AWD Vehicles, Checking

Testing on a one-axle roller test stand for AWD vehicles

• During this test, the wheels of one axle are driven in opposite directions, to prevent delivering power to the other axle.
• The test speed must not exceed 6 km/h (4 mph), otherwise the brakes may lock up due to the roller start-up delay (EDL regulation).
• Test stands approved by Audi meet these requirements.