The 2009 Envoy GMC is a 4-door, 5-passenger sport-utility, available in 6 trims, ranging from the SLE-2 2WD to the Denali 4WD. This was a great vehicle for our needs. The additonal bucks for the SLT was well worth the bells and whisles.Heated seats were a must for my wife with cronic back pain.This was equipped with a 373 rear for the towing capability. I only used this one time in four years for towing and sacraficed a couple mpg for the entire time...not worth the money for the lower rear ratio for me. I have just purchased a 2009 Denali and find the mpg to be better even with the V-8 but with a higher rear ratio. The new vehicle has independent for wheel air suspension and feels quite a bit more substantial to drive...quite like the feel of a larger Tahoe or Silverado pick-up both of which I have had and still do driveUpon introduction, the SLE-2 2WD is equipped with a standard 4.2-liter, I6, 285-horsepower engine that achieves 14-mpg in the city and 20-mpg on the highway. The Denali 4WD is equipped with a standard 5.3-liter, V8, 300-horsepower engine that achieves 14-mpg in the city and 20-mpg on the highway. A 4-speed automatic transmission with overdrive is standard on both trims