Fuel economy has diminished.
#1
Fuel economy has diminished.
I have been driving my 2009 HHR for 9800 miles. Throughout this I have kept the Average Fuel Economy reading up on the Driver Information Center. I reset it every time I fill up. I have always had about 22 mpg in city driving. In the last few months it has dropped to 17 mpg with no change in my driving habits. I took the car to the dealer and they said they could not find anything wrong with the fuel trims or computer codes , yet I am sure the car has dropped in fuel economy. Any ideas as to why this is happening would be appreciated.
#4
MPG is mostly dependent on driving techniques and where you ae driving. Highway driving I routinely get over 32 mpg, but around town maybe 25 mpg. I find that the DIC reads low on average MPG, so I do manual calculations. I have over 69K miles on my car and have never seen mileage below 22 mpg in the 4+ years of ownership
#9
hhr's don't have a fuel filter. the only fuel filter it uses is sock type filter on the end of the fuel pump in the tank. The air filter is a good idea though.
Last edited by Lucky; 10-25-2010 at 08:45 PM. Reason: forgot to add line