Q: I heard that Audi 2008 R8 model has a R-tronic Transmission. Do you guys think that Audi would apply R-tronic to S- series model (S4, RS4, S5, S6, S8) later ??? What's difference between R-tronic & BMW's SMG transmission ?? Thank you if you answer these two questions.
A: Audi's R-Tronic Transmission is overall the Lamborghini E-Gear Transmission rebadged. The difference between the R-Tronic and the SMG is that the R-Tronic uses single-clutch, while the SMG uses double-clutch. This single-clutch system helps for faster shifts and a lighter weight. Audi will not apply the R-Tronic to any other model, as it is extremely expensive to manufacture (it is not standard on even the R8) and is not so high in demand otherwise.