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AAA: Start-Stop Systems Deliver 5%-7% Fuel Economy Boost
Tests by AAA show automatic engine stop-start systems increase a car's fuel efficiency 5%-7% on the U.S. Environmental Protection Agency's urban test cycle.
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Tests by AAA show automatic engine stop-start systems increase a car's fuel efficiency 5%-7% on the U.S. Environmental Protection Agency's urban test cycle.
The auto club measured fuel economy for a 2013 Chevrolet Malibu, 2013 Ford Fusion and 2014 Mercedes-Benz CLS 550 with their stop-start systems turned on and turned off.
Testers followed EPA's city driving routine, which covers about 11 miles at an average speed of 21 mph. Under those conditions, AAA calculates, a stop-start system would save the average U.S. driver $179 per year in fuel costs. The calculations assume a vehicle that covers 15,000 miles per year, gets 20 mpg and burns gasoline priced at $3.65 per gallon.
AAA cites a forecast by Navigant Research that predicts the number of cars sold in the U.S. with stop-start systems will climb from 500,000 last year to more than 7 million by 2022 as carmakers adopt systems to help achieve future fuel economy requirements.
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