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2015 CLS63 AMG-S vs 2015 E63 AMG-S

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2015 CLS63 AMG-S vs 2015 E63 AMG-S

 
Old 02-10-2015, 02:12 PM
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2015 CLS63 AMG-S vs 2015 E63 AMG-S

We took both cars out on the highway, hit it side by side 4 times from 45 to 60 MPH to 120-140 mph. The CLS would pull ahead a half a car on the jump and then slowly increase the distance. This particular CLS63 AMG-S is faster than the E63 without a doubt. I was surprised as they have the same motor. I didn't expect that much of a difference.

Both drivers were holding the downshift paddle and punching it on go. Both cars are bone stock and within 1500 miles of each other, both cars had about 1/2 tank of gas and 1 driver on board.

fun, fun, fun...
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Old 01-17-2016, 03:32 PM
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Drag coefficient maybe?
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Old 10-26-2016, 04:43 PM
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Bring this topic back. I remember seeing videos where cls63 is pulling on f10 m5s while the e63 couldnt. It really seems like the cls has a better top end. Would drag coefficient really make that difference? Its not like one is a supercar and other is a sedan..
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Old 11-13-2016, 10:42 PM
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If I recall, the original CLS lost to the W211 in almost all races simply because of a slightly increased weight. If the new CLS is beating the AWD W212 AMG, that's impressive.
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Old 12-01-2016, 06:09 AM
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The current CLS uses quite a bit of aluminum to reduce weight. Not sure what these two cars weigh in comparison but given equal power the car that weighs less will have an advantage.
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Old 02-20-2017, 03:55 AM
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2015 CLS63S AMG
Originally Posted by SDRider View Post
The current CLS uses quite a bit of aluminum to reduce weight. Not sure what these two cars weigh in comparison but given equal power the car that weighs less will have an advantage.
this makes no sense to me, the e63 is 50-100kg lighter and e chassis has better aerodynamics with cd of .25 vs .26 for cls.

trap speeds are also about the same for both when stock and tuned.

How is the cls63 pulling on an e63 from a roll by 1+ car lengths? I honestly just don't get how it's possible.

one possibility, did the cls63 here have carbon ceramic brakes/forged amg wheels whereas the e63 had the standard brakes/amg wheels?

that would be some major weight savings on rotational mass that would make all the difference in any type of drag race between those two.

Last edited by Amg63-; 02-20-2017 at 06:41 PM.
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Old 02-20-2017, 11:22 PM
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2015 CLS63S AMG
Originally Posted by Mr.Poodlepants View Post
We took both cars out on the highway, hit it side by side 4 times from 45 to 60 MPH to 120-140 mph. The CLS would pull ahead a half a car on the jump and then slowly increase the distance. This particular CLS63 AMG-S is faster than the E63 without a doubt. I was surprised as they have the same motor. I didn't expect that much of a difference.

Both drivers were holding the downshift paddle and punching it on go. Both cars are bone stock and within 1500 miles of each other, both cars had about 1/2 tank of gas and 1 driver on board.

fun, fun, fun...
the difference should not be so drastic as they are both about same power to weight ratio.

Only other thing I can think of besides the weight savings of CCB or forged wheels on cls is that maybe it was a NON S E vs ClS63 S. Are you sure the E had the S package on it?
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Old 02-21-2017, 01:37 PM
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one more thing could be, is the aero dynamic in CLS has better ventilation and bigger hood space, causing for cooler IATs which will cause to keeping power up better than E
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Old 02-21-2017, 02:18 PM
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Are they geared the same?

were you racing and e63 or e63S?
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Old 02-21-2017, 04:51 PM
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2015 CLS63S AMG
Originally Posted by Ali_E55 View Post
one more thing could be, is the aero dynamic in CLS has better ventilation and bigger hood space, causing for cooler IATs which will cause to keeping power up better than E
i checked into this and the CD rating for e63 is 0.25 vs 0.26 for cls, so e63 has better aero.

also, already on the first run before either car had a chance to get warmed up, cls pulled right away on the E, doesn't make sense why.

The advantage of cls is maybe it has less frontal drag area, but it still shouldn't be making that much difference. Some people here (wolves.creed) are saying cls is .5-1 second faster from 100-200km/h.

I just dont see how it has anything to give it an advantage, let alone a massive one like some are saying.

E is usually lighter by 50-100kg, and has a better coefficient of drag.

Maybe the cls offsets that advantage with less frontal drag area, but still should end up being equal at best. I still think despite this, E should have the advantage here.

also, trap speeds in the quarter mile with equal power/mods on both cls/e are pretty much identical making this increasingly difficult to understand.

Last edited by Amg63-; 02-21-2017 at 05:04 PM.
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Old 02-21-2017, 08:38 PM
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2015 CLS63S AMG
Originally Posted by PeterUbers View Post
Are they geared the same?

were you racing and e63 or e63S?
from what I have researched both have final drive of 2.85 on 4matic models.

Last edited by Amg63-; 02-22-2017 at 12:14 AM.
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Old 02-21-2017, 11:16 PM
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Originally Posted by PeterUbers View Post
Are they geared the same?

were you racing and e63 or e63S?
Never underestimate the power of the PRD.

But in all honesty, I'd chalk it up to power draw (AC on or off, etc), tire pressures, driver & cargo weight. Small differences, extrapolated over those distances add up.
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Old 02-22-2017, 12:17 AM
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2015 CLS63S AMG
PRD lol. Probably had to call the plumber for that to win an E.
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Old 02-26-2017, 12:42 AM
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Originally Posted by Mr.Poodlepants View Post
We took both cars out on the highway, hit it side by side 4 times from 45 to 60 MPH to 120-140 mph. The CLS would pull ahead a half a car on the jump and then slowly increase the distance. This particular CLS63 AMG-S is faster than the E63 without a doubt. I was surprised as they have the same motor. I didn't expect that much of a difference.

Both drivers were holding the downshift paddle and punching it on go. Both cars are bone stock and within 1500 miles of each other, both cars had about 1/2 tank of gas and 1 driver on board.

fun, fun, fun...
I used to own a Sunfire (140hp) and a Malibu (170hp). I raced my wife a few times while I drove the Sunfire and she drove the Malibu and I won every single time. When we switched cars and I drove the Malibu I still beat her (when she drove Sunfire). I weighed 50lbs more than my wife so it wasn't the weight.

when two cars are closely matched I think even a very slight imperceptible jump will make a huge difference. You keep pulling further and further away and because the cars are evenly matched the other car can never make up for the late start.

it would be interesting to switch drivers and see if the result is the same for e63 and cls63.
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Old 02-26-2017, 02:01 AM
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2015 CLS63S AMG
Or do one run and let the E get a slight jump instead for once lol.
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Old 02-26-2017, 08:51 AM
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Or because not all cars come from the factory with identical power output or "as advertised" output.

I bet you could get the same result with identical E63S models or CLS63S models in that they are the exact same car and one pulls on the other.

Combine that with what RobCL said and it is certainly plausible. Everyone wants to compare cars as though they operate in a vacuum.
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Old 02-26-2017, 02:59 PM
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2015 CLS63S AMG
Originally Posted by PurpleHeartAMG View Post
Or because not all cars come from the factory with identical power output or "as advertised" output.

I bet you could get the same result with identical E63S models or CLS63S models in that they are the exact same car and one pulls on the other.

Combine that with what RobCL said and it is certainly plausible. Everyone wants to compare cars as though they operate in a vacuum.
i agree with this and used to think that's all it was, but take a quick look here in this thread at post #81 by wolves.

http://mbworld.org/forums/w212-amg/645441-e63-amg-biturbo-crushes-1-4-mile-4.html

Of course this is just his word of mouth so who knows...

its definitely possible CLS has some kind of aero advantage but we need more data and a larger sample size to be sure of any difference in speed. IMO the E is lighter and should therefore always have the upper hand regardless of all these anecdotal "reports" we keep seeing here.
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Old 04-15-2018, 06:43 PM
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2015 cls63s come with a updated mct transmission,shifts way quicker and manual mode is super responsive vs e class which has the old one
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Old 04-15-2018, 07:28 PM
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Well that settles it. The CLS is the better car. 😈

Quick . Defend your car !!
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Old 04-15-2018, 07:35 PM
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Originally Posted by Ariesfamous View Post
Well that settles it. The CLS is the better car. 😈

Quick . Defend your car !!
edit
did some more digging and i believe the 2015 e63s got the same update
havent tested yet but will find out soon
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Old 04-18-2018, 02:08 PM
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2015 CLS63S AMG
Originally Posted by gzim335 View Post

edit
did some more digging and i believe the 2015 e63s got the same update
havent tested yet but will find out soon
So if both got the same update then its not because of a faster transmission shifting on the CLS63.

Again, my guess is that its because of the frontal drag area being less on the CLS. This is most likely helping it push through a little stronger at higher speeds than the E63.
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Old 05-04-2019, 11:22 PM
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I don’t think the CLS aerodynamic plays a factor here unless they’re both pulling top end races, both cars are pretty much the same. What I’m thinking is it’s a drivers race and the CLS driver always got the hit.

But on the other hand, stock F10 M5 vs stock F06 M6 GC and the M6 takes it by 1.5 - 2 car gap. Also knowing the fact that the M6 GC is heavier and yes they’re both rated same HP/TQ on the paper. To make it short, they’ve been sandbagging power on the heavier platform such as M6 and CLS63.

Last edited by Hsg08; 05-04-2019 at 11:52 PM.
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Old 05-05-2019, 09:55 AM
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2015 CLS63S AMG
Originally Posted by Hsg08 View Post
I don’t think the CLS aerodynamic plays a factor here unless they’re both pulling top end races, both cars are pretty much the same. What I’m thinking is it’s a drivers race and the CLS driver always got the hit.

But on the other hand, stock F10 M5 vs stock F06 M6 GC and the M6 takes it by 1.5 - 2 car gap. Also knowing the fact that the M6 GC is heavier and yes they’re both rated same HP/TQ on the paper. To make it short, they’ve been sandbagging power on the heavier platform such as M6 and CLS63.
the m6GC is actually heavier than the m5, but in the case of the cls if being compared to e63 with pano roof, which is most of them, the cls63 comes out being lighter, and as the roof is lower it does make sense that it has lower frontal drag area. It’s pretty stupid how the m6GC has a carbon roof yet still manages to be heavier than the m5

Even when both are tuned to same power levels the 100-200km/h times have proven to be lower on the cls than the E. there was a thread on here where a group tried it and was about half second quicker in the cls63.
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