Vs [comparison]:M6 Cabrio vs SL63 AMG

[ateekt]

Yes, but more than 200 kilos...

Thanks anyways...

I agree, it is a lot. But the small things adds up.

Coupe has the light carbon-fiber roof & cab has the heavy motor for the electric-folding-roof!

 

[Karabiner98k]

Why is that the M6 performing better despite the weight and the less powerful & torquy engine ?

The reason is quite simple.It is because of the VERY EFFICIENT GEARING that the M6 has+wider power band.Yes,SL63 AMG has more torque but with that long ratios of the gearbox after 3rd gear and also a long final drive ratio(3.06:1) it can not use it's engine torque as effevtively as M6 does.In fact if you give a simple calculation you will find that even in 5th,6th and 7th gear, M6 can have more torque at it's wheels than the long-geared SL63.For example:
If we consider drivetrain looses zero for both cars we will have:
In 5th gear for M6 we will have: 1.159 x 3.62 = 4.19558 (Overall Ratio in 5th)
For SL63: 1.0 x 3.06 = 3.06 (Overall ratio in 5th)
Now if we multiply the engine torque by overall ratio we will have?
For M6: 4.19558 x 520 = 2181nm
For SL63: 3.06 x 630 = 1927nm
So it is clear that M6 has more torque at it's wheels and it can accelerate better in this gear.
Now if you follow the same for 6th and 7th gear,you see for yourself that the difference becomes even more.In 1st,2nd,3rd and 4th gears,SL63 has a little more torque at it's wheels due to well-chosen ratios and so it maybe a little faster or equal to 100km/h in some road tests(4.5s vs 4.6s or 4.7s vs 4.7s) but after that M6 pulls on it because of the better ratios of the following gears.If M6 was not that heavy it could outrun SL63 from 0-100km/h too.Unfortunately most people only look at engine torque when comparing two cars and that's the reason most of the time they see very unexpected results in flexibility and performance.Short gearing is one of the reasons that make the heavy NISSAN GT-R so fast and flexible too.
It is better to consider all factors and not just the engine torque or horsepower alone.The factor i mentioned here is very important but there are also some other factors such as WHEEL DIAMETER,DRAG COEFFICIENT,TORQUE CURVE,ACCELERATION FORCE,TRACTION and so on that can affect on acceleration and tractability.
I hope my explanations are of some help to you.

 

[m-power]

IMO the two cars are very similar, and I have a hard time choosing

The M6 is such a beast.... while the SL has timeless elegance (though less than the perFL)

I really don't know which to pick

 

[Jabba]

The difference is quite simple to explain:
The M6 is build and designed by robots: the emotions come only while reading the tec specs...
The SL is build and designed by real people... you do not even need a egine inside, just sit in the car and enjoy it. If there comes a 6.3 (sorry: .2) along with, the better!

Do not take me to serious, but there is a truth in this: the 6 lacks soul, like thess japanese 2f 2f cars: The are good, they are fast (maybe faster) but they will be forgotten.


But the 6 looks damm good from outside! THX M Power! The FL SL... uuuh, those lights, but it looks still good.

 

[m-power]

Jabba, especially the M cars are engineered with passion and with actual so many man hours.

The rest of the car maybe lacks some passion (relatively), but I hope the next generation will be better.

I don't agree though that the SL is very different from this aspect.

 

[Karabiner98k]

SL63 easily, better looking and you won't have to fool with a goofy transmission on public roads where 99 percent of driving takes place. At the track yeah the M6, too bad that isn't where I'd be if I picking one of these cars.


M

Still goofy transmission performed better than a Slush-box.

 

[Merc1]

Still goofy transmission performed better than a Slush-box.

And your point is what? I couldn't care less since I wouldn't plan on driving on a track. In the real world, SMG sucks.

And also, a fact check might be in order for you since the SL63's gearbox isn't a "slushbox" as the description is used.

M

 

[Karabiner98k]

And your point is what? I couldn't care less since I wouldn't plan on driving on a track. In the real world, SMG sucks.

And also, a fact check might be in order for you since the SL63's gearbox isn't a "slushbox" as the description is used.

M

Yes you are right about everyday driving but i think those who buy M6 or any other M car don't plan to use it only for every day driving

and allocate a lot of time for track.In MBWORLD I have heard some people complain about MCT transmission of SL63 too but generally if

you care about everyday driving(as you said 99% of driving) there is not any difference between a 630i and M6 in everyday driving

because in a traffic jam both are equally fast.In fact buying an M for everyday driving is stupid and instead buying a series version(like

630i) and saving money is a lot wiser.Unfortunately BMWs have become much complicated recently but those who spend some time get

the hang of it and then you can customize your car the way you want it to be.I just don't like 7-speed transmission in SL63 because of

heavily overdriven ratios of 6th and 7th gear which have a negative effect on tractability at low-RPM,i prefer the car with better

tractability at low-RPM and high gears and i think this is also an important factor in everyday driving.Compare SL63 with M6 in 6th gear

and you will see that M6 has better tractability.For example 80-120km/h in 6th gear for M6 cabrio is just 7.6s while SL63 needs 9.3s

which is 1.7s slower though it has 110NM more torque.If you do the same in 7th gear for both the difference become about 4.0s which

is a huge difference,therefore i prefer the car with better tractability because it needs fewer downshifts in overtakings and when you

put your foot down you get a good response from the engine.In this class,Ferrari california is also a very nice car and more agile and

fun to drive than SL63 and M6 because it is much lighter.I prefer it to M6 and SL63 because i just don't like very heavy cars.

 

[Zafiro]

I've tried SMG and it definitely don't suck, please, but I agree its not as smooth as a DSG. But SMG is old tech and it wont come back.

 

[Merc1]

Yes you are right about everyday driving but i think those who buy M6 or any other M car don't plan to use it only for every day driving

and allocate a lot of time for track.In MBWORLD I have heard some people complain about MCT transmission of SL63 too but generally if

you care about everyday driving(as you said 99% of driving) there is not any difference between a 630i and M6 in everyday driving

because in a traffic jam both are equally fast.In fact buying an M for everyday driving is stupid and instead buying a series version(like

630i) and saving money is a lot wiser.Unfortunately BMWs have become much complicated recently but those who spend some time get

the hang of it and then you can customize your car the way you want it to be.I just don't like 7-speed transmission in SL63 because of

heavily overdriven ratios of 6th and 7th gear which have a negative effect on tractability at low-RPM,i prefer the car with better

tractability at low-RPM and high gears and i think this is also an important factor in everyday driving.Compare SL63 with M6 in 6th gear

and you will see that M6 has better tractability.For example 80-120km/h in 6th gear for M6 cabrio is just 7.6s while SL63 needs 9.3s

which is 1.7s slower though it has 110NM more torque.If you do the same in 7th gear for both the difference become about 4.0s which

is a huge difference,therefore i prefer the car with better tractability because it needs fewer downshifts in overtakings and when you

put your foot down you get a good response from the engine.In this class,Ferrari california is also a very nice car and more agile and

fun to drive than SL63 and M6 because it is much lighter.I prefer it to M6 and SL63 because i just don't like very heavy cars.

Yet at the end of the day and all of that, a M6 or a SL63 are daily drivers for most people in the U.S. Don't know about other places. Middle aged guys with lots of money buy these cars, the younger, racier types don't on average. I guess all the people that live in the real world are stupid then because I see M6s on regular roads all the time. Please don't make it out to be some type of track day car bought by track hounds because it isn't. M3 yeah, but M5 and M6 you're moving closer to everyday people/drivers and for that purpose SMG sucks big time.


M

 

[PanterroR]

IMO the two cars are very similar, and I have a hard time choosing

I don't - SL63 in a heartbeat, despite V10... It must have more than that, but it doesn't...

 

[klier]

And your point is what? I couldn't care less since I wouldn't plan on driving on a track. In the real world, SMG sucks.

Aaah, ignorance is bliss??? How many times did you drive SMG? Or did you just remember one or two negative reviews by retarded journalists?
I have owned SMG, and imo it's really great. Just for the downshifting alone, I'd take it again....

SL63 is old. M6 is old. In the end I honestly wouldn't take either. M3 or C63 please

 

[Karabiner98k]

Aaah, ignorance is bliss??? How many times did you drive SMG? Or did you just remember one or two negative reviews by retarded journalists?
I have owned SMG, and imo it's really great. Just for the downshifting alone, I'd take it again....

SL63 is old. M6 is old. In the end I honestly wouldn't take either. M3 or C63 please

It is better not to argue with MERC1 anymore.Whatever you say he says his own words because he is a big Mercedes fan and because M6 outperformed SL63 in every category he wants to ruin M6 because of SMG problem and in this way shows us that SL63 has the upper hand! but transmission is not something the car is all about.I prefer to have M6 because of much better tractability in high gears and low revs at the expense of goofiness of it's transmission.

 

[HighestOfHigh]

^So is your opinion suppose to be better then Merc1?

Just like you like the M6 other people may prefer the SL63. IMO the SL63 is a far better car design and engineering wise. I don't even see the M6 as even being on the SL's level. Sure both are great cars in their own rights, but everyone has a right to their opinion.

 

[Karabiner98k]

^So is your opinion suppose to be better then Merc1?

Just like you like the M6 other people may prefer the SL63. IMO the SL63 is a far better car design and engineering wise. I don't even see the M6 as even being on the SL's level. Sure both are great cars in their own rights, but everyone has a right to their opinion.

Forget about my opinion but Sorry you seem to be more biased than Merc1.If SL was a good engineered car it should be at least faster considering more power more torque and less weight.Whether you see M6 as being on the SL's level or not,M6 still is a best-selling car and has it's own fans.It is a simple fact:BMW is better in performance and tech engineering(engine-gearbox-handling and etc.) and MERCEDES is better in comfort.I don't know why still so many people in the world argue about this simple and clear fact.I think it is better not to compare these two cars which belong to two different categories.
By the way i prefer the Ferrari California to both of them.

 

[Zafiro]

Come on guys, don't make it personal. We all have our biases.

M6 is a sportier choice than SL63 but a M6 Cabrio dont fit my view what a M is about. If want a convertible then SL63 is a better cruiser than a M6 Cabrio. SL63 also looks better. I pick SL63 because the magnificent V10 is in the wrong car.

 

[HighestOfHigh]

Forget about my opinion but Sorry you seem to be more biased than Merc1.If SL was a good engineered car it should be at least faster considering more power more torque and less weight.Whether you see M6 as being on the SL's level or not,M6 still is a best-selling car and has it's own fans.It is a simple fact:BMW is better in performance and tech engineering(engine-gearbox-handling and etc.) and MERCEDES is better in comfort.I don't know why still so many people in the world argue about this simple and clear fact.I think it is better not to compare these two cars which belong to two different categories.
By the way i prefer the Ferrari California to both of them.

Again, no need to preach to me! I'm going to believe what I believe.

If you believe the M6 is the best thing since bake bread then so be it. My vote is with the SL (especially after driving it).

 

[Human]

M6 no doubt, though I have ENORMOUS respect for the SL...two German Brutal Power Machines

 

[Karabiner98k]

Again, no need to preach to me! I'm going to believe what I believe.

If you believe the M6 is the best thing since bake bread then so be it. My vote is with the SL (especially after driving it).

I don't preach to anyone,i just want to tell the truth:BMW is better dynamic and performance wise,Mercedes is better luxury-wise.That's it,quite simple.I respect your opinion HighestOfHigh but you want to say M6 is totally useless which is not true.

 

[ree]

I don't preach to anyone,i just want to tell the truth:BMW is better dynamic and performance wise,Mercedes is better luxury-wise.That's it,quite simple.I respect your opinion HighestOfHigh but you want to say M6 is totally useless which is not true.

Well, I love the design of the 6-series, but want to the elegance and comfort of a SL 63 AMG - that's why I'm in love with the Alpina B6 S Convertible. The best combination of both cars shown here.

And I don't think, that HOH wanted to say, that the M6 is "totally useless"! But compared to the SL, the M6 has less daily usability…
…those discussions are always conducted by personal opinions/feelings and preferences (with data and without)! Especially with those high perfomance vehicles it is difficult to say, that's the better car or the other one!
And no one would buy such cars just because it has better perfomance data…