include shuddering, hesitation, delayed response, abnormal noises and eventual transmission failure.

The 2014 and 2015 Altima benefited from additional production experience but don't completely escape the transmission concern. These cars are now inexpensive on the used market, which can make them attractive until the potential cost of a major CVT repair is considered.

There were also other issues reported across this period, including electrical problems, air-conditioning concerns, interior hardware failures and suspension wear.

Buyer Tip: I'd want an unusually good combination of condition, maintenance history and price before choosing a 2013-2015 Altima over a later example.

2016-2018 Nissan Altima Reliability

The 2016-2018 Altima represents the more mature portion of fifth-generation production and is generally more attractive than the early cars.

These years received styling and equipment updates while retaining the familiar 2.5L and available 3.5L powertrains.

CVT condition still matters. I'd resist the temptation to describe these years as having the transmission issue completely "fixed." A used-car buyer should still check service history and evaluate the transmission carefully when hot.

That said, a well-maintained later fifth-generation Altima can provide comfortable and economical transportation at a relatively modest purchase price.

Buyer Tip: If shopping this generation, I'd generally start with 2016-2018 rather than 2013-2015, then choose the individual car with the strongest maintenance and transmission history.

Common 2013-2018 Nissan Altima Problems

• CVT judder, hesitation and premature failure
• Delayed acceleration
• Transmission noise
• Oil consumption or leaks on individual engines
• Air-conditioning problems
• Electrical and infotainment issues
• Power-lock and window problems
• Wheel-bearing wear
• Suspension noise and deterioration
• Engine and transmission mount wear
• Interior trim and hardware deterioration

Buyer Tip: Don't let an attractive price distract you from the CVT. On an older Altima, a several-thousand-dollar transmission replacement can quickly erase whatever you saved when buying the car.

2019-2024: Sixth-Generation Nissan Altima

The 2019 Altima introduced the sixth generation with major changes to styling, technology and available powertrains.

The familiar naturally aspirated 2.5L four-cylinder remained the mainstream engine, while Nissan introduced an optional 2.0L VC-Turbo four-cylinder. All-wheel drive also became available with the 2.5L engine.

These cars are newer than the Altimas responsible for much of Nissan's historical CVT reputation, but buyers should still evaluate the transmission rather than assuming every reliability concern disappeared with the redesign.

Later-model Altimas also tend to retain their value well. A lightly used example can sometimes cost surprisingly close to a properly negotiated new Altima purchase, so it's often a good idea to compare both alternatives rather than assume the used vehicle automatically represents the better value.

If you're serious about buying soon, I'd recommend reading my most effective negotiation methods for either new cars or used cars. Each explains a quick way to identify the dealerships most motivated to "deal", no matter how busy they may seem, and how to follow up once you've found them. That can be the difference between getting a good price and getting a great one.

2019-2020 Nissan Altima Reliability

The 2019 Altima was the first year of an entirely redesigned generation, so I'd give it the additional scrutiny appropriate to any first-year model.

The standard 2.5L engine is relatively conventional and is the powertrain I'd generally favor for someone prioritizing long-term simplicity.

The optional 2.0L VC-Turbo is considerably more sophisticated. Nissan's variable-compression technology mechanically changes the engine's compression ratio to balance efficiency and performance.

It's impressive technology, but a turbocharged, direct-injected variable-compression engine has more complexity than the naturally aspirated 2.5L.

The 2020 Altima benefits from another year of sixth-generation production and can be a reasonable used choice, particularly with the 2.5L engine and documented maintenance.

2021-2022 Nissan Altima Reliability

The 2021 and 2022 Altima are among the sixth-generation years I'd investigate most closely.

They avoid the first model year while retaining a relatively mature version of the current platform. For a reliability-focused buyer, the naturally aspirated 2.5L is particularly appealing because it avoids the additional mechanical complexity of the VC-Turbo.

That doesn't make the 2.5L/CVT combination risk-free. Transmission behavior, fluid history and overall maintenance should still be checked.

Buyer Tip: A well-maintained 2021-2022 Altima 2.5L strikes a reasonable balance between vehicle age, modern safety features, fuel economy and powertrain simplicity.

2023-2024 Nissan Altima Reliability

The 2023-2024 Altima represents mature sixth-generation production and benefits from several years of refinement.

These cars are still relatively young, however, so I'd distinguish between good early reliability and proven long-term durability. There simply aren't enough 200,000-mile 2023-2024 Altimas to make the same longevity judgments we can make about older generations.

The naturally aspirated 2.5L remains my preferred engine for a buyer focused primarily on uncomplicated long-term ownership.

The 2.0L VC-Turbo offers substantially more performance, but its added complexity means I'd put greater emphasis on maintenance records and warranty history.

Buyer Tip: Later doesn't automatically mean proven for 200,000 miles. The 2023-2024 Altima looks more promising than many early CVT-era Altimas, but its ultimate high-mileage record is still being established.

Nissan Altima 2.0L VC-Turbo Reliability

The 2.0L VC-Turbo was designed to provide V6-like performance with four-cylinder fuel economy. It uses turbocharging, direct injection and a mechanical system that varies the engine's compression ratio.

For someone buying primarily for performance, it's an interesting engine. For someone buying primarily for long-term simplicity, I'd choose the naturally aspirated 2.5L.

The reason isn't that every VC-Turbo is destined to fail. It's that additional mechanical and thermal complexity creates more potential long-term repair exposure, while the conventional 2.5L has a much longer history in mainstream Nissan vehicles.

Bottom Line: For a used Altima that you hope to keep well beyond 100,000 miles, the naturally aspirated 2.5L is my preferred sixth-generation engine.

Nissan Altima AWD Reliability

All-wheel drive became available on sixth-generation Altimas equipped with the 2.5L engine.

AWD isn't inherently unreliable, but it adds driveline components that a front-wheel-drive Altima doesn't have. That means additional bearings, seals and hardware that can eventually require service.

For buyers who regularly deal with snow or poor traction, AWD can be worthwhile. For someone in a warm climate who doesn't need it, FWD is mechanically simpler.

On a used AWD Altima, inspect the driveline for leaks or abnormal noise and make sure all four tires are appropriately matched in size and wear.

Buyer Tip: I'd choose AWD when you genuinely benefit from the traction. Otherwise, FWD provides the simpler long-term ownership proposition.

Common 2019-2024 Nissan Altima Problems and Concerns

• CVT operation and long-term durability
• Electrical and infotainment glitches
• Battery-related issues
• Driver-assistance sensor and warning problems
• Oil leaks or consumption on individual higher-mileage engines
• Air-conditioning problems
• Wheel-bearing and suspension wear as mileage accumulates
• Additional complexity of the 2.0L VC-Turbo engine
• Additional AWD driveline components on equipped vehicles

Buyer Tip: For long-term ownership, I'd generally favor a later sixth-generation Altima with the naturally aspirated 2.5L. It doesn't eliminate the need to evaluate the CVT, but it avoids the additional complexity of the VC-Turbo powertrain.

Which Nissan Altima Generations Have the Biggest Reliability Differences?

• 2002-2006: Mechanically simpler and no widespread CVT use, but vehicle age, early 2.5L engine concerns and rust now matter considerably.
• 2007-2012: Durable engines combined with early CVT technology; transmission condition is the primary concern.
• 2013-2015: Early fifth-generation cars deserve substantial CVT scrutiny and are among the years I'd approach most cautiously.
• 2016-2018: Mature fifth-generation cars and generally preferable to 2013-2015, although CVT history still matters.
• 2019-2020: Redesigned sixth generation with newer technology; 2.5L models offer the simpler engine choice.
• 2021-2024: Mature sixth-generation vehicles; naturally aspirated 2.5L models are particularly interesting for reliability-focused buyers, while long-term durability of the newest cars is still developing.

For more Nissan model reliability information, see our Nissan Reliability and Problems Guide. This comprehensive guide details the best used Nissan models and years, common problems to watch for, the best years to buy or those to avoid, and more.

Bottom Line: The Altima's reliability history is really two stories. The engines are often capable of impressive mileage, while the CVT can be the limiting factor. Older 2002-2006 cars avoid the CVT entirely but now face substantial age-related concerns. Later 2016-2018 cars are generally preferable within the fifth generation, while a well-maintained 2021-2024 Altima with the naturally aspirated 2.5L is among the newer versions I'd investigate first.

Best Nissan Altima Years to Buy

The best Nissan Altima years depend partly on your budget. An older Altima with a conventional automatic can offer mechanical simplicity, while later Altimas provide better safety, fuel economy and refinement. For most used buyers, however, I'd concentrate on later years within each generation rather than the first years of a redesign.

Best Older Altimas: A clean 2005-2006 can still be interesting because these cars predate widespread Altima CVT use. The 3.5L V6 is particularly attractive from an engine-durability standpoint, although age and condition now matter enormously.

Best Mid-Priced Altimas: I'd generally favor 2016-2018 over 2013-2015 if shopping the fifth generation. The later cars benefit from mature production, although CVT history still needs careful investigation.

Best Newer Altimas: A 2021-2022 Altima with the naturally aspirated 2.5L is one of my preferred combinations. These cars avoid the first year of the sixth-generation redesign and the added complexity of the optional VC-Turbo engine.

Nissan Altima Years Requiring Extra Caution

No Altima year should automatically be rejected solely because of its model year. A well-maintained car can be better than a neglected example from a supposedly stronger year. Still, several groups deserve additional scrutiny.

Bottom Line: I'd be most cautious with 2007-2009 and 2013-2015 CVT-equipped Altimas, as well as early 2002-2003 cars with questionable 2.5L engine history.

Which Nissan Altima Generation Is Most Reliable?

There isn't one Altima generation that wins in every respect.

The 2002-2006 third generation has the major advantage of using conventional transmissions rather than the CVTs that became the principal weakness of later Altimas. Unfortunately, these cars are now old enough that rust, leaks, worn suspension components and years of previous-owner treatment can overwhelm that advantage.

The 2007-2012 fourth generation has some very durable engines, but early CVT reliability makes it difficult to call the generation the best overall.

The later 2016-2018 fifth-generation cars are better candidates than the early 2013-2015 models, although transmission history still matters.

For someone shopping today, I'd give the overall advantage to a mature sixth-generation Altima with the naturally aspirated 2.5L engine, particularly 2021-2022. These cars are young enough to avoid many age-related problems while retaining Nissan's relatively straightforward four-cylinder engine.

Most Reliable Altima Generation Today: I'd lean toward a later sixth-generation 2.5L Altima, while recognizing that the oldest examples haven't yet accumulated the decades of high-mileage history available for earlier generations.

Which Nissan Altima Engine Is Most Reliable?

Nissan has used several very different engines in the Altima, and two stand out for established durability.

The 3.5L VQ-series V6 has an excellent basic engine reputation. With proper maintenance, these engines can accumulate very high mileage. The disadvantage in later Altimas isn't necessarily the V6 itself; it's that the engine is paired with a CVT.

The naturally aspirated 2.5L four-cylinder is the more economical and much more common choice. Earlier versions had some specific problems, but later examples can also provide long service lives.

The newer 2.0L VC-Turbo delivers much stronger performance than the standard 2.5L, but it uses turbocharging, direct injection and variable-compression technology. That's not the combination I'd select if my primary goal were mechanical simplicity over 150,000 or 200,000 miles.

Most Reliable Altima Engine: The 3.5L V6 has one of the strongest established engine-durability records, while the later naturally aspirated 2.5L is my preferred overall choice when fuel economy, maintenance costs and simplicity are considered together.

Nissan Altima CVT Reliability

The CVT is the component that deserves the most attention when buying a 2007 or newer used Altima.

It's important not to assume that every Altima CVT is identical. Nissan revised its transmissions over the years, and a newer sixth-generation Altima shouldn't automatically be judged as though it contains the same transmission used in a 2007 car.

Nevertheless, earlier Altima CVTs developed a history of overheating, whining, hesitation, juddering and premature failure. That's significant enough that I'd treat transmission history as one of the primary factors determining what an older Altima is worth.

How Long Does a Nissan Altima CVT Last?

There is no reliable mileage at which an Altima CVT automatically fails. Some transmissions provide well over 150,000 miles of service, while others experience serious problems much earlier.

Maintenance, heat, driving conditions and the individual transmission all affect longevity.

At 100,000 miles, I'd want evidence of appropriate transmission maintenance. At 150,000 miles, I'd be particularly interested in whether the CVT is original, whether it has ever been repaired or replaced, and whether it operates normally after becoming completely warm.

A documented replacement CVT can actually be an advantage on a high-mileage Altima if the replacement was performed properly and relatively recently.

Does Nissan Altima CVT Fluid Need to Be Changed?

For a car you intend to keep long term, I would not ignore CVT fluid.

The fluid performs important lubrication, cooling and hydraulic functions, and CVTs require the correct fluid specification.

Service history also tells you something about the previous owner. An Altima with documented CVT maintenance generally gives me more confidence than one whose owner insists the transmission fluid was never touched because it was considered "lifetime" fluid.

Changing fluid won't repair an internally damaged transmission. If the CVT is already whining, slipping, juddering or hesitating, investigate the cause rather than assuming fresh fluid will solve it.

Signs an Altima CVT May Be Failing

• Whining or humming that increases after extended driving
• Juddering or shuddering under acceleration
• Hesitation when pulling away from a stop
• Delayed engagement into Drive or Reverse
• Engine speed rising without normal vehicle acceleration
• Loss of acceleration after highway driving
• Transmission overheating warnings
• Abnormal vibration
• Check-engine or transmission warning lights
• Stored CVT-related diagnostic trouble codes

Buyer Tip: Don't evaluate an Altima CVT solely during a five-minute test drive. Drive the car long enough to fully warm the transmission, including sustained higher-speed driving when practical.

Most Common Nissan Altima Problems

1. CVT Transmission Problems

CVT problems are the single most important reliability concern on many 2007 and newer Altimas.

Symptoms can progress from noise or occasional hesitation to overheating, poor acceleration and complete transmission failure.

Because replacement can cost thousands of dollars, suspicious CVT behavior can be enough reason to walk away from an otherwise attractive older Altima.

2. 2.5L Engine Oil Consumption

Oil consumption deserves attention, particularly on older 2.5L engines.

Check the dipstick before buying and ask whether oil needs to be added between changes. An engine that has repeatedly been operated with insufficient oil can suffer much more serious internal damage.

Some consumption on a high-mileage engine doesn't necessarily make the car unusable, but the owner needs to monitor the oil level consistently.

3. Early 2.5L Pre-Catalytic Converter Concerns

Early third-generation 2.5L Altimas deserve specific attention because deterioration of the pre-catalytic converter could contribute to serious engine problems on affected vehicles.

Combined with the oil-consumption history of some early QR25DE engines, this is one reason I prefer later 2005-2006 cars when considering this generation.

4. Engine and Transmission Mounts

Worn mounts are common enough on aging Altimas to deserve inspection.

Symptoms can include excessive vibration at idle, clunks when shifting between Drive and Reverse, or noticeable engine movement during acceleration.

A failed mount is much less frightening than a failed CVT, but replacing several mounts can still add substantially to the cost of an inexpensive older car.

5. Wheel Bearings

A worn wheel bearing can create humming or growling that increases with vehicle speed.

This is particularly worth mentioning on an Altima because buyers may mistakenly assume any drivetrain-related humming is coming from the CVT.

A professional inspection can usually help distinguish wheel-bearing noise from transmission noise.

6. Suspension and Steering Wear

Struts, shocks, control-arm bushings, links and other suspension components eventually wear as Altimas accumulate mileage.

Listen for clunks over bumps, check for uneven tire wear and make sure the vehicle tracks properly during the test drive.

7. Air-Conditioning Problems

Air-conditioning problems can occur across several generations.

Test the system thoroughly rather than merely confirming that it blows cold for the first minute. Compressor, condenser and other A/C repairs can become expensive.

8. Electrical and Infotainment Problems

Newer Altimas contain substantially more electronics than older generations.

Check the touchscreen, backup camera, Bluetooth, USB connections, power accessories, keyless-entry system and driver-assistance features.

Intermittent warning messages also deserve investigation rather than being dismissed as harmless glitches.

9. Battery and Charging-System Problems

A weak battery can produce starting problems and confusing electronic symptoms, especially on newer Altimas.

If the car has intermittent warning lights or unusually slow starting, test both the battery and charging system.

10. Rust and Corrosion

Rust becomes increasingly important on older Altimas from northern climates.

Inspect the underside rather than judging the car by shiny exterior paint. Brake lines, suspension mounting areas, subframes and structural corrosion deserve particular attention.

Nissan Altima Maintenance and Repair Costs

Routine Altima maintenance is generally affordable, which is one reason the car remains popular as inexpensive transportation. The major financial risk is an expensive transmission or engine repair on a vehicle with relatively modest market value.

These are broad estimates rather than repair quotes. Labor rates, parts choices, model year and location can change the actual cost considerably.

On an older Altima, the important question isn't simply whether a repair is possible. It's whether spending several thousand dollars makes financial sense relative to the value and overall condition of the car.

Maintenance to Expect After 100,000 Miles

A Nissan Altima can have substantial life remaining after 100,000 miles, but this is when maintenance history becomes increasingly important.

• Regular engine oil and filter changes
• CVT fluid service on CVT-equipped models
• Coolant replacement
• Brake-fluid service
• Spark-plug replacement
• Serpentine-belt inspection or replacement
• Battery and charging-system inspection
• Engine and transmission mount inspection
• Wheel-bearing inspection
• Strut, shock and suspension-bushing inspection
• Cooling-system inspection
• Oil-leak and oil-consumption monitoring
• AWD driveline inspection on equipped sixth-generation models
• Brake and tire inspection
• Diagnostic scan for stored engine and transmission codes

For CVT-equipped Altimas, I'd put transmission maintenance and transmission behavior near the top of the high-mileage checklist.

What to Check Before Buying a Used Nissan Altima

Beyond a normal pre-purchase inspection, an Altima deserves several model-specific checks:

• Drive it until the CVT is fully warm: Whining, hesitation, juddering or reduced acceleration may become more noticeable after extended driving.
• Check CVT maintenance history: Ask about fluid service and whether the transmission has ever been repaired or replaced.
• Check older 2.5L engines for oil consumption: Verify the oil level and ask whether oil must be added between changes.
• Listen carefully to drivetrain noise: Wheel bearings can hum as they wear, so determine whether noise is actually coming from the CVT.
• Inspect older cars for corrosion: Rust can be increasingly important on 2002-2012 Altimas from northern climates.

Buyer Tip: Altimas are common enough that there's little reason to gamble on one with suspicious CVT behavior or poor maintenance history. If the transmission doesn't feel right after a thorough test drive, I'd move on.

Nissan Altima Pros and Cons

Pros

• Huge selection on the used-car market
• Often attractively priced compared with some competing sedans
• Good fuel economy from four-cylinder models
• Comfortable ride and roomy interior
• 2.5L four-cylinder can provide substantial mileage
• 3.5L V6 has a strong basic engine-durability reputation
• Older 2002-2006 models avoid CVT concerns
• 150,000 to 200,000 miles is realistic with proper maintenance
• Later sixth-generation 2.5L models offer a good balance of modern features and relative engine simplicity
• AWD is available on newer 2.5L models

Cons

• CVT reliability is the major weakness of many Altima years
• CVT replacement can cost a large percentage of an older Altima's value
• Early 2002-2003 2.5L engines deserve extra scrutiny
• 2007-2009 are early CVT years
• 2013-2015 models have particularly important CVT concerns
• A short test drive may not reveal heat-related transmission problems
• Older examples can suffer from oil consumption, worn mounts, suspension deterioration and rust
• 2.0L VC-Turbo is considerably more mechanically complex than the naturally aspirated 2.5L
• Newest Altimas don't yet have the long-term high-mileage history of older generations

And another con ...

There are other numbers besides price that can significantly affect the final out-the-door cost. A well-negotiated selling price can quickly lose its advantage if the dealer makes up for the concession with a below-market trade-in offer. Also, dealer fees and add-ons can further increase the final cost, making it important to learn which fees you must pay, can negotiate, or should avoid.

To become better informed about these important but often-confusing parts of the deal, be sure to see my articles on trade-ins and dealer fees.

Final Buyer Summary: Is the Nissan Altima Reliable?

The Nissan Altima can be a reliable, comfortable and economical used sedan, but its reputation varies dramatically depending on the generation and transmission.

The 2002-2006 Altima has an advantage that becomes more important with age: it predates widespread Altima CVT use. I'd be cautious with early 2002-2003 2.5L cars, while a well-maintained 2005-2006—particularly with the 3.5L V6—can still be interesting if rust and age haven't taken too great a toll.

The 2007-2012 generation introduced the CVT as a central part of the Altima ownership experience. The engines can be durable, but transmission history becomes critical. I'd generally favor 2010-2012 over the earliest years.

The 2013-2018 Altima continues that story. I'd approach 2013-2015 cars cautiously and generally start my search with 2016-2018 if buying from this generation. Even then, I'd thoroughly evaluate the CVT.

The 2019-2024 sixth generation is newer, safer and more refined. For long-term ownership, the naturally aspirated 2.5L four-cylinder is the powertrain I'd favor. The 2.0L VC-Turbo provides much stronger performance but adds complexity that doesn't help someone whose primary goal is inexpensive high-mileage ownership.

If I were shopping for an Altima primarily for reliability, I'd look for a documented 2021-2022 2.5L among newer cars or a carefully maintained 2016-2018 if I wanted to spend less. A good older 2005-2006 car can also make sense, but age becomes a major factor regardless of its original reliability.

Buyer Takeaway: Don't buy an Altima based on low mileage alone. Look closely at the model year, engine, CVT history and maintenance records, and test the transmission after it is completely warm. The Altima's engines can often provide excellent mileage, but on many used examples, the condition of the CVT is what ultimately determines whether the car is a bargain or an expensive mistake.