Senner Tuning Mercedes SLS AMG
German auto-tuner Senner takes a different route from their usual Audi collaborations by throwing their hat in the ring with a sleek Mercedes SLS AMG. Known as the fastest of all in the Mercedes-Benz lineup, this SLS AMG features a upgraded 6.2-liter V8 engine capable of 606HP -- an increase from it's normal 571HP range. The engine also received new sports exhaust and intake systems finished off with a set of 20-inch Corniche Vegas alloy wheels. Only available in Germany, this upgrade has a hefty price tag of €19,500 (abour $25,000USD) atop a $183,000USD for the car itself.