CLS55 vs ML63 :some thoughts
Anyways i met up with this guy the other day, and arranged to go to a secluded road and try it from a standstill... temperature was 9c (2am
) ... lined up the two cars... he brake torqued, i didnt ... Started on 3 honks... he immediately got the jump on me by about one and a half car lenghts, and strangely enough this time it wasnt an easy race as i had expected. By around 70 mph we were neck and neck , and only at around 90mph did i start to gain a lead... at around 110mph i was one car length ahead, and we had to brake...
is this normal
... i never quite expected the ML63 to be such an absolute beast... or maybe all the people i encountered driving them just werent very good at doing starts. is it so difficult beating an SUV in a straight line
but once i got reasonable traction, is it normal for the big heavy ML63 to hang on with me right up to 100mph
but once i got reasonable traction, is it normal for the big heavy ML63 to hang on with me right up to 100mph

There's a video around here w/CLK55 209 chassis (no blower) running ML63 they were about even, as I remember, possibly pulled the ml63 by 1-2 at top end these races were from a dig as well, I'm sure others in the know will chime in.
There's a video around here w/CLK55 209 chassis (no blower) running ML63 they were about even, as I remember, possibly pulled the ml63 by 1-2 at top end these races were from a dig as well, I'm sure others in the know will chime in.
http://www.youtube.com/watch?v=jYVOMdFNF_c
i dont *think* i have a problem with my intercooler... the car was in for an oil change 20 days ago and i imagine that the dealer would have informed me about this. when something goes wrong , does the error come up on the "malfunctions" menu , or not?
maybe its just the low temperature that did not allow for a good start... i guess ill have to try again when its warmer
Last edited by 0700700; Apr 16, 2007 at 03:24 PM.
http://www.youtube.com/watch?v=jYVOMdFNF_c
i dont *think* i have a problem with my intercooler... the car was in for an oil change 20 days ago and i imagine that the dealer would have informed me about this. when something goes wrong , does the error come up on the "malfunctions" menu , or not?
maybe its just the low temperature that did not allow for a good start... i guess ill have to try again when its warmer
Deff warm engine up to normal operating levels, but running in colder weather will be a deff plus to your supercharger, huge gains to be had colder air = denser oxygen levels = more total hp!
No but from what I've heard you loose intermittent power, even shuts it entirely off when not operating correctly, engine gets to a certain temp senses imminent damage if ran hotter, so shuts off Supercharger which is a heat making monster thus, you need a properly working intercooler common failure no error codes I've ever heard of.
But if your not beating an ml63 from a dig, and you're getting good traction? somethings a miss?
Last edited by Thericker; Apr 16, 2007 at 03:38 PM.
No but from what I've heard you loose intermittent power, even shuts it entirely off when not operating correctly, engine gets to a certain temp senses imminent damage if ran hotter, so shuts off Supercharger which is a heat making monster thus, you need a properly working intercooler common failure no error codes I've ever heard of.
But if your not beating an ml63 from a dig, and you're getting good traction? somethings a miss?

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ic pump failures are not seen through your engine temps. you only feel the power loss.
specially if you disable esp.. the power loss would be more noticeable.
http://www.youtube.com/watch?v=jYVOMdFNF_c
i dont *think* i have a problem with my intercooler... the car was in for an oil change 20 days ago and i imagine that the dealer would have informed me about this. when something goes wrong , does the error come up on the "malfunctions" menu , or not?
maybe its just the low temperature that did not allow for a good start... i guess ill have to try again when its warmer
also give me ZERO pm notice??I don't sit here in cyberspace waiting for you to finally make up your mind? were a good hour & half+ away from eachother(half-way each)?? weekend bra! I'm not driving all the way down to LA right now
(although, your free steak dinner, prize for winning would be good! lol..)Any day on the weekend ANY WEEKEND? you choose?? my PM box is waiting?
I look fwd to a good raceI feel very confident I'll even take a quick video of my baked tires, before our race...63 is not in E55k territory especially from a dig, I'll do a massive burnout right before we run to get the last bit -O- traction outta these slicks, when me & Vadim ran from 30mph up that was my closest race, he pulled me by 3/4 of a length and I held there all the way up to 140kilometrs of coarse
Just a little smack talk to inspire you to show up this? or next weekend??? plus daytime is by far better, hell even twilight so we can at least have some good vidz, I hate night vidz, hard to see exactly what went down.PM box is your friend
lol...
Ohhh ****!! just remembered you have the Charcoal filter mod!!!!!!!! I'm freakin' dead!!!
Last edited by Thericker; Apr 16, 2007 at 11:00 PM.
But even if I loose it's all good..I'm still not overly terrified of the 63 after reading this..
Let's set the scene
MHK and I met up at Moroso at 6pm on Friday 29th Sept. MHK is a great guy and both he and I had nothing to prove – it was purely to put the rumors to bed. No egos, no pride, just good times. MHK, thanks buddy – really appreciate you making the time.
MHK has an 06 AMG CLS63 with approx 1500 miles and I have an 06 AMG CLS55 with approx 4,500 miles. Both are black – his obsidian black, mine is regular black. Both our cars are absolutely stock including tires. Both of us left our front tire pressures at normal (around 45psi) and set our rears at around 25/26 psi. MHK had ¾ tank of gas – I had ½ tank.
I have a fair amount of experience at the track – both on circuits and at the drags, and I have been able to get my old E55 to launch with 60ft times in the 1.78 range quite consistently – that will let you know that I have some experience in launching the 55k motors. I have run 12.169 with my old E55 and 12.509 with this CLS55 when it had 1,500 miles on the clock in 55 degree weather. Note that the E55 is definitely faster than the CLS55 off the line – most of it due to the 18” tires giving much more grip than the 19”.
Note that I most certainly didn’t start out with 60ft times like that – when I first started I struggled to break under 2 seconds, so experience is definitely a big factor in launching these cars, unlike some have posted before. This was MHK’s first run at the track and he is also new to the car.
Temperature was around 86 when we arrived with Relative Humidity in the high 70’s. Not ideal for drags, but hopefully sufficient to put some debate to rest (or add to it). We each did 5 runs and in each one of them we were able to line up against each other. We swapped lanes after each run to remove lane condition as a variable. There was zero track preparation, until after intermission – only then did they brush it and apply VHT. There was a new 07 Z06 running low 12’s at 115mph so you will get an idea of the track conditions.
Below you will see all 5 time slips. On each time slip we indicated our settings and we also deducted the 1/8 mile time from the ¼ mile time to get the time of the last 1/8 mile - this partly removes the launch as a factor and can give a better idea of the horsepower at work in each car, to help end the horsepower debate. I will let you draw your own conclusions. Here is a race by race summary
Race 1. - we were the 2nd set of cars down the lane and were both caught off guard. Both cars ESP off – suspension in Comfort mode, transmission in Sport mode. Neither of us could do a burnout with ESP off . So tires cold, track greasy. I got greedy off the line and matted it getting a lot of wheelspin but kept it straight – was spinning to the 1/8th where I had to briefly let off and get on it again. Mys slowest time down the ¼ mile to date.
Winner CLS63 13.656 @ 107.41 last 1/8 4.499
Loser CLS55 14.079 @ 107.69 last 1/8 4.644
Race 2. (Only 21 minutes later) MHK left his ESP on by mistake – My ESP was off – still not able to do any burnouts as before (and I have never been able to do them in this car with ESP off – unlike the E55 which would do them all day long with ESP off – with the CLS I have to go to Dyno mode). Let the rear end settle as I came off the line and then fed in the gas. Still horrible times for both – attribute to track and weather conditions.
Winner CLS55 13.204 @ 110.07 last 1/8 4.523
Loser CLS63 13.656 @ 108.85 last 1/8 4.552
Race 3. (32 minutes later) By now we had both put our cars in DYNO mode. I was able to do decent burnout – MHK didn’t. I felt I had an OK launch but I still wasn’t getting the good rear end set. MHK felt he had a bad run. (don’t remember why)
Winner CLS55 13.197 @ 109.06 last 1/8 4.557
Loser CLS63 13.630 @ 106.97 last 1/8 4.601
Race 4. (43 minutes later) We were both in DYNO mode. We were both able to do decent burnouts. I had a good launch – I felt the back settle like normal but the track was still greasy and I wasn’t able to mat it early. Was expecting a decent time
Winner CLS55 12.942 @ 109.30 last 1/8 4.555
Loser CLS63 13.420 @ 108.68 last 1/8 4.555
Race 5. (1hour 20 minutes later – after intermission and track preparation). Both cars in Dyno mode – both did decent burnouts. I knew there would be more grip but still somehow didn’t get on the gas early enough. I had a decent launch but not my best.
Winner CLS55 12.879 @ 109.83 last 1/8 4.535
Loser CLS63 13.502 @ 109.17 last 1/8 4.536
So there you have the results. The CLS55 was the overall winner for sure, which we all expected on the ¼ mile where torque is vital to get out the gates. And my experience at the strip definitely made a difference. (MHK very generously did offer to let me run his car but I wasn’t keen to wait another hour for a last run)
As for the horsepower debate……. as you can see from the trap speeds and the last 1/8 mile times, our cars are almost identical – so either the 55 is making more than quoted (often hinted at) or the 63 is making less than quoted (the debate at hand). I was definitely expecting better trap speeds from the 63 (for instance teh M5 times which are normally 2-3 mph faster than the E55’s through the traps on the same day which effectively demonstrates the approximately 40HP difference – 469 to 500, but this did not happen with the 63.
After our 5th run we decided to do a few more tests on the public road. We did 3 runs rolling at 40-50mph and punched it in 2nd.gear taking it up to just over 100mph (still early Friday evening and neither of us wanted to go to jail, so the debate as to who gets to 150mph first will have to wait for another time). My wife was with me in the car – MHK was on his own. No matter what whoever got drop, stayed ahead. If I got it, I had him. If he got it, he had me. 3 rolling runs and the same result each time.
So in my opinion, being there with no axe to grind, no other intention other than establishing if the cars are markedly different, all I can say for sure, is that in the speeds under 110 mph the 55k motor will win you more races than the 63 motor. As to differences, I don’t see the presence of the extra 40 horses but I also DEFINTELY do not see the 63 having less horsepower than the 55.
All in all a fun time – maybe leaving us with more questions than answers. I know MHK wants to do it again soon, and so do I, but I am going to wait for decent weather so I can hopefully get some respectful times.
Here are the Time Slips

Here are videos of Races 2 through 5 (not enough time to get setup for race 1)
Last edited by Thericker; Apr 17, 2007 at 02:06 AM.
Better yet our own Omeyhomey, has been reporting over at Boringworld..lol Benzworld, that his bone stock w210 E55 runs "ALMOST DEAD EVEN" against a friends moded C5 Z06 from 80-130+
dudes lost it..Here's his ramblings...
. These AMGs are HIGHLY underrated. low speeds are not where our cars shine, 0-60 means nothing in these cars. I totally destroyed an STI at speed (80-130) and same with lotus elise, both of which at low speeds would have beaten me. 0-60 and 1/4 mile in these cars are not what this car was design for, the car is an autobahn stormer, it just starts gettign warmed up at 80mph. The ZO6 guy was blown away by how fast the E55 was and he is modded too. Also his car was shaking and etc at speed and mine was 100% rock solid. AMG engineers reallly do know what they are doing, I have gained a new appreciation for them after having seen what these cars are truly capable of first hand. Learn what your car is truly capable (assuming you have an e55) of then come back to me

Last edited by Thericker; Apr 18, 2007 at 11:04 PM.
i ran a stock c5 z06 in my clk with a little more mods than him (omeyhomie) and he easily pulled me.
i also ran a base c5 conv. and was faster than him, not by that much but i was pulling
Omey has Ricer ittis, needs to go to the ER
Last edited by Thericker; Apr 21, 2007 at 05:04 AM.
But even if I loose it's all good..After watching this I ROTFLMAO and yes wondered if the Vette driver was ???????????????LOL
http://www.youtube.com/watch?v=qARilYMgsLc
But even if I loose it's all good..After watching this I ROTFLMAO and yes wondered if the Vette driver was ???????????????LOL
http://www.youtube.com/watch?v=qARilYMgsLc
I'm embarrassed for them, especially the driver what in the hell is wrong w/that loon? gets his *** kicked repeatedly very badly yet keeps trying???
(well deserved! car has 350hp and dip**** driver! no chance in hell w/that car) runs mid 13's..Infact people like him don't deserve a really fast car like AMG, or a Z06, I'm GLAD he doesn't have one
That was deff an A4 probably w/the worst gears 2.73's...That bike popping the wheelie while racing was excellent!!!Last edited by Thericker; Apr 21, 2007 at 05:39 AM.





