Mercedes-Benz used the 2011 New York Auto Show to reveal the updated 2012MY E63 AMG, which now features the new 5.5-liter V8 biturbo engine instead of the old naturally-aspirated 6.2-liter unit. The new powerplant, already known from the CLS63 AMG, delivers 525 horsepower as standard, with an additional 32 ponies for a total of 557HP with the AMG Performance package. In base form, the 5.5-liter unit produces 7 more horsepower than the previous 6.2-liter engine.
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