MyCarTSB

2008 Chevrolet Impala Fuel System Other Power Train Problems

1 owner-reported fuel system other power train complaint from NHTSA data

1
Complaints
Sep 2008Sep 2008
Date Range

Data sourced from NHTSA public database. For informational purposes only. Always consult a qualified mechanic.

Owner Complaints (1)

mediumFUEL SYSTEM, OTHER,POWER TRAIN
Filed: Sep 2008

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. *TR

NHTSA #: 10242316

Other 2008 Chevrolet Impala Issues