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  • If you’re looking for a dependable vehicle with more passenger and cargo space, consider a Chevrolet Impala.
  • The Chevrolet Impala enjoys good reliability scores from RepairPal, J.D. Power, and Kelley Blue Book.
  • The Chevrolet Impala can run up to 150,000 miles if you take good care of it.
  • Some of the most common complaints about the Chevrolet Impala include transmission failure, power lock problems, heater issues, and excessive oil consumption.

If you’re looking for a dependable vehicle with more passenger and cargo space, you might want to consider a Chevrolet Impala. Aside from its large cabin, the Impala also has a muscular engine and easy-to-use infotainment system, making it an excellent choice for a daily driver.

Before buying an Impala, it’ll be helpful to read up on its reliability ratings to find out the common issues other people have encountered with this vehicle.

Is the Chevrolet Impala Reliable?

The Chevrolet Impala enjoys good reliability scores. RepairPal gave the model a reliability score of 4.0 out of 5.0, ranking it 5th out of 12 cars in its segment. The 2020 model was given a 3.5 out of 5 by J.D. Power. Meanwhile, older models like the 2005 Impala earned a rating of 4.4 from Kelley Blue Book based on consumer reviews.

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As long as you follow your regular maintenance schedule, your Impala can easily run up to 150,000 miles without needing any major repairs. Regular servicing will also keep your Impala in tip-top shape, saving you time and money on repairs.

Chevrolet Impala Common Problems

Regardless of how well you take care of your vehicle, issues may crop up as it puts on mileage. Here are some of the most common Impala problems per model year:

Transmission Failure

Transmission problems have been reported in some units of the 2011 Chevy Impala. Owners report hearing a loud noise from the transmission before it failed. They also noticed stuttering and jerking as their vehicles slowed down.

2011 Chevrolet Impala LTZ Chevrolet Pressroom
Transmission problems have been reported in some units of the 2011 Chevy Impala. Image source: Chevrolet Pressroom.

Similar problems have also been reported in some 2005 and 2006 models. Steer clear of units that have slipping transmissions and have difficulty shifting gears.

An Impala with a serious transmission problem may need to have its entire transmission replaced or rebuilt. Repair work for this type of problem may cost as much as $2,970.

Power Lock Malfunction

Power lock problems have been reported in some units of the 2008 Chevy Impala. Their locks may work intermittently or fail to operate completely. Replacing faulty components like the lock assembly, actuator, or sensor appeared to solve the issue in most affected vehicles.

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Heater Issues

Some 2007 Chevrolet Impalas have had problems with the operation of their heater. One owner said his heater suddenly stopped working because of clogged lines. Mechanics speculate that low-quality antifreeze may have caused the issue.

2006 2007 Chevrolet Impala Wikimedia
Some 2007 Chevrolet Impalas have had problems with the operation of their heater. Image source: Wikimedia.

Several owners also noticed cold air blowing from the heater vents while their vehicles were on idle. There are many possible causes for heater malfunction. Some owners had to replace their faulty thermostat, while others had to have their head gasket leak fixed.

Some owners also noticed a weird smell coming from their A/C and/or heater vents. One owner attempted to solve the issue by having his Impala detailed, but it didn’t solve the issue.

Excessive Oil Consumption

Some 2006 Impala owners have also had problems with their engine’s excessive oil consumption. Drivers report not noticing any visible oil leaks, which suggests that the engine was burning it.

Replacing the oil pan is a common fix for this issue.

Passlock Issues

Passlock problems have been reported in some units of the 2002 Impala. Owners were upset about getting locked out of their vehicle, their check engine and security lights going on and off, and experiencing difficulty starting their vehicle.

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Passlock system issues can be complicated, so it’s best to have a professional diagnose the problem. Replacing the body control module or bypassing the ignition sensor appeared to solve the issue on most affected vehicles. Repairs for this type of issue can cost as much as $520.

Intake Manifold Gasket Failure

Some 2002 Chevrolet Impalas have suffered from coolant leaks due to a bad intake manifold gasket. This causes frequent overheating, which may result in more serious engine problems. This problem may recur, and some owners had to replace their intake manifold gasket more than once. You may spend as much as $820 to fix this type of issue.

As long as you’re aware of the potential issues you may encounter with an Impala, buying this vehicle should come with little risk. Do your research and make sure to clear everything with the seller or dealership before finalizing your purchase.

About The Authors
Written By Automotive and Tech Writers

The Research Team is composed of experienced automotive and tech writers working with (ASE)-certified automobile technicians and automotive journalists to bring up-to-date, helpful information to car owners in the US. Guided by's thorough editorial process, our team strives to produce guides and resources DIYers and casual car owners can trust.

Reviewed By Automotive Features Reviewer at

Lisa Conant grew up in Canada around a solid contingency of gear heads and DIY motor enthusiasts. She is an eclectic writer with a varied repertoire in the automotive industry, including research pieces with a focus on daily drivers and recreational vehicles. Lisa has written for Car Bibles and The Drive.

Any information provided on this Website is for informational purposes only and is not intended to replace consultation with a professional mechanic. The accuracy and timeliness of the information may change from the time of publication.

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George Moy

How about the 1977 to 1985 full size caprice classic and lmpala with the top of the dashboard starting to develop horizontal cracks and the car still runs it is a design problem,because most cars only have that damage when the car isn’t being care for.

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