2006 Automatic Gasoline mileage: 1 KM Peace, mercy, and blessings of God be upon you. I have a 2006 GMC Suburban. The car is good and its engines are good. The mileage is stuck at 580,000. The engine is a 5.3 Vortec, its fuel consumption is good, it's reliable, and well-known. My father is the first owner since 2006. All the body parts on the car are from the factory, nothing has been changed. There is cosmetic paint due to age for the periodic inspection. The car has been used by an elderly person, and the reason for selling is lack of use. Selling to the highest bidder, with or without the license plate.