GM to double models with 40 mpg highway or better by 2017; ongoing manufacturing efficiency improvements
Green Car Congress
JULY 12, 2013
Opel also estimates it will reduce the average carbon tailpipe emissions from its fleet by 27% by 2020. The company is also the thermodynamic efficiency of gasoline engines using a suite of technologies that include downsizing, turbocharging, direct injection, variable valve timing and cylinder deactivation. Earlier post.).
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