We just recently learned that the Audi S5 Coupe and Sportback models will be getting TDI diesel variants, which is a bit of an unusual turn of events in today’s modern market. Diesel isn’t exactly popular at the moment, due to an emissions scandal within the Volkswagen Group. Yet, Audi is releasing new diesel variants of its performance cars for select markets. After the S5, we’re now learning that there will be diesel variants of the Audi S4.
Both the Audi S4 Sedan and Avant will be getting a diesel option, the same as in the S5. So the diesel option is a 3.0 liter turbocharged V6 TDI engine that makes 347 hp and 516 lb-ft of torque. That power allows the Audi S4 TDI to get from 0-60 mph in 4.8 seconds.
That’s a bit less power and a bit slower than the petrol-powered Audi S4 but only by a few tics. To replace those few tics worth of speed, the TDI-powered S4 is a bit more efficient and better on gas than the regular gasoline version. So that’s the trade-off and the reason for the TDI version.
Much like the standard Audi S4, the TDI version will gain an electrically-powered compressor (EPC), which is essentially an electric turbocharger. This helps eliminate turbo-lag by being capable of delivering boost to the engine at as little as zero-rpm. This not only eliminates turbo-lag but increases efficiency as well. So despite being a diesel engine, it’s actually quite high-tech.
This isn’t important news for North American markets, as we won’t be getting the Audi S4 TDI in any way. However, for customers that do live in markets where the S4 TDI will be offered, such as its home market in Germany, the S4 TDI will be a car that offers similar performance with the same looks and even better efficiency.