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Originally Posted by DinanX5
What makes you say that? I would think that (all things being equal) AWD would benefit acceleration not only from a stop, but to some extent from any starting speed...  |
The closest we can get to all things being equal is to compare to equivalent models - one with AWD, the other without. A E90 BMW 330i runs the qtr in 6.1 second. An E90 BMW 330xi runs its in 6.8 second. Things are not equal here because the AWD systems adds a couple of hundred pounds of weight. Even if they were weight equivalent, the AWD 330i would still have the disadvantage of parasitic horsepower loss caused by pushing power to 4 wheels instead of 2.
I've never seen an AWD outperform its model equivalent 2WD.
Regards, Mike