|
Gearing.
I know this isn't apples to apples, this is my experience with it: In my Del Sol, the 1.8L DOHC Integra engine is spins at ~4300RPM at 70MPH, and consistently delivers 34MPG on the highway. My mother-in-law had a Civic until recently, a 1.5+auto, that gave around 36MPG @ 70 spinning at something like 2800RPM if I remember correctly.
One would expect the 1.5 + auto to deliver much better than that.
|