2001 Pontiac Aztek GT, 3400 GM 4 speed automatic. Roof rack delete. Drove it on this years vacation about 7000 miles in 2 1/2 weeks. Highway mileage on the interstate at 70 mph stayed at 27-28 mpg. This with 4 people in it and the cargo area loaded with camping and clothing items. Not to bad for an SUV of this size. This is better mpg than the Pontiac Montana minivan of the same year.
For those that are reading this and have one, take the luggage rack off the top. They look better without them and you'll instantly gain better gas mileage. Comes off real easy. Use a screwdriver to pry up the plastic cover clips at the end of each top rail. There will be a slot to put the screwdriver in at the the top. Once off, unloosen the sliding roof rack and slide them all the way back and lift off. Re-install the plastic cover clips. You're welcome
VT247