The specs say that it will run in EV mode up to 30 mph and get 20 mpg in the city. It turns on the engine at very low mph and gets 16 mpg city with very careful driving. Chevy service reps in Dublin and San Leandro Ca say that this is normal and that nothing is wrong.

Car has 40,000 miles on it and has both dealer and manufacturer warranties, but the service advisors will not look at the problem unless I agree to pay them if they can not find the problem. They do not consider the early engine start and the low gas mileage to be a problem.