Chevy 4cyl turbo. I hesitated to post this here because of the 1/2 ton is worthless 6700 lbs ain't nothing crowd here but for some people this may be all you need. I bet this thing pulls better ...
While I do find it interesting and it probably would out pull my 5.3 I'll stick with whats proven, and paid for.
TFL did manage to get 24 MPG on their test loop in this truck which isn't too bad. I wish they could test the trucks at 80 mph when not towing, thats where my speed is at when going up to KC to see Mom. I get around 16 at that speed in my present truck.