yukdude

Warmer weather, if not romping on the car, can improve mileage, among other things...

Is your car AWD or a stick though? Because those numbers (18/27) are awfully low for a RWD automatic 250... my 350 does better than those numbers.

Is an Automatic AWD.

I wonder whether you guys experience this before....

I got my IS250 for about half year. Most of the time, It run about 18 miles per gallon in city and 27 miles per gallon on highway.

Recently, I have travel somewhere else with it and I was able to squeeze out 30.5 miles per gallon on the highway (average speed around 75)

I got back home now, and It run more miles per gallon in city these days.

Make any sense?