
Originally Posted by
djapeA4
So since you bought 2 Audi's with sport diff in them, do you feel disappointed in what you get out of them? I love my 034 rear sway bar that makes my A4 more tossable, that's why I thought the sport diff would be a must for a heavy V6 engine to feel light(er) in the corners. Precisely why and you can probably attest to the fact that S6 while being powerful is not great on a twisty road due to the weight of that V8 plowing the front end, despite all suspension gadgets and other niceties it has to counter the understeer. Right?
Not disappointed just not really a necessity depending on how you drive. Sport diff as a $1k option like it was on my S4 or included like on my S6 it is nice, and for my particular driving style, sure it is preferred, but most people do not need or use it. You may be an exception as well. However, at a $10k difference bundled with seats, wheels and painted calipers...I dunno if it is worth it. $1k more sure...maybe depending on the buyer $5k more, but at $10k it is up to you really.
I think it is just different demographics that Audi markets too... S4 "sporty", A6 and even S6 more "luxury", so the suspensions are tuned that way. Audi does not have to be worried about upsetting it's S4 target audience if it is too stiff or "sporty" but that would upset the A6/S6 target, so they have no choice but to soften it up some. You will always feel the weight of the car the sport diff just helps it to rotate better under acceleration as you push the limit. It is not like it magically makes the car handle better in every situation more like it makes it handle better in exceptional situations. The sway bars made a difference IMO both in reducing understeer and body roll, something the sport diff could not change.
It boils down to if you drive to the limit and you can get it for a price that is acceptable to you then sure the sport diff is worth it, but for most drivers (non-forum members

) they would not even notice and for myself $5k might be my limit for the additional goodies to the comp. package, otherwise I'd stick with an S4 or look for an S6... mileage be damned.
Since the SQ5 is the car I have without sport diff I did not see myself pushing it to the limit or accelerating hard through corners and I wasn't wrong. It still handles great for what it is and how it is driven, do in part to it's stiff suspension (rear passengers complain). I am seriously doubtful it would have been noticeably better with a sport diff for the way I drive that car. I may never know. Today they make the sport diff part of the $2500 package on the S4 which include adaptive dampers or $3000 on the SQ5 but includes air suspension. (CA might be different). Those options might be worth it for the adaptive suspensions alone and the sport diff is just gravy.
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