The Mercedes-Benz SL has always been a symbol of open-top luxury and head-turning style. The 2013 SL550 Convertible continues this tradition, wrapping potent performance and refined comfort in a package that demands attention. From the vibrant Mars Red paint job of our test model to the throaty rumble of its V8 engine, the SL550 is a car that makes a statement. It’s the kind of vehicle that draws envious glances and sparks conversations, even from those who aren’t typically car enthusiasts. One observer even described the SL550 as “sex on wheels,” a testament to its undeniable allure.
Classic Roadster Design Meets Modern Luxury
The 2013 Mercedes-Benz SL550 Convertible embodies classic sports car proportions with a modern Mercedes-Benz design language. The long hood, dominated by an oversized three-pointed star emblem, flows gracefully into a steeply raked windshield and a short rear deck. The optional 19-inch AMG five-spoke wheels on our test car filled the arches perfectly, further enhancing the car’s athletic stance. Hood vents, reminiscent of the higher-performance SL63 AMG, added a touch of aggression, leading to inquiries about whether this was indeed the AMG model – a question answered with a slightly snobbish, “No, it’s only the SL550.” The two-seater cabin sits snugly beneath the low roofline, emphasizing the car’s sporty and intimate nature.
Convertible Comfort and Practicality
As a roadster, the “SL” designation inherently promises a convertible top, and the 2013 SL550 delivers with a power-retractable hardtop. In true Mercedes-Benz fashion, the operation is a smooth, almost theatrical display of engineering, folding away in approximately six seconds. While top-down motoring is the SL550’s raison d’être, practicality hasn’t been entirely forgotten. Trunk space with the top down is understandably reduced due to the roof storage mechanism. A retractable cover manages cargo to prevent interference with the roof operation, still allowing enough space for a couple of carry-on bags. With the top raised, this cover can be moved, expanding cargo capacity considerably. Accessing the trunk with the top down is a multi-step process involving automated lifting of the trunk lid and roof panels, followed by manual manipulation of the storage compartment cover. While slightly elaborate for simply stowing a bag, this system maximizes cargo space when the roof is up.
The interior of the SL550 is surprisingly spacious, easily accommodating taller occupants. Motorized adjustments for the seats and steering wheel, along with memory positions and an “Easy Exit” function, ensure personalized comfort. Small storage compartments and a parcel shelf offer space for personal items. A minor ergonomic quirk is the placement of the cupholders, located far back on the center console, almost suggesting a “no drinks” policy in this luxurious machine.
Mercedes-Benz has thoughtfully equipped the SL550 for comfortable open-air driving in various conditions. A motorized windscreen minimizes wind buffeting at higher speeds. The Airscarf system, blowing warm air onto occupants’ necks, extends the top-down driving season into cooler weather. Automatic climate control adjusts seamlessly for convertible driving, and heated and ventilated seats further enhance comfort. With these features engaged and the side windows raised, top-down driving remains enjoyable even on chilly mornings. The cabin remains remarkably quiet, even at freeway speeds, allowing for easy conversation and hands-free phone calls. Massage seats with adjustable bolsters add another layer of luxury, making long drives in the SL550 a genuinely relaxing experience.
For those times when the weather dictates a closed roof, the SL550 transforms into a refined coupe. With the hardtop in place, the cabin becomes remarkably quiet, almost tomb-like. The optional Magic Sky Control glass roof adds another dimension to the experience. This electrochromic glass panel can switch between transparent and opaque at the touch of a button, blocking UV and IR light while allowing visible light to filter through, offering a unique “tint-on-demand” feature.
Potent Performance and Agile Handling
Under the hood of the 2013 SL550 lies a 4.6-liter biturbo V8 engine, a powerplant that is as impressive technically as it is in its performance delivery. Featuring direct-injection and a start/stop system, this engine balances power with relative efficiency. While EPA fuel economy figures of 16 mpg city, 24 mpg highway, and 19 mpg combined might not be class-leading, they are respectable for an engine producing 429 horsepower and 516 pound-feet of torque.
Our test vehicle was equipped with the optional Active Body Control (ABC) adaptive suspension, a $4,090 upgrade that elevates the SL550’s handling and ride quality. ABC offers Comfort and Sport modes, but its functionality extends beyond simple damper adjustments. At lower speeds, it can raise the car by approximately two inches to clear obstacles. At higher speeds, it automatically lowers the ride height to improve aerodynamics and stability. Simultaneously, the system constantly adjusts damping at each wheel for optimal balance between comfort and responsiveness. While the system’s operation can be monitored on the COMAND display, the real-world benefit is a noticeable improvement in both ride comfort and handling prowess.
In Comfort mode, the SL550 delivers an effortlessly smooth driving experience. The abundant power allows for relaxed cruising around town, with the engine barely breaking a sweat. ABC effectively minimizes the impact of road imperfections, contributing to a refined and comfortable ride. The start/stop system, while generally unobtrusive, can be deactivated for smoother progress in stop-and-go traffic.
On the open road, the SL550’s performance truly shines. While the standard transmission programming in “Econ” mode can be slightly hesitant to downshift for quick acceleration, switching to “Sport” mode transforms the car’s character. Gears are held longer, downshifts become more responsive, and the full force of the V8 engine is readily available. The chassis feels more agile in Sport mode, though the adaptive suspension still maintains a composed ride. Steering wheel-mounted paddle shifters offer manual control, but the Sport mode’s intelligent automatic shifting is generally well-suited to spirited driving. Active bolsters in the seats can be adjusted to provide additional lateral support during cornering, though they can feel intrusive at lower driving intensities.
The 2013 Mercedes-Benz SL550 Convertible feels most at home on winding roads. The combination of its powerful engine, sophisticated suspension, and balanced chassis makes it a joy to drive through corners. Stability control remains unobtrusive, allowing for confident and engaging driving dynamics.
Infotainment and Technology: A Mixed Bag
While the 2013 Mercedes-Benz SL550 excels in many areas, its infotainment system, particularly the COMAND Online feature, is a notable weak point. The COMAND interface, while familiar to Mercedes-Benz owners, can feel cumbersome and dated. Navigating menus and accessing basic functions requires multiple steps, involving dial twisting, scrolling, and button presses. The system’s complexity has grown over time without a corresponding improvement in organization or user-friendliness.
Voice control offers some respite, providing accurate address input, but its functionality is limited. Navigation is standard, with traffic data, but lacks advanced features like satellite imagery. Audio sources are plentiful, including a DVD changer, media interfaces, SD card reader, satellite radio, and Bluetooth streaming, feeding a Harman Kardon Logic7 surround-sound system. This system, featuring “FrontBass” technology, delivers excellent sound quality, though the optional Bang & Olufsen system takes audio fidelity to an even higher level.
The new COMAND Online connectivity suite, including web-based services like Google Local Search, Yelp, and Facebook, is where the system truly falters. Performance is painfully slow, with lengthy loading times for menus and functions. Simple tasks, like initiating a Google search, can take an unacceptably long time, especially in a fast-paced digital world. The system’s limitations while driving further diminish its utility.
The inconsistent behavior of the COMAND controller’s “back” button within the COMAND Online interface adds to the frustration. Instead of stepping back within a menu, it often jumps back to the main COMAND Online screen, requiring users to navigate through slow-loading menus repeatedly. Compared to contemporary infotainment systems from competitors, COMAND Online feels sluggish and underdeveloped. Its limited integration with core functions like navigation and its overall slow performance make it a less than compelling feature.
Conclusion: A Brilliant Roadster Despite Tech Shortcomings
The 2013 Mercedes-Benz SL550 Convertible is, ultimately, a remarkable automobile. While the COMAND Online system is a significant drawback, it doesn’t overshadow the car’s fundamental strengths. The SL550 delivers a compelling blend of potent performance, luxurious comfort, and timeless style. Its powerful V8 engine, refined ride, and engaging handling make it a true pleasure to drive. Beyond the driving experience, the SL550 offers a range of safety and convenience features, including Mbrace telematics, lane-keeping assist, pre-collision warning, blind-spot monitoring, and parking assistance systems.
For buyers who prioritize driving enjoyment and open-top luxury over cutting-edge infotainment technology, the 2013 Mercedes-Benz SL550 Convertible remains a highly desirable choice. Starting at $105,500, with our test car reaching $124,345 with options, it represents a significant investment. However, for those seeking a luxury roadster that delivers on both style and substance, the SL550 offers a feeling that justifies its price.
2013 Mercedes-Benz SL550 Roadster – Tech Specs
| Feature | Specification |
|---|---|
| Model | 2013 Mercedes-Benz SL550 Roadster |
| Trim | n/a |
| Powertrain | 4.6-liter biturbo V-8, RWD, 7-speed automatic |
| EPA Fuel Economy | 16 city, 24 highway, 19 combined mpg |
| Observed Fuel Economy | n/a |
| Navigation | Standard, HDD-based |
| Bluetooth Phone Support | Standard |
| Disc Player | 6-disc DVD changer |
| MP3 Player Support | Aux, USB, Bluetooth, iPod |
| Other Digital Audio | SiriusXM, HD Radio |
| Audio System | 10-speaker Harman Kardon Logic7 5.1 Surround |
| Driver Aids | Rear camera, proximity sensors, blind-spot monitor, etc. |
| Base Price | $105,500 |
| Price as Tested | $124,345 |
