Why does my Oldsmobile cutlass sierra s with the 3.3 L burn alot of gas? And we drive it like a granny on the highway.
You didn't state the year, copy and paste the below for what the fuel economy should be for your year car, if its low you may need a good tune up, including replacing all the air filters, an oil and transmission fluid change. Tires play a key roll in economy and if your are driving city or highway miles... http://www.fueleconomy.gov/feg/bymodel/1993_Oldsmobile_Cutlass_Ciera.shtml
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