2018 Chevrolet Impala Engine Problems
- Complaints
- 7about this part
- Share
- 12%of 59 total for the year
- Median mileage
- 29,410miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 7 complaints about the engine of the 2018 Chevrolet Impala, 12% of the 59 complaints for this model year. Where a mileage was given, the median is 29,410 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Stabilitrack and engine light came on at the same time with a message that said, 'engine power is reduced'. This occurred as I was driving on the highway. The vehicle gradually slowed, but I was able to maintain a speed of 55 MPH. I was unable to accelerate quickly.”
NHTSA complaint #11152371, filed 2018-11, 19,820 miles“When driving on the highway at full speed my car suddenly loses power almost causing me to be hit from behind. I then get a Reduced Engine Power warning. Once I get the car off the road, I shut the engine off for a few minutes and then restart it. The car runs fine but the check engine lights remains on. This has happen 4 times this week.”
NHTSA complaint #11458634, filed 2022-03“While driving from work the car did a quick jerk and the STABILITRAK, ABS AND CHECK ENGINE LIGHT ALL CAME ON ALL AT ONCE. As I pulled into my workplace the car lost power to the engine completely while displaying ACTION REQUIRED ON THE LCD SCREEN. The brake and steering wheel became stiff and it was hard to control the vehicle. It took 10 minutes for me to regain power and control over the vehicle that again after leaving work stopped on the highway.”
NHTSA complaint #11477959, filed 2022-08“My vehicle has been serviced several times since I have purchased the vehicle. The car will completely shut off when attempting to turn back on after the auto stop turns it off then I have to place the park hit the start switch and restart the vehicle. Also my AC has stopped several times in the vehicle. The AC compressor was replaced in 2019 and had been serviced twice before that happened because it blows extremely low and have to put it on high just for the air to blow. …”
NHTSA complaint #11324490, filed 2020-05“I went to the store and came out to leave. I attempted to start my car and the radio came on, lights in the car flashed a couple of times and then I tried again. Then it started making a clicking sound.”
NHTSA complaint #11258945, filed 2019-09Related service bulletins
- 11026017Jun 5, 2025This service bulletin provides information on replacing the intake manifold when the engine is replaced after severe internal engine damage.
- 11024485May 15, 2025The service bulletin advises the tech of a normal transmission shift condition and the delay in throttle response when the throttle plate is opened rapidly and advises the…
- 11020254May 7, 2025This service bulletin provides information to dealership personnel for new vehicles with less than 1,000 miles that may not pass California smog inspection or smog inspection in…
- 11019503Apr 18, 2025This warranty administration bulletin provides policy information on vehicles outside of a California Emissions State who move to and register their vehicle in a California…
- 11017263Mar 25, 2025This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to…
- 11016942Mar 4, 2025This bulletin advises the technician to flush the cooling system multiple times if oil has been found in the cooling system and replace the parts that may be contaminated due to…
- 11014230Jan 31, 2025This bulletin advises the dealers to maintain the vehicle stock on hand by doing a full inspection on the vehicles before being sold (prepping) to the customer.
- 11014233Jan 30, 2025This service bulletin provides service information to technicians on guidelines to replace Oil Cooler, Oil Cooler Lines and Oil Tank if the engine was replaced where large…
- 11013069Jan 9, 2025This bulletin provides information on identifying Non-GM Engine Calibrations for Gasoline Engines using the Tech 2 or GDS 2.
- 11011900Nov 22, 2024This diagnostic tip bulletin provides additional information on how to diagnose a possible valve, lifter or camshaft issue.
Engine: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2020 | 1 | 7% |
| 2019 | 2 | 7% |
| 2018 | 7 | 12% |
| 2017 | 21 | 18% |
| 2016 | 21 | 19% |
| 2015 | 19 | 6% |
| 2014 | 56 | 9% |
| 2013 | 30 | 11% |
| 2012 | 40 | 16% |
| 2011 | 125 | 25% |
| 2010 | 88 | 20% |
| 2009 | 179 | 22% |
| 2008 | 134 | 17% |
| 2007 | 77 | 12% |
| 2006 | 59 | 11% |
| 2005 | 30 | 5% |
| 2004 | 71 | 7% |
| 2003 | 88 | 13% |
| 2002 | 75 | 9% |
| 2001 | 68 | 9% |
| 2000 | 71 | 9% |
Other parts of the 2018 Chevrolet Impala
16 complaintsElectrical system
11 complaintsTransmission and drivetrain
11 complaintsBrakes
8 complaintsSteering
7 complaintsAir bags
6 complaintsExterior lighting
4 complaintsFuel system
3 complaintsSeats
3 complaintsVehicle speed control
2 complaintsVisibility (wipers, defrost, mirrors)
2 complaintsWheels
2 complaints
← All problems reported for the 2018 Chevrolet Impala
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology