Fuel Economy Content / Fuel Economy Content for ºÙºÙÊÓƵ en The Diet Soda Effect of Buying a Fuel-Efficient Vehicle /news/diet-soda-effect-buying-fuel-efficient-vehicle <p>Like ordering a diet soda with a side of fries, households who buy a fuel-efficient vehicle tend to buy a bigger, more powerful second car to compensate. This tendency, combined with the changes in driving behavior that result, may reduce up to 60 percent of the expected future gas savings from increased fuel economy in two-car households. That is according to a recent white paper from the University of California, Davis, MIT and Yale.</p> September 26, 2017 - 2:28pm Katherine E Kerlin /news/diet-soda-effect-buying-fuel-efficient-vehicle