Only Alpina’s B5 Bi-Turbo Touring can match Abt’s RS6 Power R's 200mph top speed. Based on the BMW M550i, so it has a 4.4-litre twin-turbo V8, an eight-speed automatic transmission and ...
The German tuner Abt ... RS6 Performance that makes 621 horsepower (463 kilowatts) and 627 pound-feet (850 Newton-meters) of torque. The tuner adds new turbos, an intercooler, and Power R software ...