2008: The most fuel efficient year yet - AutoblogGreen Automakers set fuel efficiency record Do keep in mind these CAFE numbers are based off unadjusted EPA dyno numbers (the pre-MY 08 method window sticker numbers were fudged downwards from these). I'd also assume they take into account the inflation by the E85 scam... err.. incentive. As a reference, the Prius counts as getting ~65 mpg for CAFE purposes.