The S4 now produces 349bhp and 369lb ft of torque, delivered to all four wheels through Audi’s quattro all-wheel drive system, giving a 0-62 time of 4.9sec and a top speed limited to 155mph.
The S4 Avant, with its turbocharged 3.0-litre V6, also achieves a claimed fuel economy of 37.6mpg and 175g/km CO2 emissions, compared with the 38.1mpg, and under 170g/km CO2 Audi claims for the S4 saloon, although Audi has stated that these figures are not yet officially confirmed.
Audi says the new engine is considerably lighter than that of the previous S4, which helps to improve fuel economy. It is coupled to an eight-speed tiptronic gearbox, while a self-locking differential manages the power distribution; 85% of the power can be sent to the rear axle, and 70% to the front, while the standard set-up sends 60% rearward. An upgraded diff is available as an option.