For the most part, the Quattro AWD you see is a permanent AWD system, but the ones used in the A3 and smaller models are a ...

The test car is loaded to the gills save a navigation system, and stickered at nearly ... with a 2.5 liter turbocharged engine making 218-hp and a Haldex AWD setup that runs like a front-driver ...

Vehicles with Haldex all-wheel-drive systems (manufactured by Haldex but installed in various vehicles under different names) use specific fluid and filters designed for those AWD systems.