2008 Chevrolet Impala Fuel system Problems
- Complaints
- 19about this part
- Share
- 2%of 810 total for the year
- Median mileage
- 92,000miles
- Trend
- FallingComplaints filed in the last 3 full calendar years are at least 25% lower than in the 3 years before.
NHTSA recorded 19 complaints about the fuel system of the 2008 Chevrolet Impala, 2% of the 810 complaints for this model year. Where a mileage was given, the median is 92,000 miles. 1 of these say a crash was involved, according to the filers.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“Reduced engine power light comes on intermintently while driving had the throttle body and accelerator pedal replcaed twice after I bought the car with 75000 miles on it. Still the reduced engine power light comes on. Just yesterday I was unable to start my car. Throttle problems light came on in window”
NHTSA complaint #11233963, filed 2019-07, 130,000 miles“While driving, fast or slow, my car will slow down abruptly and a engine power is reduced warning comes up on the lcd dash. This has also happened while I've been standing idle at traffic lights. I am afraid that one day my car will stop completely while I'm on the highway, resulting in a crash of some sort.”
NHTSA complaint #10509588, filed 2013-04, 92,000 miles“As I was driving, around 30 MPH, the warning displays reduced engine speed and the car will barely reach 45 MPH. Twice in 5 years, we have had to replace the accelerator pedal position sensor.”
NHTSA complaint #11229407, filed 2019-07, 110,000 miles“Takata recall I have a 2008 chevy Impala I'm having problems with engine reduce car is jerking and slowing down I had the patio replaced and one sensor and now I am having a throttlebody put on hopefully hopefully this stops the problem but this issue has been going on for a very long time other people I have communicated with that has the same car as me are having the same problems unfortunately I look these problems up in our cars for the 2008 chevy and was not on the recall list which I think that it should”
NHTSA complaint #11105236, filed 2018-07, 40 miles“Gm advertises that mileage for average highway driving is 28 mpg. The car does not meet or even come close to this standard. I have tested mileage with 100% highway driving and the max mpg is 23. With some minimal off highway driving (to and from highway) the mpg averages 21 to 22. Off highway mpg averages 19. My investigations have found that GM has changed the final drive ratio. At 70 MPH the engine RPM is 2,300. That is 300 RPM more that previous model years.”
NHTSA complaint #10242316, filed 2008-09, 10,000 milesRelated service bulletins
- 11007095Aug 7, 2024This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles…
- 11004727Jun 29, 2024This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
- 11004761Jun 28, 2024This service bulletin advises of a new fuel injection cleaner kit used for decarbonizing the intake valves to correct conditions of rough idle, Crank no start, extended crank or…
- 10250505Feb 7, 2024This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy.
- 10241417Aug 1, 2023This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
- 10222766Sep 16, 2022This bulletin provides information on the TOP TIER Detergent Gasoline Licensed Brands and the TOP TIER Diesel Fuel Licensed Brands that are recommended for use in all GM vehicles…
- 10222765Sep 14, 2022This service bulletin provides the technician with additional information on fuels, fuel additives and fuel management.
- 10222739Sep 13, 2022This service bulletin provides information for maintenance cleaning of the fuel injectors and gasoline detergent additive.
- 10218873Aug 10, 2022This service bulletin provides information on the cold start control system in DI engines to reduce cold start emissions and improve fuel economy.
- 10213816May 26, 2022This Preliminary information communicates provides information to the technician on the use of R-99 or R-95 Renewable diesel fuel.
Fuel system: other model years
| Year | Complaints | Share of year |
|---|---|---|
| 2020 | 2 | 13% |
| 2019 | 2 | 7% |
| 2018 | 3 | 5% |
| 2017 | 4 | 3% |
| 2016 | 5 | 5% |
| 2015 | 10 | 3% |
| 2014 | 13 | 2% |
| 2013 | 10 | 4% |
| 2012 | 18 | 7% |
| 2011 | 17 | 3% |
| 2010 | 17 | 4% |
| 2009 | 19 | 2% |
| 2008 | 19 | 2% |
| 2007 | 23 | 4% |
| 2006 | 20 | 4% |
| 2005 | 42 | 7% |
| 2004 | 37 | 3% |
| 2003 | 26 | 4% |
| 2002 | 34 | 4% |
| 2001 | 39 | 5% |
| 2000 | 76 | 9% |
| 1996 | 9 | 10% |
| 1995 | 5 | 11% |
| 1994 | 4 | 27% |
Other parts of the 2008 Chevrolet Impala
221 complaintsEngine
134 complaintsSuspension
117 complaintsSteering
94 complaintsVehicle speed control
92 complaintsTransmission and drivetrain
91 complaintsOther or unknown
62 complaintsElectronic stability control
58 complaintsAir bags
50 complaintsLatches, locks and linkages
48 complaintsBrakes
40 complaintsTires
36 complaints
← All problems reported for the 2008 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