Chevrolet Avalanche 2005 Automatic Gasoline mileage: 300 KM or more The SUV is for sale: For sale, Avalanche 2005, mileage 700. Gearbox and engine have been changed. The new engine has a mileage of 300,000. It has been painted royal black for 7000. It has an electronic MagnaFlow muffler with a remote. Full options: sunroof, heated seats, new interior, and nothing is wrong with it. It has an interior screen. 6 months ago, I paid over 20,000 for the gearbox, engine, and modifications.