R'nB star Usher was on hand when AMG celebrated it's performance 50 strategy at the eve of the Geneva Auto Show. The Mercedes-Benz performance division allowed a glimpse of the all new A 45 AMG – a high performance car in the compact segment, which celebrated its world premiere at the autoshow. The smallest AMG to date is a power-house – with 360 horse power and the strongest stand up production Four-cylinder-engine in the world. The compact sports car will be on the market in Europe from April. The premiere of the C 63 AMG Edition 507 also set sports car fans pulses racing. This alternative comes with 507 horse power on the market – 50 PS more than the C 63 AMG