Mercedes Announces 435-hp Twin-Turbo 4.7L V8
May 6, 2010 | 08:13 AM
#1
Thread Starter
| Banned
Joined: Oct 2008
Posts: 41
Mercedes Announces 435-hp Twin-Turbo 4.7L V8
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.
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.
May 6, 2010 | 10:02 AM
#2
TEAMSPEED.COM
Joined: Sep 2009
Posts: 2,945
From: Fort Lauderdale, FL
It is reassuring to see engineers are up to the task to meet emissions requirements, improve fuel economy, and still increase power and torque. Lets just hope they are able to keep throttle response close to NA.
May 6, 2010 | 01:07 PM
#8
Teamspeed Pro
Joined: May 2008
Posts: 5,188
From: Oregon
Not for their concerns.
May 6, 2010 | 01:30 PM
#9
Teamspeed's Howitzer
Joined: Oct 2009
Posts: 12,273
Ohhh on the contrary- that's what the Fed's are forcing the Automakers to package it as- MORE fuel efficient.
Technically, if you barely use the accelerator, they're right. But if you drive like most of us drive, they'd be dead wrong.
Technically, if you barely use the accelerator, they're right. But if you drive like most of us drive, they'd be dead wrong.
May 6, 2010 | 01:46 PM
#10
Teamspeed Pro
Joined: May 2008
Posts: 5,188
From: Oregon
However, enthusiast drivers, and performance oriented vehicles make up a small wedge of the total market. On average, the new S class (for example) will be a more efficient vehicle. That is, the average real MPG of the upcoming model will be greater than the current.
Generally speaking, the fuel economy improvements across manufacturers will be realized. Most people aren't like us.
Last edited by M5Kid; May 6, 2010 at 01:48 PM.
