AAA tests show premium fuel benefits some vehicles, but comes at a high cost
Green Car Congress
DECEMBER 12, 2017
The trend toward recommending or requiring higher-octane fuel continues to rise as manufacturers work toward meeting stringent CAFE (Corporate Average Fuel Economy) standards. Individual vehicle test result averages ranged from a decrease of 1% (2016 Audi A3) to an improvement of 7.1% (2016 Cadillac Escalade).
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