Car and Driver Showdown: 2013 BMW M6 Convertible vs. Jaguar XKR-S vs. Mercedes-Benz SL63 AMG vs. Porsche 911 Carrera S Cabriolet!

About halfway between Los Angeles and San Francisco, somewhere near the Piedras Blancas lighthouse where the sea otters bob and the elephant seals tussle in the slimy kelp just off the shoreline, the Santa Lucia Mountains take a step back from the water’s edge, leaving a rolling, doughy apron of greens and browns. On January days when the gray doesn’t hang low and the squalls don’t roll in on the crest of a sniping wind, the fog can settle with damp permanence and bleach everything the color of statuary.

In 1865, a man named George Hearst came and spent some of his mighty takings from the Comstock Lode on a cattle ranch here. It must have been a sunny day, because when the sun is out in San Simeon, heaven has no equal. Hearst found his refuge on these hillsides, and his son and heir, William Randolph, would eventually build a towering concrete château big enough to be labeled a castle.

It is a fact of American life that the victors get the spoils. Ranches and castles are two, and a vehicle to access them quickly and in sublime comfort is another. At one time the Hearst property here encompassed 250,000 acres, so, likewise, we were not tame in our appetites. Our four convertibles live in the very upper reaches of ?luxury, just where it scrapes the bottom of the exotic realm.
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GermanNutGermanNut - 4/29/2013 11:33:05 AM
-3 Boost
Once again a BMW "M" vehicle, this time the high-end M6 Convertible no less, gets heavily criticized by Car and Driver for its poor driving experience.

"However, you can also do better. Even with all its many driver-adjustable settings for steering effort, throttle response, and suspension stiffness, it’s impossible to make the M6 fully at home on winding roads. The steering is duller than the others, and the body wallows and leans more as the mass pushes the suspension around. An overriding sense of isolation meant the clearest feedback we got came from our drivers, complaining that they felt less confident driving hard into corners, unsure if the grip would hold."

"Certain details seem haphazard. Where the top’s great spinnaker of canvas meets the body behind the cockpit, it sits on a thick, black-plastic coaster that clutters the bodyline when the top is down. All of the cars except the Jag have wind blockers. In the M6, the squat, rectangular rear window can be motored up separately to serve as such, giving the open M6 an especially quiet cabin at freeway speeds. But it looks bucktoothed and totally uncool. Nothing on a car this expensive should be uncool."

"There’s an artificiality to the M6, from its soft-then-hard brake pedal to the way the engine sounds more like interstellar gas eruptions than internal combustion. We know BMW plays engine sounds through the audio system’s speakers, and the M6 is the only car here in which the engine note gets quieter and more distant with the top down. Hmph!

"The M6 is not horrible, but it’s not really an M, either. It’s too girthy, too soft, and too ersatz. If only it were as good at generating emotion as it is at generating test numbers. BMW needs a separate badge for these ultrafast luxury barges, the M5 and M6, to separate them from the M3. Until then, we’ll just rate it a “U” for uninspiring."

Clearly, the BMW M6 Convertible is nothing like what enthusiasts have come to expect of a high-performance and high-priced "M" BMW. Most troubling, though, is the fact that the same criticisms can be applied to the M5 Sedan and M6 coupe in addition to the M6 Convertible.

BMW better hope its M6 Gran Coupe doesn't receive the same criticisms when it faces off with the potent Audi RS7 and Mercedes-Benz CLS63 AMG. With the same basic underpinnings as the M6 Coupe and M5 Sedan, the M6 Gran Coupe will need to be transformed through some miracle if it is to win a comparison test against its capable rivals.


BMW4me4everBMW4me4ever - 4/29/2013 1:05:47 PM
+4 Boost
really? The M6 and the Jaguar are the only 'Gt" cars in the test. The SL63 is a roadster and should be lighter & handle better. The Porsche is stricly a performance car. What is amazing is that the BMW seats 4 and is as fast or faster than all the cars it competed with. It is almost a foot longer than the Porsche and the Mercedes.


GermanNutGermanNut - 4/29/2013 1:40:08 PM
-3 Boost
Why should the SL63 AMG be lighter, BMW4me4ever?

"Like Hearst Castle itself, the M6 strikes us as a noble project that got entirely out of hand. It’s just so enormous. And heavy. Yes, we know it’s a 5-series sedan underneath, and it is handsome. But how can the M6 weigh 368 pounds more than the Benz, which has an entire forced-air furnace system in its seats and a team of robots aboard to fold its metal top like the Hôtel du Louvre’s housemaids working over a bed?"

Straight-line performance is just one dimension of performance and, unfortunately for BMW, the BMW M6 Convertible does not have xDrive all-wheel drive. With that said, you can bet the M6 Gran Coupe won't be able to keep up with the Quattro-powered RS7 and 4Matic CLS63 AMG. Considering the M6 Convertible fails in everything other than straight-line acceleration, the M6 Gran Coupe without AWD is pretty much bound to lose in every performance category.



BMW4me4everBMW4me4ever - 4/29/2013 2:51:24 PM
+3 Boost
But how can the M6 weigh 368 pounds more than the Benz? The Sl63 is 11" shorter, with a smaller wheelbase and track. Physics would say it should be lighter. The porsche is 15" shorter. That is going to be a huge difference in weight and handling. Yet the BMW is within .02 of the Mercedes SL63 and had better skidpad figures than the SL63.

To compare these 4 cars is a bit ridiculous. Only 2 are Gt's. The Mercedes is a roadster & the Porsche is a sports car that seats 2. Where is the Audi R8 in the comparison with the porsche and benz? How bout the Maseratti compared to the BMW and Jaguar.

I love how you bring up the smaller S7 and CLS63. The BMW Gran Coupe M6 is only 4" longer than both and yet will blow the doors off both. The real comparison will be against the Panamera Turbo ...




Yonder7Yonder7 - 4/29/2013 6:41:41 PM
0 Boost
Sorry for you man CLS63 and S7 are by far better than the M6GT, numbers are saying that. But I agree with you SL and M6 are completely different cars, SL is smaller, However SL have a lot more equipment than the M6 and also a heavy retractile roof, so in fact is amazing how a car with so may gadgets is so light. a Real Match for the M6 should be the E coupe AMG Dressed but there is no such car right now and BMW never has been able to build an SL counterpart successfully, no because they can not , if not cause their philosophy. Now it is worst cause they are loosing ground cause they are trying too hard to be better than MB. They forgot the sport car that they WERE able to build better than anyone ....no, they are no better as sport cars and still behind MB as Luxury cars. MB Was the best on Luxury but now they are trying so hard in the sport line, that they are loosing the essence of the luxury car. ...and the Winner is: AUDI. There was a time were no one was able to argue about the M supremacy and no one compares AUDI against BMW or MB...now the bimmerfans need to spend a lot of time explaining what BMW engineers did wrong. CL is a Dino but M6 is almost in that category of weight but without ALL the luxury and goodies of the CL. SPORT and LUXURY are not compatible. All numbers say so.


BMW4me4everBMW4me4ever - 4/29/2013 7:08:12 PM
+2 Boost
Huh? How is the CLS63 Amg and the S7 far better than the M6GT? Aside from the M6GT being a much larger car than either, it will still out handle and out accelerate both cars. The main competition for the car is really the Masseratti and the Porsche. Have you sat in the back of the CLS or the S7? If so, are you taller than 5'7"? It is not possible. Let alone we know the M6 coupe performs faster than the


pcar4evrpcar4evr - 4/29/2013 8:50:26 PM
+1 Boost
4.3 sec/12.7 sec for the 991 with a stick shift? Pretty pathetic. Shows how important the dual clutch transmission is to people who can't manage three pedals


Terry989Terry989 - 4/30/2013 1:41:19 AM
-1 Boost
BMW4me4evr - Since when was a "GT" ever defined as a car that that can seat 4 people? If you read the review, you can see that they gave a lot of extra points to the M6 for having the largest back seat, yet it still brought up the tail end the test. In the final test results it only wins in two categories - - - largest fuel tank, and fastest 5 - 60MPH from a rolling start (only fast if you have some momentum moving its massive bulk). While it is the 0-60MPH times that everyone focuses on, it is the speed through the slalom that shows how a car can handle and ultimately how fun and safe it is on anything but a straight stretch of interstate, and the M6 comes in dead last in this category. I argue that the new 911 is no longer a pure sports car, but rather a fast, luxurious GT car. If you are going to call yourself "The Ultimate Driving Machine", and slap an expensive "M" label on it (Motorsports), you damn well better perform, and the M6 just doesn't. Also note that not only was this 911 hampered by a manual gear box, it is also the slowest of the dozen 911 variants. I have no doubt the M6 is a stunning highway cruiser, just leave it at home if your trip includes a winding road.


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