No. The Audi and BMW systems aren't very similar. Audi uses a mechanical Torsen AWD system, whereas the BMW uses a series of clutch packs to distribute power, so it is more electronic. The only similarity is the rear power bias for both.
Originally Posted by slambmw
You can't always base your opinion on mfg released videos. The BMW and Audi systems are fairly similar, Lexus is constantly last and rightfully so.
But Audi also has many different systems, such as the Haldex system (in the TT, A3), Crown-gear center diff system (RS5, A8, A6, etc), and the systems with the sport rear diff (S4, S5, A8, etc)
The Lexus system is half-assed. One of those reactive systems that is 100% FWD, until it senses slip, then goes to the back. xDrive/Quattro are proactive, constantly shifting torque/power around.
2011 X5 xDrive 35d Red/Black: ZCW, ZPP, ZRC, ZTP, 300, 386, 496, 4AB, 6FL, Combox, LED Coronas. 04/11 Production
Last edited by AutoUnion; 01-08-2013 at 07:53 AM.