I have had mine for about two weeks now. its impressive so far. I drive 86 miles one way to work and its averaging 28 MPG. not bad for a 4X4 truck. its a 2016 Z71 Colorado crew cab. I was driving a VW TDI Jetta that got 47 MPG until the wood goat (DEER) couldn't wait to cross the road. I have a 05 LLY Crew cab 4X4 dually that is still my favorite truck. Both are black. I have questions and will be back on later. Looking for transmission upgrades or tunes. and would like to add 33" tires and a really strong deer proof front bumper.