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 |  Jul 05 2010, 9:47 AM

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Mercedes has just released the updated 2011 CL-Class and as we suspected, it arrives with the company’s all-new twin-turbo 4.7-liter V8 engine. Making a total of 429-hp and 516 ft-lbs of torque, it’s a dramatic increase of 47-hp and 125 ft-lbs over the old 5.5-liter V8. The result can be seen immediately, with a new 0-60 mph time of 4.9 seconds for the CL550 4MATIC. The previous model was rated at 5.4 seconds. And yet despite the huge power increase, fuel economy is up by anywhere from 10 to 15 percent says Mercedes.

As for the CL600, it retains the big 6.0-liter twin-turbo V12 with 510-hp and 612 ft-lbs of torque, with a 0-60 mph time of just 4.5 seconds. As impressive as that sounds, we’re not it will be worth what will no doubt be a huge price increase over the CL550.

There’s also no word yet from Mercedes on a revised CL63 using the new twin-turbo 5.5-liter V8 with 536-hp.

The new model also comes with a long list of upgraded features.

GALLERY: 2011 Mercedes CL-Class

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Find out more after the jump:

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