Originally Posted by krousdb
I suspect that since the automakers have knowledge of what the test routine is for EPA, that perhaps they "tune" the engine and transmission of the high FE models to produce the best EPA results, which helps to sell the high FE models.
sounds like a good theory to me. my last 3 tanks would have me at 29% above combined epa.
let's have a look at basjoos' numbers: he's about 20% above EPA @ lifetime mpg. if you just look at his 3 most recent tanks, roughly 62-ish, he's about 38% above.
and fredvx: 27% over EPA (2 tanks).
nothing outright conclusive, but it's good supporting evidence for your theory about epa & "efficient" cars.