It's a nice little sports car, but that's a lot of money for the pleasure of open air motoring. Australian TT's roadsters come with leather upholstery, BOSE sound system, heated seats and climate control air conditioning. Audi is at pains to emphasise the safety features of the roadster, which meets European front and side impact criteria, and the basic strength of the open car's bodywork. Manufacturer's data . Differences in rotational speed drive a swash plate and thence an oil pump to pressurize the multi-plate clutch.
Electronic sensors control the pressure and therefore the degree of slip and torque transfer.