Mercedes SLC

Comfortable roadster with a folding metal roof

This is the average score given by leading car publications from 4 reviews
  • Good looks
  • Smart interior
  • Impeccably built
  • Rivals are more fun to drive
  • Small boot
  • V8 engine no longer available

£30,495 - £46,360 Price range


2 Seats


36 - 70 MPG


The Mercedes SLC is the successor to the SLK convertible and comes with a fresh design and new engines. It rivals convertibles such as the Audi TT Roadster, BMW Z4 and the cheaper Mazda MX-5. Think of the SLC as a facelift and name change of the old SLK – because the car shares many components with that car.

The SLC’s engine range is pretty good for a compact roadster – petrols include a 181hp 2.0-litre petrol and a sporty 362hp 3.0-litre V6 in the range-topping SLC 43 AMG, which replaces the SLK 55 AMG. Those looking for diesel power get the 64.1mpg SLC 250d model.

In terms of driving we expect it to be similar to the SLK – with more of a focus on comfort than out-and-out sportscar thrills and the standard nine-speed automatic gearbox ensures smooth, and effortless, acceleration. The SLC 43 AMG is a different beast and should be sharper thanks to adaptive dampers with selectable settings.

The only major differences inside compared to the old car are a bigger seven-inch (up from 5.8 inches) infotainment screen that is easy to use, plus a redesigned steering wheel. Otherwise you still get a two-seater cabin and a folding metal roof that increases security and refinement when closed.

As expected from a Mercedes, equipment levels are generous – leather upholstery, air-conditioning and cruise control are standard, while notable options include £1,150 adaptive LED headlights and £675 park assist.

If this sounds like the ideal car for you, our Mercedes SLC colours guide can help you pick the perfect colour.

Inside, the high-quality cabin is starting to show its age compared to rivals such as the Audi TT Roadster. New trim choices, a sports steering wheel and Nappa leather sports seats are just about the only things different to the old SLK.

The screen for the Comand infotainment system is 7.0-inches (up from 5.8 inches) and a software update brings new technology such as Apple CarPlay. Basic satellite navigation is a £595 option, while a more advanced version with internet access costs £2,095. A rotary dial instead of a touchscreen makes it easier to operate on the move.

Mercedes SLC passenger space

Space for two is as much as you’d expect from a two-seater convertible and the driving position is low and sporty. The seats focus on holding you in place rather than pampering you, but according to reviewers they’re good at both.

A cool option is Magic Sky Control – it costs £1,995 and allows you to adjust the amount of light that comes into the cabin by changing the transparency of the panoramic roof.

Mercedes SLC boot space

The SLC is a small roadster, so boot space isn’t huge, but at 335 litres with the roof up it can easily fit weekend luggage for two, plus it’s the largest in class leading the BMW Z4 (310 litres) and Audi TT Roadster (280 litres). Unsurprisingly, the load capacity diminishes significantly with the roof down, but you can still fit a soft bag or two.

As a smaller alternative to the SL roadster, the SLC retains its focus on comfort, but feels sportier than its bigger brother. It still suffers from the firm low-speed ride that afflicted the SLK, but on the open road the tweaks carried out with the name-change are evident.

The direct steering, combined with the limited body roll provide the driver with a sense of confidence. It’s still not a patch on the near-perfect Porsche Boxster, but according to critics, the SLC is more fun than the Audi TTS Roadster and sharper than the Jaguar F-Type.

Mercedes’ Dynamic Select system is standard on all but the entry level SLC 200 and allows the driver to select between Comfort, Sport, Eco and Individual driving modes. They change a range of the car’s characteristics including steering wheel weight, throttle response and, in the case of the AMG model, engine sound.

Mercedes SLC 43 AMG

The SLC 43 AMG is the first of the new range of AMG models with the revived 43. It sits in between AMG Line trim and full-fat AMG models. The SLC 43 drives sharply and it’s easy to place on the road, but ultimately it’s not as entertaining as a Boxster S. The Porsche’s 100kg-lower weight and mid-engined layout give it the dynamic edge. However, as a cruiser, the Mercedes turbine-smooth six-cylinder engine gives it a touch of sophistication that the droney four-cylinder engine in the Porsche can’t match.

A pleasingly broad choice of engines is available for the SLC with only the entry-level petrol getting a six-speed manual. The rest of the range comes equipped with an excellent nine-speed automatic that, with its smooth shifts, suits the roadster perfectly.

Mercedes SLC petrol engines

Kicking off the range is a 2.0-litre four-cylinder turbo with 184hp called the SLC 200. It’s fairly cheap to run with a combined fuel economy figure of 43mpg (3mpg more with the automatic), yet still rapid enough 0-62mph taking seven seconds.

If you’re after more performance you can have SLC 300 with the same engine tuned to 245hp. It has the same combined fuel economy as the auto SLC 200, but a much quicker acceleration time of 5.8 seconds. Road tax for both engines ranges between £130-£145 per year.

The 362hp 3.0-litre twin-turbocharged V6 in the SLC 43 AMG is already used in other models including the GLE SUV, but the (relatively) light roadster body helps get the best of it. In the SLC, the V6 sounds very pleasing with an addictive howl during acceleration and racecar crackles from the exhaust when off-throttle. A 0-62mph time of 4.7 seconds makes the SLC 43 faster than a Jaguar F-Type S, but slower than a Boxster S – combined fuel consumption of 36mpg is about average for the class.

Mercedes SLC diesel engine

Some might shun the idea of a diesel-powered roadster, but the impressive running costs will be a big lure to others. The headline fuel-economy figure of 70mpg is easy to achieve, because the SLC is light and aerodynamic. Moreover that number is 10mpg better than in the diesel Audi TT Roadster. Yes, the engine itself is the ageing 2.1-litre unit that is now being phased out in other models (replaced by a much quieter 2.0-litre), but at idle the familiar diesel rattle is well suppressed and a 0-62mph time of 6.6 seconds is impressive – and three-tenths quicker than an entry-level BMW Z4 petrol.

The SLC is too new a model to be crash tested by independent safety organisations, but it’s a premium product and we expect it to be just as safe as the rest of the Mercedes range. Fitted as standard are safety systems such as Active Brake Assist which can brake the car autonomously, Attention Assist, which alerts the driver when it senses signs of fatigue and an active bonnet, which protects pedestrians in accidents.

In tune with its newfound sporting aspirations, the SLC comes with a choice of two trim levels that look more aggressive as you move up.

Mercedes SLC Sport

The entry-level SLC ticks all the boxes for a luxury compact roadster – the stylish 17-inch alloys look suitably sporty, the driver grips a flat-bottomed leather steering wheel and sits in sports seats upholstered in man-made Artico leather, while a high-quality stereo and climate control make sure the bare essentials are catered for.

Mercedes SLC AMG Line

The AMG Line is perfect if you want your SLC to have more aggressive looks to match its sporty drive, but don’t necessarily need the extra power of a proper AMG model. New bumpers and side skirts, along with larger 18-inch alloys, separate the SLC AMG Line from the lesser Sport. The interior gets less of a makeover with contrasting red stitching on the leather upholstery and AMG floor mats standing out at a glance.

Mercedes SLC 43 AMG

The top-of-the-range AMG model gets its own unique front splitter, rear diffuser and spoiler along with 10-spoke 18-inch AMG alloy wheels with AMG-branded brakes behind them. Inside, the seats are upholstered in finer leather and the dashboard inlays are carbon-grain aluminium.


While an Audi TT Roadster might feel more modern inside and a Porsche 718 Boxster might be more fun to drive on the limit, the Mercedes SLC retains its proven formula of a sporty drive and a secure metal folding roof. It’s now also better kitted out, sharper to drive and more refined than ever before. The SLC might not be a class leader in terms of thrills, but as a safe choice it’s one of the best ones out there.

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