2018 Chevrolet Impala Vehicle speed control Problems
- Complaints
- 2about this part
- Share
- 3%of 59 total for the year
- Median mileage
- 49,100miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 2 complaints about the vehicle speed control of the 2018 Chevrolet Impala, 3% of the 59 complaints for this model year. Where a mileage was given, the median is 49,100 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.
“Adaptive cruise control (acc) issues scenario 1 first day I was traveling at approximately 70 MPH. As I would in any of my other 100 + cars I've owned, I held the cruise control 'set' button expecting the speed to gradually decrease. The Impala much to my surprise, with traffic behind me, went from 70 MPH to approximately 20 MPH within 7 secs. The traffic behind me was swerving to avoid crashing into me. It clearly states on page 182 of the owner's manual 'reducing speed while acc is at a set speed. 'press and hold setuntil the desired lower speed is reached, then release it. …”
NHTSA complaint #11152232, filed 2018-11, 200 miles“The contact owns a 2018 Chevrolet Impala. The contact stated while driving 45 MPH, the accelerator pedal was depressed but was inoperable. The contact stated that the vehicle failed to accelerate as intended. There was no warning light illuminated. The vehicle was taken to an independent mechanic and a dealer and was diagnosed with transmission failure. The vehicle was not repaired. The manufacturer was notified of the failure. The failure mileage was 98,000.”
NHTSA complaint #11611424, filed 2024-08, 98,000 milesRelated service bulletins
- 11014171Jan 31, 2025This service bulletin provides information on proper use of floor mats.
Vehicle speed control: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2018 | 2 | 3% |
| 2017 | 1 | 1% |
| 2016 | 4 | 4% |
| 2015 | 8 | 3% |
| 2014 | 31 | 5% |
| 2013 | 20 | 7% |
| 2012 | 15 | 6% |
| 2011 | 69 | 14% |
| 2010 | 47 | 11% |
| 2009 | 130 | 16% |
| 2008 | 92 | 11% |
| 2007 | 41 | 7% |
| 2006 | 41 | 8% |
| 2005 | 24 | 4% |
| 2004 | 41 | 4% |
| 2003 | 23 | 3% |
| 2002 | 15 | 2% |
| 2001 | 10 | 1% |
| 2000 | 29 | 4% |
| 1996 | 2 | 2% |
| 1995 | 1 | 2% |
| 1994 | 3 | 20% |
Other parts of the 2018 Chevrolet Impala
16 complaintsElectrical system
11 complaintsTransmission and drivetrain
11 complaintsBrakes
8 complaintsEngine
7 complaintsSteering
7 complaintsAir bags
6 complaintsExterior lighting
4 complaintsFuel system
3 complaintsSeats
3 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 31, 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