In January, German tuner ABT Sportsline announced a package of upgrades for the Audi RS5. It is now March, and German tuner ABT Sportsline has applied said package to the Audi RS4 Avant.

Dubbed the RS4-R, this modified Avant gets a nice, punchy 523bhp and 690Nm of torque – identical to its modded RS5. Though no performance figures are quoted, that RS5-R managed 0-100kph in 3.6s. So this’ll be quick, be in no doubt.

To aid this performance we find a new ECU and sports exhaust, while elsewhere deep inside there are ABT adjustable springs and stabilisers (while a full coilover setup is in development), a subtle aero pack (front lip, grille and rear skirt), and 21in ABT alloys.

Some things occur inside too, like partial leather seats with logos and some carbon detailing. Mostly, it’s a relatively cool, tasteful upgrade to one of the world’s ultimate fast estate Q-cars.