Originally Posted by rapistwit
Mercedes says the E63 has 507 bhp and 465 lb ft of torque while the E55 is rated at 469bhp with 516 lb ft of torque.
The engine change was really a lateral move for Mercedes. They needed a less torquey motor for their 7 speed tranny.
If you check out the Merc site now they are quoting the 2010 E63 at 518bhp. Must have tweaked something for this year. It's getting like the motorbike world with changes every 6 months.