Quote:
Originally Posted by Hobbe74
VW 4Motion is from Haldex, same as Volvo uses. FWD with help from rear if no or bad traction on front axle = so-so.
Audi uses more then one system, depending on model, but name them all Quattro.
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Starting with gen 3 Haldex, it is now proactive and is no longer just FWD waiting for slippage to send power to the rear axle. It's all electronically controlled, just like xDrive and will send power to the rear axle depending on things like throttle position, incline, speed, etc. The TTRS, RS3 and RSQ3 don't seem to be too hampered using it.