Our spies have sent us the first images with the next generation Audi S4 being tested in both sedan and Avant flavors.

Our spies have sent us the first images with the next generation Audi S4 being tested in both sedan and Avant flavors.

It was only yesterday when the new A4 Avant made its spy photo debut and now the model has been spotted in S guise together with the sedan version stretching out on the Nürburgring and hiding a more aggressive body. The cars had larger vents, a sportier suspension along with a quad exhaust setup clearly denoting we are dealing with more powerful versions.

The identity of the engine is not known at this point, but Audi could decide to use an evolution of the V6 3.0 TFSI installed in the current model where it delivers 333 PS (245 kW) and 440 Nm (324 lb-ft) of torque. A bump in output to 350-360 PS is expected and combined with an estimated 100 kg (220 lbs) weight loss thanks to the MLB Evo platform should enable the S4 Sedan be considerably faster than the current car which needs five seconds (+0.1s Avant) until 62 mph (100 km/h).

A previous report indicated the use of a nine-speed automatic transmission which could find its way inside the S4 models, but Audi could decide to stick with the seven-speed S tronic.

Taking into account the regular Audi A4 (B9) will be out in the next few months, expect the S version to be launched in the second half of 2016.

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Next generation Audi S4 Sedan and S4 Avant spied on the Nurburgring