I have had my 300E for almost 6 months now and in that time I have driven it almost 5500 miles. I have been keeping a log of all of my fuel stops and I finally got around to logging them into fuelly.com and I was surprised at the result. 24 MPG average with my best tank at 28.1... Not too shabby however I have had the 300TE for almost two months and driven it about 1100 miles and it is only getting 20 MPG. Is the manual transmission really good for an additional 4 MPG?