
Originally Posted by
Merlin4979
The only major difference that I can see (feel free to correct me if I missed something here) is the whole V-6 vs V8 issue. The V-8 has more horsepower (354 vs 333), but I think it also adds a couple hundred lbs to the S5.
v8 on paper has more hp, but that is not true, the v6 outshines the v8 by a LOT

Originally Posted by
Black3.2
I have taken all 3 variants around a track S4 3.0t, S5 3.0t and S5 4.2 - I ran similar lap times in the 3.0t's and was slightly slower in the 4.2. I did notice that the S5 at speed felt more planted in the high speed corners (all three on stock suspension) but as i said the times were equal. In everyday driving i dont think you would notice much of a difference at all
Very interesting, the 4.2 v8 is a much less powerful engine

Originally Posted by
sidthafish
Given that there isn't much difference between the two; I would say that the performance difference between either one is marginal at best. You get an S4 if you need/want 4 doors. You get an S5 if the previous statement doesn't apply. Pretty sound logic to me.
performance difference I would imagine (but have nothing to back it up) would be that by themselves, since they are similar cars, the s5 would have the advantage. why? it has less doors, and it has a better chance at being more rigid across the entire chassis, stiffer frame leads to better handling around the corners, leads to faster times.
it would be close i would imagine, v6 s5 vs v6 s4, but the s5 in my head would have the advantage.
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