Chevrolet makes Stop/Start standard on base 4-cylinder in 2015 Impala; 5% improvement in city fuel economy
Green Car Congress
MAY 22, 2014
Stop/start technology will be standard on the 2015 Impala base 2.5-liter liter ECOTEC engine, an addition that improves the vehicle’s city fuel economy by nearly 5%, or one mile per gallon. For the 2015 model year, the Impala will be available with two powertrains, a standard 2.5L engine with stop/start, and a premium 3.6L
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