2013 Automatic Gasoline mileage: 300 KM or more 4WD GMC Sierra, double gear, six speeds. The car has modification and lowering number 2. The car has a good body and mileage around 400. Borla exhaust with "Y" pipe and "off-off" system, Profender shocks, "King" "Y" pipe, and a 40,000 BTU transmission cooler.