I recently purchased a 2013 Hyundai Elantra GT; traded in my 2010 Hyundai Elantra. The sticker advertises 39 mpg hwy, the 2010 was 32 mpg hwy. Two days after I bought it, I read that the EPA is investigating Hyundai/Kia for falsely stating mpg. Criminal charges are possible and even rebates to consumers. When I bought the 2010 (new), I tracked the mpg for a year and averages 31 mpg. After four tankfuls the 2013 is doing the same. I'm building my case.