Mercedes-Benz 2011 S63 AMG

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Engine downsizing has now come to the almost top-of-the-line Mercedes-Benz S63 AMG with the adoption of AMG’s new twin-turbo 5.5-liter V8. The new direct-injected V8 bumps output up from a mere 518 horsepower to 571 horsepower along with generating 663 pound-feet of torque between 2,250 and 3,750 rpm. That’s sufficient to propel this behemoth to 62 mph in just 4.5 seconds in normal trim or 4.4 seconds if you opt for the AMG sports package.

The 2011 S63 also swaps out its previous torque converter automatic transmission for the multi-clutch unit from the SL63, a move which should lend it a more sporting feel. Just as other automakers get both performance and efficiency benefits from boosted direct-injected engines, the S63’s combine fuel economy numbers have jumped from 16.3 miles per gallon (U.S.) to 22.4 mpg on the EU test cycle.

The EPA numbers aren’t yet available, but we would expect a similar real-world increase from the 2010 model’s 14 mpg, though perhaps a bit smaller since the EPA’s testing methodology won’t show any benefits from the S63’s new automatic start-stop feature.

(source: Autoblog)

Engine downsizing has now come to the almost top-of-the-line Mercedes-Benz S63 AMG with the adoption of AMG's new twin-turbo 5.5-liter V8.

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