 Bought this car is 08 to replace my 04 avalanche gas guzzler (14 mpg). I have to say it was a great decision. When I got the car, I replaced the plugs with the Bosch platinum 4s and replaced the air filter with an increased air flow filter, and gave it an oil change. Since then, I have gotten 59 mpg driving at 55 mph (flat interstate). It's definitely a step or two down from the avalanche but the gas mileage more than makes up. No major problems with the car so far. Perfect little grocery getter.