So the potential is there for the TT RS to be faster in a straight line, even if US buyers won't have this option. Handling is fairly comparable, the engine in the TT RS is transverse mounted, rather than longitudinally mounted and hanging way out in front of the front axle, like it is on other Audi
models; this means the TT RS doesn't suffer as much from the characteristic Audi understeer problem. The Grand Sport, on the other hand, lacks a fair amount of the sophistication that is put into the higher-priced Corvettes, and ends up being a bit tail-happy as a result. This particular difference illustrates the main difference between the two cars.