Originally Posted by
lijbu
First off, I apologize if I missed it or post it in the incorrect section, but it’s been quite a challenge to find out which models are equipped with ultra Quattro…
From what I understand, the torsen diff is replaced by clutch pack in the ultra configuration. For my car b9.5 ‘21 a5 tfsi45, 261hp, the sticker shows Quattro, 7 speed tiptronic dual clutch… Dealership told me “no ultra in this one”… but the app shows Quattro ultra..
Does anyone here know what an easy visual indicator would be, to differentiate for myself?
Sent from my iPhone using
Audizine Forum
I used to have a 21 A5 Sportback 45 (261hp mild hybrid). You have Quattro Ultra.
Now if that for some reason concerns you, let me tell you about my experience with it. 18 months, with a full winter (and we get lots of snow where I'm at) and lots of twisty park road driving.
It worked fine and was brilliant in the snow. My current S5 with the sport diff is better on twisty roads, but the A5 was no slouch, and it's mostly because of the sport diff IMHO, not that it is true quatro vs. ultra. The ultra-setup actually can transfer power from front to rear very quickly ... milliseconds ... when needed. You can see videos on youtube that compare the two systems when wheels lose grip, and the Ultra actually does it faster most of the time. There is no real disadvantage to being in FWD mode only when just cruising along on a highway, it just increases your gas mileage. If you punch it, you should notice that the car will still squat like a RWD car, because it will send most of the power to the rear to keep the front from losing grip. It does *not* behave at all like a FWD car (I came from GTI land, I know exactly what a similar power/wr FWD car feels like). Especially driving in dynamic/sport, on country roads using throttle on corner exit would push you out of it nicely, the A5 had far less understeer then the GTI.
I think the only real-world issue with it (vs. perceived issues by people who have never driving a car that had it and are unfounded) is that if you are doing crazy things, you might overheat the controller/electronics that control the clutch pack. I think this happens mostly to folks driving on more intense off road situations with quattro ultra-vehicles, but it probably could happen if you are hooning it around on a track and using throttle modulation to keep sending more power to the rear to prevent oversteer as I described above re: the country roads. But country roads isn't the same as doing it on track over and over and over again, just like it's not the same when it comes to brakes. Tracking it is just more intense. I am not telling you it *will* happen if you do that, just that it may. I never tracked my A5 beyond a little bit of autocross (which was fun once I figured out how to use the throttle correctly to control the car), so I never really found out. If it does, you end up with the rear not engaging properly, so FWD more or less.
So if it is/was somehow of concern to you, I hope that helps.
Reply With Quote
. Absolutely done to help average out fleet consumption numbers across all sales. As some folks have already mentioned in other threads, I'm not sure that most owners will notice. This advanced computerised control system uses a ton of vehicle measurements in it's decision making process and I certainly can't tell any operational quattro difference between my B7 and B9.
Bookmarks