General Motors is overhauling its compact car engines with new three- and four-cylinder powerplants that will span into at least 27 models in the next three years. Three new gasoline Ecotec engines will be available: a 1.5-liter four-cylinder with 113 horsepower and 108 lb-ft of torque, a 1.4-liter turbocharged four-cylinder with 148 horses and 173 […]

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