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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
Find out more after the jump:
Mercedes has just announced details of its new V6 and V8 engines with added power and a massive improvement in fuel economy. Most exciting is a new 4.7-liter twin-turbo V8 with 435-hp and 516 ft-lbs of torque. This engine is set to replace the current 5.5-liter naturally aspirated V8, adding 12 percent more power and 35 percent more torque. The new V8, featuring direct-injection technology, will also boast a 22 percent improvement in fuel economy.
The twin 4.7-liter powerplant will first appear in the CL-Class and S-Class.
Next up is a much needed replacement for the anemic and not-so fuel efficient 3.5-liter V6 engine. Also measuring in at 3.5-liters, the new engine may have the same displacement but is an all new motor with a 60 degree V versus the 90 degree angle on the old engine. It also gets direct-injection to bump power to 306-hp and 273 ft-lbs of torque – which is still shy of the sort of torque BMW is making in the 335i and short of the power Infiniti is getting in its 3.7-liter V6. Mercedes claims than in the S350 (not offered in the U.S.) fuel economy improvements will be as much as 24 percent.
GALLERY: Mercedes Direct-Injection 4.7L Twin-Turbo V8 and 3.5L V6