The top-of-the-range Audi S4 and Avant estate saloon models will be offered with a 342 bhp turbocharged, hybrid V6 turbocharged diesel engine.
The new powertrain will combine a 3.0-litre V6 TDI diesel engine with a 48 V electric compressor with belt driven starter motor. In addition to producing 342bhp, the system produces 516lb ft of torque, allowing the S4 saloon to reach 0-62mph in 4.8 seconds, with a limited top speed of 155mph. The Avant is 0.1secslower to reach 62mph.
Both versions of the rival Mercedes-AMG C43 will retain Audis quattro four-wheel drive system and use an eight-speed automatic gearbox.
Audi indicates a fuel consumption of 45.5mpg for the S4 saloon and 44.8mpg for the farm. CO2 emissions range from 161-163 g/km and 164-164 g/km CO2 respectively.
The smooth hybrid diesel engine is the same as the recently introduced S5, S6 and S7 Sportback models, although in a moderately different tuning state, with 342 hp. It is the only engine to be offered in the European market for these models, and Audi is likely to continue that trend with the S4, given the need to meet new WLTP tests and fleet emissions targets.
Audi is currently preparing updated versions of the A4 and Avant saloon models, which have been spy-tested with a series of style adjustments and are likely to be unveiled later this year.
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