E85 & FFVs: A Little Low on the MPGs

Ever wonder why flex-fuel vehicles can run on straight 100 percent gasoline, but can't burn pure ethanol? Check out our article From Gasoline to Alcohol to find out.

Or maybe you have an FFV and you've been wondering why you get X fuel economy with gasoline in the tank, but it drops to Y when you fill 'er up with E85? Find out about it in our Why Fuel Mileage Drops with E85 article.

2008 Nissan Armada FFV - photo © Adrian Gable