Audi TT RS review – a five-cylinder quattro coupe, what’s not to like? - Engine and gearbox
Huge performance and a mesmerising soundtrack, but the TT RS can't capture true sports car greatness
Engine and gearbox
There is something just so right about two distinct Audi institutions being so well amalgamated. The TT has become Audi's contemporary trademark, so to fit it with an engine so easily relatable to its historic rally successes, seems to give the whole notion of an RS-badged TT that bit more substance.
The fitting of a 2.5-litre five-cylinder engine into the TT is not a new thing though, the last TT RS also had this type of engine, but whereas the old car used a simple US-market based five-cylinder engine, the new one has an all-new unit, designed specifically for Audi RS models – you’ll also find the engine in the latest Audi RS3.
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The main difference between the old and new engines is Audi’s adoption of an aluminium crankcase, itself the main contributor to a total engine weight reduction of 26kg. Alongside impressive figures of 394bhp and 354lb ft of torque, the real talent of this engine is it’s spread of torque, imbuing the small coupe with a broad and muscular feel throughout the rev range.
Audi exclusively pairs the engine to a seven-speed S-tronic gearbox, a fine partner in crime and, as typical for hot Audis, it is four-wheel drive. The TT RS, like other all-wheel drive cars on VW’s MQB platform, employs a Haldex system that uses a clutch pack to engage the rear axle whenever the car decides it needs torque at both axles.