The Core Values the SL Must Uphold

Mercedes-Benz's luxurious roadster, the "SL," has undergone a significant minor change. The new SL was unveiled at the U.S. Los Angeles Auto Show in November 2015. A test drive event for this model was held in February 2016 near San Diego.

The key updates for the SL's minor change include a new engine, a new transmission, and enhanced safety and comfort features. Among these is the Active Body Control, which includes a Dynamic Curve function to suppress body roll during cornering.

The body dimensions are 4.63 meters in length, 1.88 meters in width, and 1.31 meters in height. Pictured is the SL400.

The trunk is equipped with an automatic trunk separator. The trunk can also be opened with a movement of the foot.

The lineup is as follows.

SL 400 (3-liter V6)
SL 550 (4.7-liter V8)
Mercedes-AMG SL 63 (5.5-liter V8)
Mercedes-AMG SL 65 (6-liter V12)

The 3-liter unit in the "SL 400" is newly developed, replacing the 3.5-liter V6 in the current "SL 350"SL 350." Although the displacement is smaller, it has been upgraded in power, hence the increased number in the model name. Maximum output is up by 25 kW (35 hp) to 270 kW (367 hp), and maximum torque has also increased by 20 Nm to 500 Nm. The "SL 550's" 4.7-liter unit produces a maximum output of 430 kW (585 hp) and a massive torque of 700 Nm.

Features LED Intelligent Light System with five functions. The headlamp housings are wider than those of the previous model.

The dashboard is integrated with the beltline of the doors. Four round air vents are a distinctive feature.

Both models are now paired with a newly developed nine-speed automatic transmission. Additionally, the Dynamic Select allows for changes in the car's characteristics, from fuel-efficiency-focused modes to sport modes. This includes control of shift timing, suspension damper characteristics, and steering response.

The exterior has been updated, particularly the front design. The grille is now trapezoidal, and the modified headlamps flanking it have enlarged housings. They also incorporate the LED Intelligent Light System.

"We strive to preserve the long bonnet, short trunk, ample luggage space, and comfortable ride as the SL's identity."

At the test drive event in the U.S., a development representative from the German headquarters explained this. The SL has core values that must be protected, which is why it has maintained a solid position in the automotive market for nearly 60 years through repeated model changes.

Driving the SL 400, I understood what that meant.

The Bang & Olufsen BeoSound AMG sound system features a 900W, 16-channel DSP amplifier with 12 speakers.

The Appeal Lies in Its Comfortable Cruising—Mercedes-Benz SL 400

SL stands for "Super Light" (though it actually originates from German). Mercedes-Benz is mindful of this tradition and extensively uses aluminum components in this model, stating it is "approximately 110 kg lighter than if steel were used."

A combination of a lightweight body and a more powerful engine. In a nutshell, the new "SL 400" is just that. The 3-liter V6 engine, which generates a strong 500 Nm of torque from 2,000 rpm, has ample power for enjoyable driving. The engine's rotation is smooth, and the acceleration felt when revving up to the 270 kW maximum output at 5,000 rpm is exhilarating.

The vario-roof is a hardtop that can be opened and closed automatically.

The SL400 is equipped with a newly developed 3-liter V6 engine. The SL series features a nine-speed automatic transmission.

As Mercedes itself acknowledges, the strength of the SL 400 lies in its maneuverability, meaning its ability to cruise in comfort. While not an inexpensive car, with the current SL 350 priced at 12.48 million yen, the significantly higher price of the SL 550, which sits above it, makes it understandable that many fans want to experience the SL's appeal with the six-cylinder model. This car delivers on that expectation.

The SL 400 I test-drove was equipped with the optional Active Body Control. This system controls the spring and damper characteristics to manage body movements during acceleration, braking, and cornering. It allows the driver to select handling and ride comfort settings according to their preference.

An icon resembling an air outlet is located behind the front wheel arches.

The steering wheel is a flat-bottom type and sporty.

Combined with Dynamic Select, drivers can choose driving characteristics to suit their preferences, from fuel efficiency to comfort or sportiness. Notably, it features the Dynamic Curve function.

The Dynamic Curve function, sometimes abbreviated as "Curve," tilts the vehicle by up to 2.65 degrees within a speed range of 15-180 km/h. Its purpose is to significantly reduce the lateral G-force experienced by occupants during cornering.

"The intention behind adopting this technology is to prevent occupants from experiencing discomfort due to excessive body sway when driving on winding roads," explained the development representative. The "Curve" technology, which prioritizes comfort, is not used in AMG models because it was deemed unnecessary for vehicles with a strong sporty character.

Speaking of sportiness, the Mercedes-AMG models offer a thrilling experience.

Reborn as an Exceptionally Appealing Car—Mercedes-AMG SL 63

There are two AMG models of the SL. Following the brand restructuring concept announced in early 2015, "Mercedes-AMG" is now the official brand name.

The SL models available this time include the Mercedes-AMG "SL 63," powered by a 5.5-liter V8 engine producing a maximum output of 430 kW (585 hp) and a massive torque of 900 Nm. The other is the Mercedes-AMG "SL 65," equipped with a 6-liter V12 engine delivering 463 kW (630 hp) and an astonishing 1,000 Nm of torque. This latter model is available by special order.

The Mercedes-AMG SL63 is powered by a 5.5-liter V8 engine. Mercedes-AMG models feature a twin-blade radiator grille.

The long bonnet possesses a unique beauty. The tire size for the SL 63 is 255/35R19 at the front and 285/30R19 at the rear.

The SL 63 is a superb automobile. The new design, with its trapezoidal grille and bonnet that extends forward, evokes a connection to the AMG GT used as the pace car in F1. This is also true for the AMG models. However, instead of a "diamond grille," it features a design where strong horizontal bars support the three-pointed star.

Simply settling into the more sculpted seats and gripping the steering wheel, wrapped in supple leather that seems to mold to the palm, one can feel the car's latent potential. The SL is an elegant, fully open roadster. Yet, the deep rumble of the V8 evokes the same exhilaration as driving a sports car.

The chassis, with its front-mounted, torque-rich engine, feels incredibly rigid; even when crossing road imperfections with the top down, there's no creaking. The steering responds sensitively to even the slightest input, changing the vehicle's direction. And as the engine speed climbs, the acceleration is rocket-like.

The speedometer and tachometer form a twin-tube look. A TFT multifunction display is laid out between the circular gauges.

The SL 63 is equipped with the AMG Speedshift MCT 7-speed sports transmission.

The test drive route included winding mountain roads, and the car maintained a consistently flat posture. The precise and effective brakes, coupled with the 7-speed sports transmission, allow for swift and accurate downshifts. Even when navigating tight corners, the engine maintains its optimal torque band, which is truly impressive. In essence, it is fast on any road.

Perhaps the presence of the SL, introduced in 2012, had somewhat faded, at least in Japan. However, it has been reborn as an exceptionally appealing car.

The Mercedes-AMG SL 65 is a work of art.

A Speed That Pierces the Heavens—Mercedes-AMG SL 65

The pinnacle of the SL lineup is the Mercedes-AMG SL 65. The SL 63, with its price exceeding 20 million yen in the current model, is...SL 65 Launched in 2012...when the SL 65 was released, its price exceeded 30 million yen. Although the model numbers differ by only two, their positions are quite distinct.

The SL 65 proudly displays "V12" lettering on its side. Additionally, the deep front air dam is adorned with chrome trim. Anyone familiar with the model will recognize it as a special, custom-ordered vehicle just by seeing these details.

The V12 is ultra-smooth, almost unbelievably so. Generating an equally ultra-massive 1,000 Nm of torque from 2,300 rpm, its acceleration, when prompted, is like an arrow released from a bow. The surrounding scenery rushes past at an incredible speed. On U.S. freeways, unlike in Europe, maintaining an otherworldly sense of speed is difficult due to safety considerations related to matching the speed of surrounding vehicles, but its instantaneous responsiveness is astonishingly sharp.

The SL 63 and SL 65 are equipped with five drive modes: "Comfort," "Sport," "Sport Plus," "Individual," and "Race."

The rear of the Mercedes-AMG models features a striking apron with a new diffuser look.

The Active Body Control's posture stabilization likely contributes to the sporty driving characteristics. In corners, the steering wheel response is quick, and from entry to exit, and subsequent acceleration, a speed sensation that pierces the heavens can be enjoyed in every phase.

However, the suspension is firm, and passengers, in particular, will feel road imperfections keenly. This is likely due to the ultra-low-profile tires: 255/35R19 at the front and 285/30R20 at the rear. Still, this is a car with acceleration performance comparable to a supercar, reaching 100 km/h from a standstill in 4 seconds. It's a more than reasonable price to pay for experiencing the SL's potential as a sports car and the depth of its sporting capabilities.

The tire size for the SL 65 is 255/35R19 at the front and 285/30R20 at the rear.

Nappa leather sports seats are standard on Mercedes-AMG models.

"You could say the Porsche 911 is a rival, but there's a line it won't cross, even when approaching it."

This was the response from the development representative when asked about future development intentions after driving the SL 65.

"The SL will not become a Spartan sports car. While the Porsche 911 has recently shown a more comfort-oriented approach, it's true that some customers hesitate between the SL and the 911. However, even with AMG, the SL will not become a sports car. It doesn't burden the driver. We always prioritize the element of being able to drive 1,000 kilometers without fatigue."

Finally, it should be noted that the safety features have been enhanced across the entire SL series.

Abundant Safety Features

The new SL is rich in safety features. This is also a major focus of the minor change.

In addition to radar-based distance warning and brake assist via Adaptive Brake Assist, Active Brake Assist provides automatic braking to reduce the risk of rear-end collisions.

Distronic maintains a safe distance from the vehicle ahead, while Steering Pilot assists in keeping the car centered within its lane. Active Blind Spot Assist warns the driver during lane changes and may apply braking to one side.

The Mercedes-AMG models feature an analog clock with an IWC logo.

The SL 65 is equipped with the AMG Speedshift PLUS 7G-TRONIC.

When lane departure is detected, Active Lane Keeping Assist vibrates the steering wheel to alert the driver and assists in returning the car to its lane by applying braking to one side.

It also features an LED Intelligent Light System with five functions: Highway Mode, Cornering Light, Active Light System utilizing a camera, Roundabout Light function, and enhanced fog lamp function. The significantly updated and powerful SL is scheduled for release in Japan in mid-2016.