2020 Chevrolet Impala Problems
- Complaints
- 15filed with NHTSA
- Median mileage
- 54,000miles, 3 complaints with mileage
- Recalls
- 0campaigns on record
- Trend
- RisingComplaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.
- NHTSA crash rating
- 5 / 5stars overall
- EPA fuel economy
- 22 mpgcombined, 3.6L 6-cyl FWD · 19 city / 28 hwy
Sources: NHTSA records for the 2020 Chevrolet Impala (complaints, recalls, investigations), NHTSA crash tests, EPA fuel economy. Report an error
NHTSA recorded 15 consumer complaints for the 2020 Chevrolet Impala. The part named most often is other or unknown, with 7 complaints (47% of the total), followed by electrical system (3) and steering (3). 3 of the complaints include a mileage, and 33% of those were filed for vehicles with under 50,000 miles; the median is 54,000 miles. Of all complaints, 3 involved a crash, 1 an injury, according to the filers. NHTSA lists 0 recall campaigns and 554 technical service bulletins for this model year. Other or unknown complaints overlap with 88 technical service bulletins filed under the same part. Electrical system complaints overlap with 106 technical service bulletins filed under the same part.
This model year has fewer than 25 complaints on record, so the numbers below can change a lot with a few new reports.
Which parts are reported most
Complaints can name more than one part, so the counts add up to more than the total. Select a part to see its complaints, recalls and bulletins.
- Other or unknown7 47%
- Electrical system3 20%
- Steering3 20%
- Air bags2 13%
- Fuel system2 13%
- Engine1 6.7%
- Exterior lighting1 6.7%
- Lane departure1 6.7%
- Seat belts1 6.7%
Also reported: Seats (1), Body and structure (1), Visibility (wipers, defrost, mirrors) (1).
Example complaints
Other or unknown: “I was driving down the highway in anchorage ak I heard a loud bang like a gunshot , when the vehicle was inspected I was told basically Evap, fuel system , fans , electrical , Cadillac converter exploded was the loud bang ! Serious issues have caused the vehicle to be inoperable !”
NHTSA complaint #11615402, filed 2024-09Electrical system: “The air conditioner tube was off inside the vehicle and caused massive leaking in the carpets. Causing mold to grow excessively under the floor mats, in the carpets, under the seats, etc. Which as a result led to electrical issues. It’s being looked into by a senior member at GM for months now, nothing is being done. Radley Chevy in Fredricksburg Virginia hasn’t done anything for us either. My family is now having respiratory issues due to the mold issue.”
NHTSA complaint #11436029, filed 2021-10Steering: “2020 Chevrolet Impala Premier purchased July, 2015, mileage: + or - 12 miles I started having hard steering and made several trips to the dealer while under warranty and the dealer could not gen an OBD reading and no on dash reading. Right after the warranty was up and at 5,322 miles they were able to get an OBD reading. …”
NHTSA complaint #11679731, filed 2025-08Air bags: “I was in a car accident on June 20, 2023. I was stopped in traffic and was hit in the rear and pushed into the vehicle in front of me. The air bags detonated but did not deploy. The steering wheel and both front seat side air bags had some coming but the airbag did not deploy.”
NHTSA complaint #11528914, filed 2023-06Mileage when problems were reported
33% of the 3 complaints with a mileage were filed for vehicles with under 50,000 miles; the middle half falls between 40,433 and 85,000 miles.
Complaints by year filed
Trend: rising. Complaints filed in the last 3 full calendar years are at least 25% higher than in the 3 years before.
Crash test ratings
NHTSA's 5-Star Safety Ratings for the 2020 Chevrolet Impala. Frontal results are shown driver / passenger; rollover shows the star rating and NHTSA's estimated risk of rolling over in a single-vehicle crash.
| Version | Overall | Frontal | Side | Side pole | Rollover |
|---|---|---|---|---|---|
| Impala · sedan FWD | ★★★★★ | 5 / 4 | 5 | 5 | 4 · 12.1% risk |
Driver aids listed by NHTSA for the 2020 model year: forward collision warning optional, lane departure warning optional, automatic emergency braking not available.
Neighbouring years: 2019: same overall rating. A redesign between years can change both the car and the test.
Source: NHTSA New Car Assessment Program (5-Star Safety Ratings), nhtsa.gov/ratings.
Fuel economy and running cost
EPA ratings for each 2020 Chevrolet Impala version. Annual fuel cost is the EPA's estimate at its current fuel prices for 15,000 miles a year (55% city driving).
| Version | Engine | Transmission | City | Hwy | Comb. | Fuel / yr |
|---|---|---|---|---|---|---|
| Impala FWD | 3.6L 6-cyl | 6-speed automatic | 19 | 28 | 22 | $3,050 |
| Impala FWD | 3.6L 6-cyl · flex-fuel | 6-speed automatic | 18 | 28 | 22 | $3,050 |
Source: U.S. EPA and Department of Energy, fueleconomy.gov. Ratings are for comparing vehicles; real-world mileage varies with driving and conditions.
Recalls and investigations
NHTSA lists no recall campaigns for the 2020 Chevrolet Impala in the data used here. A recall can apply to some vehicles of a model year and not others, so check a specific vehicle by VIN at nhtsa.gov/recalls.
Technical service bulletins
TSBs are manufacturer notes to dealers about known repair procedures. They are not recalls and do not by themselves mean a vehicle has a fault. 554 on record; the latest 10 are shown.
- 11037555Sep 26, 2026Other or unknown. This PI provides Diagnostics tips on how the LIN bus works and how to diagnosis it.
- 11037253Sep 4, 2026Other or unknown. This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- 11035340Jul 21, 2026Other or unknown. PI to help diagnose A/C concern
- 11030974Apr 1, 2026Other or unknown. This preliminary information communicates information about how to determine if a wheel and tires size change is available.
- 11030092Mar 9, 2026Other or unknown. This Preliminary information communicates the steps on how to save a GDS2 Session Log and upload to a Technical Assistance Case in CX Connect.
- 11030091Mar 9, 2026Other or unknown. This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
- 11029950Mar 2, 2026Other or unknown. This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC'ss
- 11027697Jan 16, 2026Other or unknown. This Preliminary information communicates to the field on how to diagnosis a GPS issue with the Telematic module with no DTC's
- 11027701Jan 14, 2026Other or unknown. This PI advised dealer technicians of possible causes of diesel fuel contamination in gasoline powered vehicles and advises of warranty direction.
- 11027601Jan 8, 2026Other or unknown. This preliminary information advises a dealer on how to email GDS2 session logs into Technical Assistance.
Other model years of the Chevrolet Impala
| Year | Complaints | Median mi | Recalls | Crash ★ | MPG | Score (50 = typical) | Trend |
|---|---|---|---|---|---|---|---|
| 2020 | 15 | 54,000 | 0 | 5 | 22 | — | Rising |
| 2019 | 28 | 36,338 | 1 | 5 | 22 | 0 · Fewer | Falling |
| 2018 | 59 | 40,400 | 1 | 5 | 22 | 0 · Fewer | Falling |
| 2017 | 117 | 45,500 | 0 | 5 | 22 | 0 · Fewer | Falling |
| 2016 | 111 | 55,461 | 0 | 4–5 | 22 | 0 · Fewer | Falling |
| 2015 | 300 | 59,523 | 3 | 4–5 | 22 | 46 · Typical | Falling |
| 2014 | 638 | 60,000 | 12 | 4–5 | 22 | 93 · More | Falling |
| 2013 | 272 | 54,000 | 1 | 4 | 22 | 29 · Fewer | Falling |
| 2012 | 258 | 48,500 | 3 | 4 | 22 | 59 · Typical | Falling |
| 2011 | 505 | 60,400 | 2 | — | 23 | 76 · More | Falling |
| 2010 | 442 | 72,558 | 4 | — | 22 | 54 · Typical | Falling |
| 2009 | 824 | 75,468 | 5 | — | 22 | 98 · More | Falling |
| 2008 | 810 | 70,000 | 2 | — | 22 | 72 · More | Falling |
| 2007 | 627 | 60,000 | 2 | — | 22 | Not compared (before 2008) | Falling |
| 2006 | 524 | 74,900 | 1 | — | 20 | Not compared (before 2008) | Falling |
| 2005 | 609 | 77,000 | 1 | — | 21 | Not compared (before 2008) | Falling |
| 2004 | 1,074 | 70,000 | 4 | — | 21 | Not compared (before 2008) | Falling |
| 2003 | 695 | 82,000 | 5 | — | 20 | Not compared (before 2008) | Falling |
| 2002 | 795 | 78,000 | 4 | — | 20 | Not compared (before 2008) | Falling |
| 2001 | 742 | 80,000 | 7 | — | 21 | Not compared (before 2008) | Falling |
| 2000 | 818 | 86,000 | 7 | — | 21 | Not compared (before 2008) | Falling |
| 1996 | 88 | 40,000 | 0 | — | — | Not compared (before 2008) | Stable |
| 1995 | 44 | 135,500 | 0 | — | — | Not compared (before 2008) | Stable |
| 1994 | 15 | 45,000 | 0 | — | — | — | Stable |
All Chevrolet Impala model years · Best and worst years by complaints
Frequently asked questions
How many NHTSA complaints does the 2020 Chevrolet Impala have?
NHTSA recorded 15 consumer complaints for the 2020 Chevrolet Impala as of Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
What part of the 2020 Chevrolet Impala is reported most often?
Other or unknown is named most often, in 7 complaints (47% of the total), followed by electrical system with 3.
Has the 2020 Chevrolet Impala been recalled?
NHTSA lists no recall campaigns for this model year in the data used here. To check a specific vehicle, enter its VIN at nhtsa.gov/recalls.
How did the 2020 Chevrolet Impala do in NHTSA crash tests?
NHTSA's 5-Star Safety Ratings give the 2020 Chevrolet Impala 5 out of 5 stars overall. Ratings from different model years are only comparable when the vehicle was not redesigned in between.
What gas mileage does the 2020 Chevrolet Impala get?
The EPA rates the 2020 Chevrolet Impala (Impala, 3.6L 6-cyl) at 22 mpg combined, 19 city and 28 highway, with an estimated annual fuel cost of $3,050 at 15,000 miles a year. Other engine and drive versions are rated differently.
At what mileage are problems with the 2020 Chevrolet Impala reported?
Among the 3 complaints that include a mileage, the median is 54,000 miles and the middle half falls between 40,433 and 85,000 miles; 33% were filed for vehicles with under 50,000 miles.
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate. Crash ratings are from NHTSA’s New Car Assessment Program. Fuel economy is from the EPA and DOE (fueleconomy.gov).
Complaint counts come from NHTSA’s public complaint database; we count each complaint once. The source records for this vehicle are on nhtsa.gov. Scores and trends are our own summaries of that data, described in the methodology. This page is not legal, safety or repair advice: for a specific vehicle, check its VIN at nhtsa.gov/recalls and ask a qualified mechanic. See an error? Tell us.