Mercedes has introduced a power upgrade package for the C63 AMG.
The Mercedes C63 AMG with Performance Package Plus produces an additional 30bhp, taking its output to 480bhp.
The power increase is achieved by modifications to the 6.3-litre engine, including used forged pistons designed for the SLS AMG supercar, plus new connecting rods and a lightweight crankshaft. The ECU is also modified.
The upgrade means the C63 AMG saloon accelerates from 0-62mph in 4.4sec - a tenth faster than the standard car. It is also 1.2sec faster to 124mph.
The tuning pack is available on saloon and estate models, and includes an AMG high performance brake system, a carbonfibre lip spoiler and a sportier steering wheel.
Prices in Europe start at 7080 euros (£6413).