10th Sep 2012, 09:42
I agree. The car runs around 2000 RPM at 60 mph. It's always ready to takeoff quickly, but my girlfriend's Deville or our old Buick would be around 1000 RPM at 60mph, and thus could get another 10+ MPG cruising on the highway.
Best case scenario on this car (cruising at 50mph on flat ground in cruise control) is about 24 MPG, vs the Deville, which is FWD and geared for cruising, which can easily hit the mid 30s doing highway driving on flat ground.
On the upside, this car has been extremely reliable for me. Only problems were with brakes that were installed incorrectly by the dealership -- twice (needless to say, I don't go there any more).
4th Mar 2012, 09:47
I agree with the above poster. My 06 STS V8 1 SF now has 72k, about 20k from long cross country trips. I've learned to keep it at 75MPH @2200 RPM.. for 24 MPG. Tires and oil are the only things. Mine is a daily driver, so it sits outside.