What is it?
The Audi RS4 Avant operates in a rare old sphere of fast compact executive estates that involves only it and the Mercedes-AMG C63 Estate. There’s no BMW M3 estate and, as yet, no sign of an Alfa Giulia Quadrifoglio with a square back, either. So if you want a fast, smallish dog carrier for £60k or so, here you are.
Now in its fourth generation, the RS4 also leaves the C63 as the only V8-powered car in this class. Like the RS5, the new RS4’s engine has been downsized to a 444bhp 2.9-litre twin-turbocharged V6, rather than having the previous generation’s charismatic naturally aspirated V8.
This drives through an eight-speed torque-converter automatic gearbox, to all four wheels, in a body given a bit more chunkiness and cooling and 30mm-wider wheel arches.
The quattro four-wheel drive system puts 60% of power to the rear wheels under normal driving, but can put as much as 70% to the rear, or, 85% to the front. This is the kind of system intended to make the RS4 more agile. To that end, there’s a ‘sport differential’, an electronically controlled rear differential that can apportion as much power as it likes to either side, as standard.