I have a new 2006 La Crosse with 2500 miles. The gas mileage is awful. 24 and 1/2 miles per gallon on a freeway and 14 miles per gallon in city driving - no traffic jams. My previous car was a 1997 Olds 88. It got 29 miles per gallon on the freeway - often more. The Lacrosse seems to run well. However, the tachometer goes up to 3,000 RPMs in city driving with a light touch on the gas pedal and then drops back down to 1,000 RPM s. Is this normal?
With the very low gas mileage,it seems to me that something must be wrong. Any suggestions on what I should as a dealer's service department to check out.
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