New 2021 Mercedes SL spied again ahead of spring reveal

Wraps slowly coming off new Mercedes SL weeks before official unveiling

The new Mercedes SL has been spied on camera once again, this time wearing a light disguise as it prepares for its world premiere this spring.

Compared with the first official images of the newcomer, these spy shots peel back the disguise even more, revealing how the new SL will have a strong AMG influence flowing through its DNA – unsurprising, given that Mercedes performance division has been made solely responsible for the car’s development. 

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We can see at the front that the new SL will get a Panamerica-style grille as seen on the AMG GT, while the quad exhaust setup is a dead giveaway as to the AMG-developed powertrains that the new SL will be made available with. 

The long bonnet and cab-reward silhouette can clearly be made out, which will allow Mercedes to make the SL a genuine 2+2. We can see the new fabric folding roof in its entirety for the first time. 

2021 Mercedes SL: Engines and performance

AMG-badged high-performance variants will be offered alongside the core SL line-up, which is expected to start with a 3.0-litre straight-six petrol model badged SL 43. V8 power is coming, too, and it’s also likely that the new SL will embrace hybrid technology, not only in the form of 48-volt mild-hybrid electrification, but also with the possibility of plug-in power.

Former AMG boss Tobias Moers (now Aston Martin CEO) told Auto Express that AMG will look to offer a hybrid version of every model Mercedes sends its way, and the SL – as a heavier sports car focused on touring – could well be a natural fit for a weighty, electrified powertrain with a huge power output. It could potentially receive the SL 73 badge, and act as a flagship model with more than 800bhp.

While AMG will ensure that the next SL comes with chassis and suspension tuning aimed at improving the model for drivers, it will remain more of a cruiser than a performance car like the AMG GT. 

2021 Mercedes SL: Design and exterior styling

Core to the next SL will be its styling, as previewed in our exclusive images. Gorden Wagener, the chief design officer for Daimler AG, told us: “Each SL is a mirror of its decade. If you think of the fifties and you think of the beauty ideal during that time, it was opulence. Then you move into the sixties, models got skinny, skirts got shorter, and when you look at the Pagoda this is a super-light car, and again represents the taste of the time.”

Spy shots and the first official images have revealed that the newcomer will take on a more aggressive look than before, with bold AMG design themes, a 2+2 seating layout and a fabric convertible roof. Robert Lesnik, Mercedes director of exterior design added: “Gorden mentioned all those models through decades, but they keep something in common, that is a typical proportion – a front mid-engined car, with a long bonnet, small cabin, cab backward design.

“The last SL was designed for a certain trend at the time, which was a retractable hard-top. That was, at the time, state of the art, and everyone wanted to have one. It’s something that we will not do with the next one,” Lesnik explained.

2021 Mercedes SL: History and sports cars 

In 2019, sports cars contributed to slightly more than one per cent of Mercedes’ total sales worldwide; with around 28,400 cars sold. That’s a rise of 48 per cent over 2018, but by the firm’s own admission, the AMG GT line-up accounts for most of that, with the compact SLC roadster now banished from the line-up and full-size SL dwindling in importance.

While the SLC now has no future, the brand’s decision to build the new SL with AMG hinges on the shared use of a new lightweight, aluminium-intensive platform that will eventually go underneath the next AMG GT.

Speaking to Auto Express before his switch to Aston Martin, former AMG boss Tobias Moers explained how the project was developing: “This is a programme that’s really intense,” he said. “The new SL aligned with maybe the next generation of GT.

“I think it’s time to change the attitude of SL a little bit and bring back a bit of the history of this touring DNA of SL – make it sportier, and other things.”

Timeline: six generations of Mercedes SL

W198 (1954-63): Iconic Gullwing lasted for three years before Roadster replaced it. Four-cylinder 190 SL was the affordable alternative.

W113 (1963-1971): ‘Pagoda’ model came with a removable hard-top. 230, 250 and 280 models all came with six-cylinder engines.

R107 (1971-1989): As well as a roadster, Mercedes produced the four-seat SLC coupé up until 1981. This was the first SL with a V8.

R129 (1989-2001): SL moved into the nineties with V12 power introduced for the first time. AMG versions also appear.

R230 (2001-2011): Introduced folding hard-top roof first seen on the SLK, as well as adaptive body control and other hi-tech aids.

R231 (2012-2020): Outgoing SL was a heavily updated version of the R230 that used an all-aluminium body for the first time.

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