Merc E63 AMG now with 557bhp

Third 63-badged AMG to ditch 6.2-litre V8 for 5.5-litre twin-turbo unit, gets more power

Source: http://www.topgear.com/uk/car-news/new-merc-e63-amg-2011-04-21?utm_source=rss&utm_medium=rss&utm_campaign=ongoing

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