AMG is ramping up development of its hot Merc CLS63

Mercedes’ performance arm, AMG, is already ramping up development of the hot version of the CLS — as these spy pictures of the test hack lapping the Nürburgring prove.

The CLS63 AMG will be powered by the same twin-turbocharged 5.5-litre V8 motor as the recently launched CL63 AMG.

See the spy pics of the Mercedes CLS 63 AMG

It has 536bhp and 590lb ft on tap in standard trim, and 563bhp with an optional performance package. Those figures mean that the new car should trim a tenth or two from the outgoing CLS63’s 0-62mph time of 4.7sec.

Opting for the performance package will also remove the 155mph speed limiter, freeing up the CLS63 to reach more than 180mph.

Read the full story on the new Mercedes CLS, including official pics

However, even the ultra-rapid CLS is likely to get stop-start and improved brake energy recuperation as Mercedes tries to lower the average emissions across its range.

In the CL63, the twin-turbo V8 emits over 100g/km less CO2 than the old normally aspirated powerplant.

See all the latest Mercedes reviews, news and video

Our Verdict

Mercedes-Benz CLS
Does the Mercedes CLS lead the four-door coupé pack?

Does the Mercedes CLS lead the four-door coupé pack?

Join the debate

Comments
18

27 August 2010

Will be interesting to see a test between this and the new M5, I prefer the CLS design to the 5. Also wondering which engine will be better as they are both twin turbo's this time round. Will be fun to see which one wins ? shame the RS6 has kind of lost the lime light as its still more powerful then this !

27 August 2010

not impressed by the power, less than 100bhp/litre for a turbo engine from AMG.

A tuning brand should make tuned engines, 200bhp/litre should be the target. with an output of 1100bhp from the 5.5 V8, if it only needs 550bhp then give it a 2.8 V8 turbo.

i think many brands are scared of small capacity engines when they used to sell cars with massive ones.

27 August 2010

[quote beachland2]

not impressed by the power, less than 100bhp/litre for a turbo engine from AMG.

A tuning brand should make tuned engines, 200bhp/litre should be the target. with an output of 1100bhp from the 5.5 V8, if it only needs 550bhp then give it a 2.8 V8 turbo.

i think many brands are scared of small capacity engines when they used to sell cars with massive ones.

[/quote]

I am sure AMG can extract more power from the engine but there probably legal reasons behind and tech issues, the cars body and parts may not be able to cope with that much power and could get damaged due to the wear from the extra power, issue with fuel economy also may arise and the road safety people who decide the cars design may not be happy either with to much power.

27 August 2010

[quote beachland2]A tuning brand should make tuned engines, 200bhp/litre should be the target. with an output of 1100bhp from the 5.5 V8, if it only needs 550bhp then give it a 2.8 V8 turbo.[/quote]

Huh? What?

27 August 2010

[quote moe360][quote beachland2]

not impressed by the power, less than 100bhp/litre for a turbo engine from AMG.

A tuning brand should make tuned engines, 200bhp/litre should be the target. with an output of 1100bhp from the 5.5 V8, if it only needs 550bhp then give it a 2.8 V8 turbo.

i think many brands are scared of small capacity engines when they used to sell cars with massive ones.

[/quote]

I am sure AMG can extract more power from the engine but there probably legal reasons behind and tech issues, the cars body and parts may not be able to cope with that much power and could get damaged due to the wear from the extra power, issue with fuel economy also may arise and the road safety people who decide the cars design may not be happy either with to much power.

[/quote]

Yes, they can indeed extract more power if they wanted to...for instance, in the case of the C63 they said that with just a few tweaks they could get the power output to be much higher, but they wanted to ensure absolute reliability; remember that an engine tuned to give the most power and torque possible tends to be stressed, resulting in a higher risk of problems and usually a shorter lifetime. That's probably why the 2.0-litre, 400bhp Mitsubishi Evo 8 needs a service interval every 4.5k miles or so.

Also, remember that the CLS is two-wheel drive; too much power would still end up being pretty much useless on anything other than a straight road...

 

- Follow your own star -

27 August 2010

[quote ischiaragazzo]

[quote beachland2]A tuning brand should make tuned engines, 200bhp/litre should be the target. with an output of 1100bhp from the 5.5 V8, if it only needs 550bhp then give it a 2.8 V8 turbo.[/quote]

Huh? What?[/quote]

Old Beachy's been on the cheese again.

27 August 2010

the vag 1.4 goes from 120bhp to 180bhp. non aftermarket tune.

an ecu map already exists for taking the 1.2 105bhp to 140bhp. its a myth from decades ago about stressed engines, thats when engines were not made properly.

a 1.2 with 140bhp is not stressed at all....

the current evo 2.0 400bhp has at least a 12k mile service schedule, more than many low tune petrol cars without turbos. it is not stressed at all with 200bhp/litre.

but a standard block 1.2 with 240bhp (not 140bhp) would be over stressed, but can easily be built to not be over stressed. it would cost more money.

having a 1.2 with 140bhp ecu map would not stress the car as much as it being 105bhp and the tyres a few psi down on pressure in my view, or having a set of golf clubs in the back and a fat partner riding shotgun.

.................

i am not saying a bigger turbo can just be added to make the 530bhp 5.5v8 to make it 1100bhp and it will last a ling time. i'm saying they could easily build to do that, which is different. but its costs money, and it shows a huge amount of cost cutting in the industry, like most other people in the world are having to deal with about everything.

..................

its also not to be dismissed even if the engine does have a lower parts life than might be expected. so what if it does need a new engine rebuild once a year as part ofthe service schedule? ok its adds £10k to the annual serivce cost. but thats nothing in the scheme of supercars. it just keeps the car ticking over thats all the owner cares about. yes it might put people off that were also considering a ford focus as a potential used alternative. as it happens this is not the case anyway.

look at the service schedule of the £650k lotus GP2 alike road legal race car.thats not even turbo charged and has load of bhp, and at high rpm. it's fine. dont worry about it.

27 August 2010

Is this Mercedes Bentley GT?, seen some other pics of it from most angles and it's not good viewing, the rear quarter view makes it look to baronial, Rolls Royce if you like, there's to much detail , front bumper jewellry, the interior though looks quite inviting, shame its wrapped up in that limo stlye body though.

Peter Cavellini.

27 August 2010

If you read the article rather than running off to Google looking for facts to make yourself look like a giant tool once again, you will see that Merc have rather craftily made the extra power part of a "performance pack". They have obviously de-tuned the engine to some degree knowing plently of people will pay just that bit extra for a few more bhp that won't really make a difference, but hey its marketing and it makes the world go round.

Its alos obvious to anyone with half a brain that AMG can extract whatever power they chose from a turbo V8. Undoubtably a committee will have decided the power output based on where they want the car to sit in the market. There is always room for a 65AMG version after all if they desire to make one.

More generally remember that power is only torque times revs, its something to have in mind when comparing engines. As for the Evo FQ 400 it has horrific turbo lage that makes it a real acquired taste, not something most Merc owners would want from an engine.

27 August 2010

how rude.

Pages

Add your comment

Log in or register to post comments

Find an Autocar car review

Driven this week

  • 2016 Audi A3 Sportback e-tron UK review
    First Drive
    29 September 2016
    First UK drive finds the facelifted A3 Sportback e-tron remains a first-rate plug-in hybrid that is packed with tech if a little short on driver appeal
  • Citroen C11.2 Puretech 82 Furio
    First Drive
    29 September 2016
    Citroën's city car gets a new sporty-looking trim level, adding visual adornments, but no premium for the 1.2-litre Puretech triple we're driving
  • Mercedes C350e Sport
    First Drive
    28 September 2016
    Petrol-electric C-Class is a surprisingly well-priced alternative to a diesel but not the greatest example of the new ‘PHEV’ breed
  • Car review
    23 September 2016
    Aston kicks off its ‘second century plan’ with an all-new turbo V12 grand tourer
  • Ford Ka+ 1.2 Ti-VCT 85
    First Drive
    22 September 2016
    A rounded, refined and well-sorted bargain supermini – once you’re used to the confusing role redefinition imposed on the once-cheeky Ka