Chevrolet has announced that it will include stop-start technology as standard in the entry level 2015 Impala. The result is a nearly five-percent improvement in city fuel economy, also known as one mile per gallon, up to 25 mpg, combined.
2015 Chevrolet Impala
For 2015, the critically-acclaimed Chevrolet Impala sedan will come in an all-new version: Bi-Fuel. Unveiled yesterday in Washington D.C. by General Motors CEO Dan Akerson, the car will run on both gasoline and compressed natural gas (CNG).