German Icons: 2013 Mercedes-Benz SL

January 4, 2012
2013 Mercedes Benz SL Front Left View
I have to be careful. There are a lot of police around today," said Jurgen Weissinger. He's the chief engineer for the complete Mercedes-Benz sports car line -- and specifically for the highly camouflaged SL550 in which I was a passenger, the model to be revealed at the 2012 Detroit show. That we were rocketing uphill on a winding two-lane mountain road at about 110 mph made his words slightly inappropriate, but since the car felt as if we were proceeding quietly at half that speed, I was relaxed and just enjoyed the ride.
When the SL series started some six decades back with sports racing cars, the chief engineer for the project was Rudolf Uhlenhaut, who had been responsible for engineering Mercedes grand prix cars in the 1930s. He was famously known to be an exceptionally capable driver, as fast as -- or even faster than -- the drivers of the racing team, although he never competed in motorsports. Born in London, he spoke English like a native. Weissinger very much reminds me of the great man, in that he's fluent in English and is as reassuringly masterful on the road as any of the world-champion racing drivers I've ridden with over the years. Weissinger knows the roads in the Swabian Alps south of Stuttgart like a native because he is one, born and raised in the area he likes to use for testing, so his local knowledge removes one more variable from exploration of a car's ability. And this SL's ability is considerable. The ride is amazingly comfortable, worthy of a limousine yet dead flat and free of any hint of wallow or sogginess. "The springs are soft, the damping firm," Weissinger offered, but he had no need to explain; the chassis spoke for itself. The SL is completely new, with a cutting-edge chassis made entirely of aluminum. Massive chilled-cast aluminum structural members are joined with extruded sections by bonding, bolting, MIG welding, and friction-stir welding to make an enormously rigid structure to which all-new suspension elements are fixed. They're aluminum, too.
1949 Rudolf Uhlenhaut Senior Engineer Daimler Benz
You'd expect a considerable reduction in total weight from the change of principal structural material, and the savings is 240 pounds for the body-in-white, despite a more than 20 percent increase in torsional rigidity. The engineering goal seems to have been to make the SL feel as though it's machined from a huge billet, and if that was the intent, it was attained.
The direct-injected aluminum V-8 engine is familiar from the CL550, a twin-turbocharged affair from which 429 hp and an impressive 516 lb-ft of torque is drawn. It sounds wonderful, which is not accidental. "We worked on the sounds the engine makes, tuning the exhaust system so that it is sporty but not loud," said Weissinger, putting his foot down to demonstrate the point. With the seven-speed automatic, ratio changes are extremely smooth, and the sounds tell you what you can't really feel since there are no abrupt changes of thrust as the car accelerates -- smoothly, to 60 mph in only 4.5 seconds.
It was a brisk fall morning, but we were comfortable in the open car, the heating and ventilation system ensuring proper conditions in the cockpit no matter what was happening outside. To that everyday-usability point, the SL is the first to receive Mercedes' new Magic Vision Control windshield wipers. Two separate washer-fluid circuits feed laser-drilled holes on either side of the wiper. When washing the windshield, fluid is sprayed only on the leading edge of the wiper. The result is no glare, very little wasted water, and, since the system sprays only on the downstroke with the top down, there are no unwanted showers for the passengers. The system automatically determines the amount of fluid to use, too -- more in cold, snowy conditions and less in the dry and dust. As an option for cold climates, the entire system can be heated, the reservoir using engine coolant and the hoses and wiper blades warmed by 270 watts of electric heat.
Thoughtful space utilization compelled Mercedes to locate the SL's two 8.5-inch subwoofers in the footwells, using as resonating chambers space that would have otherwise gone unused. In addition to moving the sound stage in front of the passengers, removing the largest speakers from the doors eliminates rattles and allows for a wider cabin.
2012 Mercedes Benz SL Front View
An optional photochromic glass roof can vary from transparent to opaque at the driver's command, and Mercedes claims that the top takes up a relatively small percentage of rear body volume by the standards of a retractable hardtop. The result is increased luggage space and room for the proverbial set of golf clubs. This is decidedly an all-season, everyday roadster.
If at first the SL line of production cars was sharply separated into the fast, racing-derived 300SL Gullwing coupe and the sluggish 190SL boulevard tourer in 1955, by 1963 the two were replaced by a single model that combined sporting ability -- the 230SL won the difficult Spa-Sofia-Liege long-distance rally from Belgium to Bulgaria and back -- and comfort. That combination has been the policy for almost fifty years now. In this R231 iteration, "every comfort and safety feature of the S-class, standard or optional, is available on the SL," says Weissinger.
That the Mercedes-Benz SL continues to combine, in one model, the performance of a supercar with all the attributes of a luxury car is an extraordinary achievement. The SL is unique in these attributes among today's roadsters, and as the most iconic vehicle of the entire Mercedes lineup, the switch to aluminum construction and direct-injected turbocharged engines helps put the SL back at the leading edge of technology -- something that was missing from the car it's replacing. How and whether that translates to an exhilarating driving experience, we'll find out for ourselves in a few months.
2012 Mercedes-Benz SL
Base price
$105,000 (est.)
32-valve DOHC twin-turbo V-8
Displacement 4.7 liters (285 cu in)
Power 429 hp @ 5250 rpm
Torque 516 lb-ft @ 1800 rpm
Transmission 7-speed automatic
Drive Rear-wheel
182.0 in
Width 73.9 in
Wheelbase 101.8 in
Track F/R 63.0/64.0 in
0–60 MPH 4.5 sec
Design Analysis
All of the beauty is in the engineering.
The new SL is a wonderful car. It behaves beautifully, sounds magnificent under full acceleration, and is luxuriously comfortable. Too bad it's so clumsily styled. Each SL iteration traditionally set the styling canon for the entire following Mercedes product line. We can only hope that's not going to be the case now, because from a windshield frame that looks to be part of another car when the top is down to the cluttered and messily composed side profile and bulbous back end, this is a disappointing visual statement. Let's admire the brilliant engineering and hope for an early face-lift. -- Robert Cumberford
1 Inner surface of A-pillar is defined by the hood edge line, putting the windshield into a hole, a curiously clumsy solution.
2 Hood rides above the nominal fender profile, which is extremely old-fashioned.
3 This rolled-under line doesn't seem to have a definite destination and is severely straight, to no clear purpose.
4 Blunt vertical intersection of lamp and hood side is seriously awkward.
5 Outlet does not relate to wheelhouse opening and is punctuated by two inelegant chrome bars aligned with upper edge of surface indent.
6 Like the lances of two jousting knights, these spears clash with the flow of body forms.
7 Giant hole for door handle disrupts the line of the arbitrary rib in the door skin.
8 Fat, tall tail is inelegant but presumably necessary to get all the top panels inside the rounded rump.
9 Negative plane across the back is common to half a dozen European and Asian economy cars. Inspired by a Nissan Altima coupe?
10 More blades, this time disrupting the wheelhouse opening.
11 Is this indent meant to relate to the front fender outlet extension? If so, it misses.
12 Nice outlets for a very nice sound.
Serious Longevity
Introduced at the dawn of the Me Decade and lasting all the way through the Greed Decade, the R107-chassis Mercedes-Benz SL became a cultural icon.
Robert Wagner And Yellow SL Side View
Of the many iterations of the Mercedes-Benz SL two-seat roadster, there are those that are performance legends (the 1958-63 300SLs) and those that are renowned for their beauty (the 230/250/ 280SLs of 1963-71), but none was seared into the public conscious more than the version that followed, the R107-chassis SL that was introduced for 1972 and ended up sticking around through the end of the 1980s.
Mercedes-Benz never intended for the R107 to have a two-decade life span. In fact, work on the car's successor began as early as 1974. But events inside and outside of Mercedes-Benz repeatedly postponed the arrival of the next-generation model. When the U.S. government passed the law ushering in Corporate Average Fuel Economy (CAFE) standards in 1975, Mercedes responded with a rush program to develop a small sedan, which became the 190E, and a new SL was no longer a priority. Later in the 1970s, 190E development, along with the face-lift of the W123-chassis E-class, again pushed back the revised SL. Changes late in the gestation of the next-generation (R129) SL further delayed its arrival, keeping the R107 in production some ten years after it was originally slated to depart.
The amazing thing was, the marketplace didn't care. The car changed very little over time, but the older the R107 SL got, the more buyers liked it. It was introduced with a 230-hp, 4.5-liter SOHC V-8 and a three-speed automatic transmission, but emissions and fuel economy considerations eventually left that engine making just 160 hp. An aluminum-block 3.8-liter V-8, which arrived with the 380SL for 1982, had only 155 hp but did get a four-speed automatic. A much more potent 5.6-liter V-8 replaced the smaller engine in 1986, creating the 560SL, and leather finally became standard, as did antilock brakes and a driver's air bag.
So it wasn't improvements to the SL that increased its popularity. Instead, we have to look at the times in which it lived. The '70s, with its rising tide of divorce and focus on personal fulfillment, had been good for the SL. The '80s, however, were even better. As that decade blossomed, it ushered in a new prosperity -- at least for upper-income earners. Wall Street was humming, and conspicuous consumption became fashionable again. No wonder SL sales took off, despite styling that remained unchanged and prices that floated ever upward. Whereas the '72 debut model stickered for $11,000 ($59,707 in today's dollars), by the end of the model run the '89 SL was priced at $64,230 (equal to $117,524 today).
No other car of that era said "success" like a Mercedes convertible. Lincoln and Cadillac were fast becoming yesterday's news, and the boatlike Eldorado and Continental Mark were old-fogey cars by comparison. Most automakers had panicked about feared rollover standards (which never materialized), so the field of competitive convertibles was largely barren. BMW at that time was only beginning to be seen as a prestige brand, but it had no 6-series convertible. At Porsche, the 911 was still a hard-core sports car (as was the 944 to a lesser extent), and the 928 was available only as a coupe.
Fittingly, the SL featured prominently in movies and television. Oil-industry scion Bobby Ewing drove one on Dallas. Jennifer Hart, the female half of a wealthy detective duo, did as well, in Hart to Hart. But the car's true star turn came when Armani-clad Beverly Hills male prostitute Julian Kay, nee Richard Gere, drove his SL top-down along PCH to the strains of Blondie's "Call Me" in the 1980 thriller American Gigolo.
To drive one today -- in our case, a 1980 model in period-perfect brown on brown -- is to be surprised by the narrow, spartan cabin with manual seats, simple Becker AM/FM stereo (with cassette!), and basic controls. The giant black steering wheel has a spongy, crinkly textured rim and is set way up against the dash; it requires plenty of winding, but steering effort is moderate. The canvas top is raised and lowered manually (and you need a tool to unlatch it from the windshield header), and the rear window is plastic. The 4.5-liter V-8 is fairly anemic and is made more so by the three-speed automatic and a very tall final-drive ratio; combine all that with an ultrastrong accelerator return spring and it means that when you glance down at the huge speedometer -- which tops out at 85 mph -- you're probably going slower than you expected.
At the same time, one can't help but be impressed with the overall level of quality and finish, even in a thirty-year-old example. The way the doors snick closed is as impressive today as it must have been back then. The low beltline and the ultrathin pillars make for excellent visibility. Size-wise, the R107 SL seems like a 4/5-scale version of the current car, but it's not a nimble roadster. It's a regal boulevardier that perfectly suited its audience and helped make it the most popular SL of all time. -- Joe Lorio
The Sincerest form of Flattery
The fourth-generation Mercedes SL inspires a particularly fervid (or is it twisted) imitation.
Real And Fake SL Side View
Typically, when a car company introduces a new look, it debuts on the flagship vehicle and then trickles down the lineup. If that were the case with Mercedes, the R129-chassis SL roadster would have been among the first Benzes to feature longtime Mercedes-Benz design chief Bruno Sacco's 1980s rectilinear styling. Instead, the SL got the new styling last, beaten by the S-class (1981), the 190E (1984), and the 300E (1986) sedans. Although Sacco's design language was a full decade old by the time the R129 SL finally arrived for the 1990 model year, the car was still modern and fresh. Ironically, it was the car's uncommonly long gestation period that allowed it to mature into the timeless beauty we see on these pages.
Except that only one of the cars pictured here is actually a Mercedes-Benz SL. It may be hard to imagine now, but the SL was such a sensation when it ultimately hit showrooms that customers were paying huge premiums over its already stratospheric MSRP -- if they could even get on the waiting list. And what happens when people can't get their hands on what they want? Cheap knock-offs materialize.
Look closely at the two roadsters pictured. It's not as easy as you might think to figure out which is the real SL and which is a union between Mercedes and Chrysler so unholy that it makes the orchestrators of the DaimlerChrysler marriage seem worthy of sainthood. Oscar Nunez, the owner of the fake SL, laughs hysterically as he watches Mercedes-Benz collector and multiple-R129-owner Michael Gouleven react to his creation. "I call it the LeMer," Nunez says -- "Mer for Mercedes and Le for Chrysler LeBaron."
The SL was a rolling tribute to engineering, designed to be the first convertible to provide the same level of safety, convenience, and luxury as a closed car. It featured a fully automatic top that opened at the touch of a button. It had seatbelts mounted directly to the seats and a memory function that returned everything to where you left it -- even the electrically adjusted rearview mirror.
The Chrysler LeBaron, for its part, was more of a rolling tribute to chassis flex. Still, there are plenty of similarities here. These two cars have different owners, and although they had never met before our photo shoot, they live within walking distance, ironically directly across the railroad tracks from one another in South Florida. More important, their cars both have 3.0-liter six-cylinder engines. The Mercedes has a 24-valve in-line six powering the rear wheels. The Chrysler uses a transverse V-6 to spin the fronts.
Watching the twin SLs perform simultaneous burnouts -- one with the front wheels, the other with the rears -- was funny enough to create a roar of laughter from drag-strip onlookers loud enough to almost drown out the LeMer's clattery V-6. The laughter stopped abruptly, however, when the boys realized that one of our lovely photo models had a particularly, um, deep laugh.
Yup, it's that easy to fool people. But this pairing of beautiful cars and models illustrates one point: the Mercedes-Benz SL is, and always was, just as much about style as it is about substance. -- Jason Cammisa


Photo Gallery

2013 Mercedes-Benz SL-Class

SL550 RWD 2-Dr Convertible V8
starting at (MSRP)
4.7L V8
Fuel Economy
17 City 25 Hwy
2013 Mercedes-Benz SL-Class