Audi RS6 Avant Custom by MTM and Fostla
14 Jun 2012, 17:28 UTC · By: Mihnea Radu / German tuning firms MTM and Fostla have joined forces on a custom project to turn an old Audi RS6 Avant into one of the coolest and fastest cars on the road. Tuner MTM took the 5.0-liter twin-tur...