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. In recent years, the price gap between premium and regular-grade gasoline has risen from an historically steady 10% to 25% or more per gallon. improvement.
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