Comparing the C63s to a BMW M4




I am going to be trading in a 2017 Porsche 911S. I do really like the 911 but I want to get back into a convertible. I put very few miles on per year and would like to save a few hundred dollars a month in payments but still want to drive a quality sports car.
1) I see at least 1 or 2 M3/M4s during my daily commute. C63s? 2-3 per month.
2) My old 335i with an aftermarket exhaust sounded better than current M3. C63s just sounds so much better than the M.
3) Interior (this can be very subjective though)
An M4 would be an ideal car to own back in 2014 and call it the day but with MB's new design and details in perfection, that has changed my mind and after driving my brother's 2017 C43 AMG and my friends' AMG GTs, I had to rethink the brand and I'm currently considered a convert and custom ordered my c63s and can't wait to receive it.
In my opinion, BMW's make a very high pitch noise from the exhaust while AMG's performance exhaust is engineered to produce the best sound and put a big smile on your face. Interior, quality and technology loaded into Mercedes makes BMW very shameful at the moment.
Plus, I think this might be the last V8 Mercedes is producing so might as well get the best on the table.
I never found my 991 Carrera S comfortable but my C63S is very comfortable. Also easier ingress and egress than in a true sports car like a Porsche or Vette.
So, you're on the right track, IMO and just need to drive each car and see which appeals more to you.
i think you have to drive both cars first. I had 3 years a M4 and I think it is a great car. For me it was the best convertible car you could buy. With some tunes the car is absolutely fast and doesn’t need some fuel. I wondered always how efficient the car is. I drove it 3 years with approx. 600hp and I head never a problem. Now the reason why I change to the c63. THE SOUND OF THE V8. I want a V8 AMG before there aren’t available anymore. The c63 convertible I the smaller car with a textile roof and less space in the back. Only the motor is the reason why I chose this car. I love the sound but it need so much fuel like there is a hole in the tank 😂 but the sound is making this acceptable. But the taste of sound is from
person to person different. I never saw someone who doesn’t love the sound of the c63 but a lot who hate the one of the M4. The c63 isn’t faster than an m4 because it’s much heavier. The optic is also your choice. I like the M4 more but I want this great V8. I drove a few weeks ago a new M4 Competition and this was terrible. I don’t know why but the change the sound more to **** and the car wasn’t fast like my older one. In this case i wouldn’t choose a M4 again.
My opinion:
M4 better car, more space, more efficient, faster especially on the track, hard top roof, more aggressive optic, if you buy a new car the M4 is much cheaper here in Germany! My M4 was full options 105k€ C63 is full 130k€ Facelift. In the M4 its a must have to buy the better interior if not it’s a shame inside
C63 better Sound, better gearbox, in the facelift better or more modern interior, big V8 oh yeah, you don’t need a exhaust for a lot money the original is perfect
Sorry for my English but I hope you understand what I mean 😉
Last edited by achi 3.0; Dec 25, 2018 at 05:21 AM.
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I've owned a naturally aspirated C63, and the C63s Biturbo. The latter was faster but I think I enjoyed the first one more. The 6.2L just sounded insane. The C63s was good, but my main complaint was the turbo lag. Once you get the engine up to power it sounds monstrous. Especially if you have the "s" package with the extra exhaust... OMG downshifting and hearing that thing POP and ROAR... there's nothing like an AMG sound.
Personally I don't like the way the Cabriolet looks, so I think I'm going back to an older natrually aspirated SLK55. I'm not very happy with the AMG biturbo engines...




I've owned a naturally aspirated C63, and the C63s Biturbo. The latter was faster but I think I enjoyed the first one more. The 6.2L just sounded insane. The C63s was good, but my main complaint was the turbo lag. Once you get the engine up to power it sounds monstrous. Especially if you have the "s" package with the extra exhaust... OMG downshifting and hearing that thing POP and ROAR... there's nothing like an AMG sound.
Personally I don't like the way the Cabriolet looks, so I think I'm going back to an older natrually aspirated SLK55. I'm not very happy with the AMG biturbo engines...




Also the pre facelift doesn't have a torque converter. It also has a startup clutch, but overall the 9 speed is faster and more responsive and always starts in first gear. The old transmission started in second gear in comfort mode, slipping the clutch like crazy. I found it very odd. The old transmission is what killed the C63 for me before the face lift. The manual mode is terribly laggy and overall I just couldn't stomach it. The M4 and RS5 have much better dual clutch transmissions, but the new 9 speed is close enough, at least based on what I've seen and the comments from reviewers. I've yet to drive it, but things like the laggy manual mode appear to be a thing of the past, and most importantly it still doesn't have a torque converter as many current performance cars are getting something like the ZF8. Both Audi and BMW are abandoning the dual clutch.
Last edited by superswiss; Dec 26, 2018 at 09:33 PM.




I am going to be trading in a 2017 Porsche 911S. I do really like the 911 but I want to get back into a convertible. I put very few miles on per year and would like to save a few hundred dollars a month in payments but still want to drive a quality sports car.
It’s kind of a (major) downgrade to go from a 911 to a C-class or a 4-series. I am not sure you’ll be happy.
If I were you, I would seriously consider a pre-owned 911 Carrera Cabriolet for similar money to a C63/S or M4. Even if you choose a used 911 that’s more money- say, around $95k-$100k- you are still ahead of the game because the first bulk of depreciation has already occurred on the 911; and Porsche holds its value way better than Merc or BMW.
Alternatively, may I recommend an SL? Go for a pre-owned 2017 (facelifted) SL450 or SL550. I love the 6-cylinder and actually prefer it to my SL63 monster. The SL is a wonderful vehicle, a flagship type vehicle, and much more of a sports car than the C or the 4-series. It’s 182 inches in length, and it features state of the art technology everywhere.
As a current owner of a 2019 AMG C63S coupe, a 2017 SL63, a 2019 SL450, former owner of a few 991 911 models, and a former owner of many BMWs, here’s what I’d say...
It’s kind of a (major) downgrade to go from a 911 to a C-class or a 4-series. I am not sure you’ll be happy.
I disagree. I owned and drove a Carrera S and wasn't happy with it. Even though normally aspirated, the PDK throttle response from a standing start was annoyingly slow almost like turbo lag. The seats were hard and the glare off the windshield was horrible. And as for value for the dollar, I think the C63S is a much better value. If you were to spec a 911 Cabriolet with all the bells and whistles of a new C63S Cabriolet, you'd spend at least $30K more for the 911. And as for retaining value, I got absolutely murdered when I sold mine after 15 months. Finally, don't forget the OP is 61 years old and maybe a pure sports car isn't as important as comfort and ease of ingress and egress, also harder in a sports car like the 911.




As a current owner of a 2019 AMG C63S coupe, a 2017 SL63, a 2019 SL450, former owner of a few 991 911 models, and a former owner of many BMWs, here’s what I’d say...
It’s kind of a (major) downgrade to go from a 911 to a C-class or a 4-series. I am not sure you’ll be happy.
I have to disagree with this, too. There's nothing downgrade about the C63/S vs a 911. Many folks seem to think the 911 is a sports car, which it is actually not. Both the C63/S Coupe and the 911 are GTs, but they strike different balances. There are racing grand tourer versions of the 911 such as the GT3, GT3 RS and GT2 RS (These names come from GT racing), so you can spec these things to a point where they don't really make for a good daily and high speed long distance cruiser, but fundamentally the 911 is still a GT. The C63/S strikes a better balance between a daily, long distance cruiser and sports car. It has more usable rear seats and a more useful trunk for those road trips for example. It compromises the sports car aspects more in favor of practicality and usability compared to a 911. It all comes down to what you gonna use it for, and what kind of balance appeals to you. As far as the M4 is concerned, it is also a better track car than it is a daily. For example for me, the M4 is lacking driving assistance features such as ACC, which are important to me for my long distance road trips to make me less fatigue and risk falling asleep behind the wheel.
Last edited by superswiss; Dec 27, 2018 at 03:47 AM.




I have to disagree with this, too. There's nothing downgrade about the C63/S vs a 911. Many folks seem to think the 911 is a sports car, which it is actually not. Both the C63/S Coupe and the 911 are GTs, but they strike different balances. There are racing grand tourer versions of the 911 such as the GT3, GT3 RS and GT2 RS (These names come from GT racing), so you can spec these things to a point where they don't really make for a good daily and high speed long distance cruiser, but fundamentally the 911 is still a GT. The C63/S strikes a better balance between a daily, long distance cruiser and sports car. It has more usable rear seats and a more useful trunk for those road trips for example. It compromises the sports car aspects more in favor of practicality and usability compared to a 911. It all comes down to what you gonna use it for, and what kind of balance appeals to you. As far as the M4 is concerned, it is also a better track car than it is a daily. For example for me, the M4 is lacking driving assistance features such as ACC, which are important to me for my long distance road trips to make me less fatigue and risk falling asleep behind the wheel.
The 911 is much more of a sports car than the C63. Yes, 911s have grown in size, but at 178 inches and 3200 pounds, that’s sports car territory, even though it’s a 2+2. The C63S coupe/cabrio is 187 inches and 4200 pounds. Let’s not put the two cars in the same category in any way. Whatever the C63 is, the 911 isn’t.
The original poster used the words “quality sports car.” I would never describe my C63S as a quality sports car. I’d probably say, “it’s sporty for a big car,” or “it’s a quality gt.” The 911 is a quality sports car.
The 911 is a much better riding car than the C63. Sorry, but it is. In every way.
The 911 will crush the C63 on any track or on any street, in every performance way. And as I said- it’s a much better riding car. Its road manners are far superior. It doesn’t ride firm. The C63 rides firm.
Build quality. The 911 is a much higher class of car, so you get higher build quality. For example- my C63S coupe has wind noise creeping through the top of the windows at 65 mph on the highway. It’s a c-class.
Practicality. The 911 is a very practical sports car. Front trunk is very sizable, and rear seats offer additional space. The trunk in the C coupe/sedan is very good, but the trunk in the c cabrio is very small. Original poster is looking for a cabrio, so he should definitely look at the trunk size in the C cabrio. It’s tiny. The original poster didn’t talk about cargo or passengers, so not sure if that would be a factor.
If I need to convince anybody that going from a 911 to a c-class with lots of power is a downgrade, then I’ve got quite a task before me.
Last edited by 348SStb; Dec 27, 2018 at 08:38 AM.
Well I have to disagree with this.
The 911 is much more of a sports car than the C63. Yes, 911s have grown in size, but at 178 inches and 3200 pounds, that’s sports car territory, even though it’s a 2+2. The C63S coupe/cabrio is 187 inches and 4200 pounds. Let’s not put the two cars in the same category in any way. Whatever the C63 is, the 911 isn’t.
The original poster used the words “quality sports car.” I would never describe my C63S as a quality sports car. I’d probably say, “it’s sporty for a big car,” or “it’s a quality gt.” The 911 is a quality sports car.
The 911 is a much better riding car than the C63. Sorry, but it is. In every way.
The 911 will crush the C63 on any track or on any street, in every performance way. And as I said- it’s a much better riding car. Its road manners are far superior. It doesn’t ride firm. The C63 rides firm.
Build quality. The 911 is a much higher class of car, so you get higher build quality. For example- my C63S coupe has wind noise creeping through the top of the windows at 65 mph on the highway. It’s a c-class.
Practicality. The 911 is a very practical sports car. Front trunk is very sizable, and rear seats offer additional space. The trunk in the C coupe/sedan is very good, but the trunk in the c cabrio is very small. Original poster is looking for a cabrio, so he should definitely look at the trunk size in the C cabrio. It’s tiny. The original poster didn’t talk about cargo or passengers, so not sure if that would be a factor.
If I need to convince anybody that going from a 911 to a c-class with lots of power is a downgrade, then I’ve got quite a task before me.
Sorry to hear about C6Jeff’s issues with the PDK. Maybe something was off with the car or the model year, but PDK in general is widely regarded as the best automatic in the business.
This is not to bag on the C63S, it is still a fantastic car. It’s a wonderful GT cruiser and German muscle car that can still hold its own dynamically while being very fun to drive. It’s got a V8 and sounds great. It offers a much different flavor to its actual Porsche competitor, the 718, which is a precision sports car.
Last edited by Xec; Dec 27, 2018 at 09:13 AM.




I own the C63S primarily because of the engine. The engine is killer. Also, the C63S oozes with technology and trinkets of AMG-specific aesthetics and engineering, and this spirit bonds me emotionally to the car.
Last edited by 348SStb; Dec 27, 2018 at 10:31 AM.
OP needs to drive both and decide. the cab though seems very much on the heavy side and that might be it's Achilles heel if pushed around, but whether it struggles as much as the M4 convertible as a daily, I can't say. the m4 convertible isn't as dynamically good to drive as the c63s saloon or the m4 coupe. And it sounds awful but is a real good looking car. really really good looking especially in that light blue colour, whatever it is called...



