Most common 2018 Chevrolet Impala problems
Share of the 59 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
Chevrolet Impala complaints by model year
Best Impala years: 2020, 2019, 2018. Years to avoid: 2008, 2009, 2004. Compare all years →
2018 Chevrolet Impala recalls (1)
Service brakes, hydraulic › Foundation components › Disc › Caliper
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.
Remedy: GM will notify owners, and dealers will bleed the vehicle's brake system, free of charge. The recall began October 11, 2018.
What 2018 Chevrolet Impala owners say
Electrical system
As I was driving home from my place of employment which is exactly 30 miles from where I live my Steering Assist went out and it was very hard to steer and to even stay in the lane which I was driving I managed to get the car home and did an under carriage inspection and there was no damage still kind of shaken from the power steering going out I checked for the power steering pump and the power steering fluid reserve but found out through my owner's manual that I have electronic power steering I took the car by my local Chevrolet dealer and was told it was nothing they could do because they knew nothing about how to repair such a problem the only warning lamp that I received was a message that said power steering service drive with care
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.
Transmission & drivetrain
The contact owns a 2018 Chevrolet Malibu. The contact stated that while driving at various speeds, the vehicle hesitated or jerked while depressing the accelerator pedal, with an abnormal humming sound coming from the vehicle. The contact stated that the check engine warning light was illuminated. Additionally, the contact stated that while in reverse(R), the vehicle failed to accelerate while depressing the accelerator pedal. The vehicle was taken to an independent mechanic where the vehicle was diagnosed with transmission failure. The manufacturer was notified of the failure and referred the contact to the NHTSA Hotline to report the failure. The vehicle remained with the independent mechanic unrepaired. The failure mileage was approximately 128,000.
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.
Brakes
The contact owns a 2018 Chevrolet Impala. The contact stated while reversing slowly, the brake pedal was depressed; however, the vehicle failed to respond as needed and continued rolling backwards. The contact stated that excessive force was needed to depress the brake pedal to stop the vehicle. The contact stopped and shifted to drive(D), and with the brake pedal depressed, the vehicle started to roll forward. The contact was not able to stop the vehicle. The contact steered the vehicle to the right to avoid crashing into the building. The contact stated that the vehicle jumped a curb and crashed into a signpost, preventing the vehicle from driving into the restaurant. The contact stated that the vehicle was driving very slowly during the failure. The contact stated there was no warning light illuminated. …
In February 2019 I purchased a 2018 Chevy Impala premier, upon driving the car I noticed that the brakes were not working like my 2018 Chevy camaro but I chucked it up to the car being heavier and paid it no attention. For months I have been thinking that maybe I just need to get used to the brakes on my new car and that it was nothing. While I drive at normal speeds (40 - 45 MPH) my car slid an extra 5- 10 ft more then it is supposed to every time. Yesterday while braking my brakes just totally did not respond causing me to hit the back of another driver. I was driving about 30 MPH literally just turning out of a shopping plaza when the accident happened. I started to press the brakes about 50 meters ahead and my car did not budge nor did it begin to stop it continued to drive at the same speed until I prompted to turn and braced for the collision. …
2018 Chevrolet Impala engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 2.5L 4-cyl | 6-speed automatic | FWD | 22 / 30 / 25 |
| 3.6L 6-cyl | 6-speed automatic | FWD | 18 / 28 / 22 |
EPA ratings. Class: Large car.
Frequently asked questions
Is the 2018 Chevrolet Impala a good car?
Based on 59 owner complaints filed with NHTSA, the 2018 Impala rates better than average: 84% fewer complaints than a typical year of the Impala at the same age. It is one of the best Impala years by this measure. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2018 Chevrolet Impala?
The electrical system — 11 complaints, 19% of all complaints for this model year. Next are the transmission & drivetrain (11) and brakes (8).
How many recalls does the 2018 Chevrolet Impala have?
There is 1 recall for the 2018 Chevrolet Impala, the most recent from August 30, 2018 (caliper). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the Chevrolet Impala?
The best years by complaints, compared at the same age, are 2020, 2019 and 2018. Years to avoid or approach with caution: 2008, 2009 and 2004. See the full Chevrolet Impala years comparison.
At what mileage do 2018 Chevrolet Impala problems happen?
The median mileage reported in complaints is about 40,000 miles; 61% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.