Quote:
Originally Posted by JimD
The only logical explanation is gearing unless you want to theorize that the DCT clutch slips all the time (which is almost certainly not true because it would fail quickly if it did).
Jim
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Agreed, but Jim, the 3 trannies have the following overall ratios in top gear:
135i DCT: 2.56 (2.56 x 1.00)
Relying on the 2k revs @60mph Lee reports and this is BMW's spec for the 335is DCT
135 MT: 2.62 (3.08 x 0.85)
335i E92 Step: 2.39 (3.46 x 0.69)
So the 135i has essentially the same overall gearing in top gear and should return similar EPA highway results for both transmission options.
So does the EPA "highway cycle" spend more time in the intermediate gears? Or are both of the DCT clutches are slipping
???
Tom