You might think BMW had done a pretty good job of killing off the Mercedes E55 AMG when it launched the deeply wonderful BMW M5 last month. With 507bhp, it eclipses the mere 476bhp of the E55.

It also had the same power as the Mercedes-Benz E55 AMG, one of the most notable E-Class AMG generations. To accommodate the power from the supercharged V8, the CLS 55 AMG utilized a stronger ...