NHTSA lists 1 safety recall and 59 owner complaints for the 2018 Chevrolet Impala. Most complaints involve power train (11) and electrical system (11). The EPA rates it 22–25 mpg combined, and NHTSA gives it 5 stars overall.
General Motors LLC (GM) is recalling certain 2018-2019 Chevrolet Equinox, Impala, Cruze, Volt and Bolt EV vehicles, GMC Terrain vehicles, Buick Lacrosse and Regal vehicles, Cadillac XTS and XTS Professional vehicles and 2018 Chevrolet Malibu vehicles. The rear brake caliper pistons may have an insufficient coating causing gas pockets to form, potentially reducing rear brake performance.
Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.
Complaints for each Impala model year we’ve synced.
| Model year | NHTSA complaints |
|---|---|
| 2000 | 829 |
| 2001 | 747 |
| 2002 | 808 |
| 2003 | 722 |
| 2004 | 1,073 |
| 2005 | 608 |
| 2006 | 544 |
| 2007 | 627 |
| 2008 | 810 |
| 2009 | 824 |
| 2010 | 442 |
| 2011 | 505 |
| 2012 | 258 |
| 2013 | 272 |
| 2014 | 638 |
| 2015 | 301 |
| 2016 | 890 |
| 2017 | 117 |
| 2018 | 59 |
| 2019 | 28 |
| 2020 | 15 |
“The transmission failed, shifting is no longer smooth. It hesitates and shakes the entire car, and the car slows down to almost a crawl uphill. I understand this is an issue with Chevrolet Impalas. So now I have an $8200 bill for a problem I was never told about, and that GM knew that it existed. So, yes, the issue has been identified, reproduced and confirmed by the dealer. The warning light came on when the issue happened, so it was already too late. The issue began with just over 65,000 miles. So I have a 2018 Impala in almost perfect condition in need of an $8200 before taxes, transmission replacement. I would like some help from the NHTSA, like requiring GM to pay for the repairs. Thank You very much.”
“Tire pressure sensor system receiver (part of keyless entry system) will not collect info from individual tire pressure sensors in tires. Failure of this safety system would not provide and advance warning of low tire pressure.”
“I was driving and parked the car at the store. After checking out I went to the car got ready to leave and started backing out and the car would not turn to the left at all. I took it to the shop and was told they do not see anything wrong with my car but a steering message is coming up.”
Towing, payload and dimensions aren’t in the EPA or NHTSA data, so we don’t list them.
| Version | City | Hwy | Comb. | Fuel / yr | CO₂ g/mi |
|---|---|---|---|---|---|
| Impala Auto (S6), 4 cyl, 2.5 L, SIDI · Front-Wheel Drive | 22 | 30 | 25 | $2,500 | 360 |
| Impala Auto (S6), 6 cyl, 3.6 L, SIDI; FFV · Front-Wheel Drive | 18 | 28 | 22 | $2,850 | 409 |
| Impala Auto (S6), 6 cyl, 3.6 L, SIDI · Front-Wheel Drive | 19 | 28 | 22 | $2,850 | 404 |
| Item | Miles | Time | Note |
|---|---|---|---|
| Engine oil & filter | 5,000–10,000 mi | 6–12 months | Follow the oil-life monitor if fitted |
| Tire rotation | 5,000–7,500 mi | Every oil change | Check pressure monthly |
| Engine air filter | 15,000–30,000 mi | 1–2 years | Sooner in dusty areas |
| Cabin air filter | 15,000–25,000 mi | 1–2 years | |
| Brake fluid | — | 2–3 years | Absorbs moisture over time |
| Coolant | 60,000–100,000 mi | 5–10 years | Long-life coolants last longer |
| Spark plugs | 60,000–100,000 mi | — | Iridium/platinum plugs at the long end |
| 12V battery | — | 3–5 years | Heat shortens battery life |
1 safety recall as of Nov 10, 2026, according to NHTSA. Recall repairs are free at a dealer. Check your VIN to see whether your car is included and whether the repair was done.
Owners filed 59 complaints with NHTSA. The most-cited components are power train (11), electrical system (11), steering (7). Complaints are unverified owner reports and aren't adjusted for how many cars were sold.
The EPA rates the 2018 Chevrolet Impala at 22–25 mpg combined, depending on engine and drivetrain (3 versions rated).
NHTSA's New Car Assessment Program gives the 2018 Chevrolet Impala 5 out of 5 stars overall.