Originally Posted by Dozhdbog
Why do you think that?
Car magazines and BMW testers are going to use different testing methods. But why would BMW use testing methods that favor one transmission over another? They are going to test all the cars under the same conditions and using the same testing methods.
I know Road & Track tries different methods to see which one gets the best acceleration time. In their E90 335i test, they said dropping the clutch at 4500 rpm got the best times.
It's important to check to see if magazine test numbers state the altitude and temperature that the test wast conducted at. Road & Track does that. Not sure about the other magazines.
From my experience of my old car-magazine-reading days, Car and Driver tends to get the fastest times:
Car and Driver: 2007 E92 335i 6MT:
5-60: 5.6 "street start"
1/4mi: 13.6 @ 105 mph
50-70 mph in 6th gear: 6.0
Road & Track: 2007 E90 335i 6MT:
1/4mi: 13.5 @ 104.5 mph
Location: Irvine, CA
Elevation: 350 ft
Both magazines tested the 335i faster than BMW's numbers. I'll see what other numbers I turn up, including some 6AT numbers.