I got 440 out my ed35 down to cornwall, a boring 70mph most the way but 3 up and lots of luggage. Computer said 38.7, not bad really as same trip in my mk6 gti was 480 (before refill). Ed35 has over 10 % more power and apparently a higher ratio final drive than the standard mk6 gti. So maybe the mk6 is not as efficient as we all think.