Question: how are hhr on gas?
Answer: Chevrolet has manufactured models of HHR FWD for 6 years. They average 23.9 combined miles per gallon, with the latest 2011 HHR FWD above average at 26 combined MPG. ... The HHR FWD consumes about 13 barrels of petroleum per year, according to the standard estimate of 15,000 miles driven.