[Risk3233]

What kind of gas mileage are you IS owners experiencing? Miles per gallon?

 

[Risk3233]

Is there any truth that @ the 5000 mile mark on the odo, that the engine settles and gas mileage improves?

A guy at a speed shop stated at that point most of the engine parts start to "match" and run smoother.

 

[Risk3233]

Initial calculations are an avg. mpg of 17.71 for our first fill-up. The car has 2200 miles on it. A mix of stop-n-go and highway driving.

It should be noted that the car's commute averages an elevation change of 7,000 ft.