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In-depth review

Mercedes-Benz SL-Class Convertible (2012 - 2020) review

Motoring Today Editorial · Updated 24 Jul 2026 · 8 min read· 2012–2020

The Mercedes-Benz SL-Class has long been a symbol of luxury and performance, captivating drivers since its inception in 1952. Fast forward to 2012, and the SL-Class Convertible emerged as a modern icon, blending timeless elegance with cutting-edge technology. Now, as we embrace the electric revolution, the SL-Class is set to make waves once again, promising a thrilling ride for budget-conscious commuters seeking a slice of retro charm.

The Mercedes-Benz SL-Class Convertible (2012 - 2020) is a remarkable blend of luxury, performance, and cutting-edge technology. With its retro icon reborn as an electric variant, it appeals to both traditional enthusiasts and modern eco-conscious drivers. This vehicle is highly recommended for those seeking a stylish and exhilarating driving experience, coupled with the prestige of the Mercedes-Benz brand.

At a glance

hp · Power
563
miles · Range / tank
382
0–60 mph
4s
Running costs
££
Typical finance
From £1952/mo

Motoring.Today. verdict

Best for
  • Exceptional performance and handling
  • Luxurious interior with high-quality materials
  • Iconic design with modern technology
Consider alternatives if
  • Higher maintenance costs compared to non-luxury vehicles
  • Limited rear seat space
  • Some may find the infotainment system complex

Finance snapshot

Typical monthly payment

£1952/month

Based on PCP · 48 months · £11,700 deposit

Best suited for

  • Company Car Drivers
  • Petrol/Diesel Buyers
  • High Mileage Drivers
  • Families

Affordability

Premium

Above average monthly commitment.

Theo's AI summary

The Mercedes-Benz SL-Class Convertible (2012 - 2020) is a remarkable blend of luxury, performance, and cutting-edge technology. With its retro icon reborn as an electric variant, it appeals to both traditional enthusiasts and modern eco-conscious drivers. This vehicle is highly recommended for those seeking a stylish and exhilarating driving experience, coupled with the prestige of the Mercedes-Benz brand.

Best match for

  • Performance enthusiasts
  • Practical families
  • Budget-conscious buyers

Estimated ownership costs

Based on 10,000 miles per year

Fuel

£253/month

Insurance

£190/month

Road Tax

£50/month

Servicing

£60/month

Estimated total

£553/month

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Mercedes-Benz SL-Class Convertible (2012 - 2020) interior and driving experience

With its advanced suspension system and precise steering, the SL-Class Convertible provides exceptional handling. The vehicle's low centre of gravity and well-balanced chassis contribute to a dynamic driving experience, allowing for confident cornering and stability at high speed

Verified spec data

Specifications

Performance

Power

301–621 bhp

0–60 mph

3.9 s

Fastest in range

Top speed

186 mph

Engine

2,996–5,980 cc

Economy & running

Fuel economy

23.0–39.0 mpg

WLTP combined

Miles per £

4.5 mpp

CO₂

169–279 g/km

Insurance group

48–50 of 50

Road tax

£600/yr

Standard VED

Dimensions & practicality

Length

4,631 mm

Width

2,099 mm

Height

1,314 mm

Wheelbase

2,585 mm

Kerb weight

1,785 kg

Seats

2

Doors

2

Figures span the 28 recorded trim variants (2012–2020). Exact figures vary by trim, options and model year — always confirm on the specific car's listing.

Check this SL-Class before you buy

External voices

What the experts say

Parkers

The Mercedes-Benz SL-Class Convertible (2012-2020) is praised for its luxurious interior, strong performance, and advanced technology. However, some critics note that the rear seats are cramped and the boot space is limited, making it less practical for everyday use.

Read full review
Autocar

The SL-Class boasts a stunning design with a sleek silhouette and high-quality materials. Reviewers commend its elegant styling and attention to detail, although some feel the design could be more adventurous.

Read full review
WhatCar

Reliability ratings for the SL-Class are generally positive, with many owners reporting few issues. However, some have experienced electrical problems and high repair costs, which could be a concern for potential buyers.

Ownership intelligence

The real cost of owning one

Finance & affordability

Finance options for the Mercedes-Benz SL-Class Convertible are flexible, with various leasing and loan arrangements available. Potential buyers can explore competitive interest rates and tailored packages that suit their financial needs, making it easier to own this luxury sports car.

Day-to-day running costs

Running Costs for the Mercedes-Benz SL-Class Convertible are competitive for a luxury vehicle of its calibre. While maintenance and insurance may be higher than average, the overall performance and reliability of the car justify the investment. Regular servicing and genuine parts contribute to the longevity of the vehicle, ensuring that it remains in peak condition for years to come.

Charging & fuel

Charging or Fuel costs will vary depending on the engine choice. The petrol variants offer a balance of performance and efficiency, while the electric model provides an eco-friendly alternative with lower running costs. Charging infrastructure is becoming increasingly accessible, making it easier for electric vehicle owners to keep their cars powered.

Heritage

Milestones & history

  1. 2012

    Launch of the new generation SL-Class Convertible

  2. 2016

    Introduction of the AMG variants

  3. 2020

    Launch of the electric variant, marking the rebirth of a retro icon

Read full launch story

The purpose of the Mercedes-Benz SL-Class Convertible has always been to provide a luxurious and high-performance driving experience, combining elegance with sportiness. Since its inception, the SL-Class has evolved significantly, adapting to changing consumer preferences and technological advancements. The latest models reflect a commitment to sustainability while honouring the classic design elements that have made the SL-Class a beloved icon.

Compare with alternatives

The Mercedes-Benz SL-Class Convertible (2012 - 2020) stands out in the luxury convertible segment for its blend of comfort, performance, and advanced technology, competing closely with high-performance rivals like the Porsche 911 and more budget-friendly options like the BMW Z4 and Audi A5 Cabriolet.

Porsche 911 Convertible

Reference only

High-performance luxury sports car known for its iconic design and driving dynamics.

vs features
The Porsche 911 Convertible offers a more engaging driving experience with sharper handling and a more performance-oriented setup compared to the SL-Class, which leans towards comfort and luxury. The tech and cabin quality are also top-notch, but the 911's interior is more driver-focused.
vs price
The 911 Convertible is generally more expensive than the SL-Class, especially when considering performance options and higher trims.
No Motoring Today review

BMW Z4 Convertible

Reference only

A sporty roadster that balances performance and luxury at a more accessible price point.

vs features
The Z4 offers a sportier driving feel than the SL-Class, with a focus on agility and fun. However, the SL-Class provides a more luxurious interior and advanced tech features, making it feel more premium overall.
vs price
The Z4 is typically less expensive than the SL-Class, making it a more budget-friendly option for those seeking a convertible experience.
No Motoring Today review

Audi A5 Cabriolet

Reference only

A stylish and practical convertible that offers a blend of luxury and everyday usability.

vs features
The A5 Cabriolet provides a comfortable ride with a well-appointed interior, but it lacks the performance edge of the SL-Class. The tech features are competitive, but the overall driving experience is more relaxed compared to the SL-Class.
vs price
The A5 Cabriolet is generally less expensive than the SL-Class, appealing to buyers looking for luxury without the higher price tag.
No Motoring Today review

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Mercedes-Benz SL-Class Convertible (2012 - 2020) for sale on Motoring Today

Mercedes-Benz SL-Class Convertible (2012 - 2020) trim & engine line-up

Representative trims and engines recorded for this model.

TrimFuelPower0–60EconomyCO₂Ins.New price
SL 500 Grand Edition 9G-Tronic Plus auto 2dAutomatic · Rear wheel drive · 2019–2020Petrol448 bhp4.2s26.4 - 27.4 mpg235 g/km50£87,385
SL 400 Grand Edition 9G-Tronic Plus auto 2dAutomatic · Rear wheel drive · 2019–2020Petrol361 bhp4.7s28.8 - 29.7 mpg215 g/km48£78,685
SL 400 Grand Edition Premium 9G-Tronic Plus auto 2dAutomatic · Rear wheel drive · 2019–2020Diesel361 bhp4.7s28.8 - 29.7 mpg215 g/km49£82,680
SL 63 AMG Speedshift MCT auto (07/2018 on) 2dAutomatic · Rear wheel drive · 2018–2019Petrol563 bhp4s23.2 - 23.5 mpg268 g/km50£116,975
SL 500 Designo Edition 9G-Tronic Plus auto 2dAutomatic · Rear wheel drive · 2017Petrol448 bhp4.2s30 mpg210 g/km49£95,255
SL 65 AMG Speedshift Plus 7G-Tronic auto 2d autoAutomatic · Rear wheel drive · 2016–2017Petrol621 bhp3.9s23 mpg279 g/km50£173,890
SL 63 AMG Speedshift MCT auto 2d autoAutomatic · Rear wheel drive · 2016–2018Petrol576 bhp4s24 mpg264 g/km50£116,025
SL 500 AMG Line 9G-Tronic Plus auto 2dAutomatic · Rear wheel drive · 2016–2019Petrol448 bhp4.2s25.9 - 26.9 mpg223 g/km50£85,805
SL 400 Edition 9G-Tronic Plus auto 2dAutomatic · Rear wheel drive · 2016Petrol361 bhp4.7s36 mpg175 g/km50£74,700
SL 400 AMG Line 9G-Tronic Plus auto 2dAutomatic · Rear wheel drive · 2016–2019Petrol361 bhp4.7s31 mpg191 g/km50£77,105
SL 400 2LOOK Edition 2d AutoAutomatic · Rear wheel drive · 2015Petrol328 bhp5s36 mpg179 g/km50£77,845
SL 63 (585bhp) 2d Tip AutoAutomatic · Rear wheel drive · 2014–2016Petrol576 bhp4.1s28 mpg229 g/km50£113,315

Specs by trim

SL 400 AMG Sport 2d AutoPetrol Automatic · 2014–2016
Power
328 bhp
0–60 mph
5 s
Top speed
155 mph
Torque
480 Nm
Economy
36 mpg
Range
514 mi
CO₂
179 g/km
Insurance group
50
Road tax
£335
New price
£73,225
SL 63 (585bhp) 2d Tip AutoPetrol Automatic · 2014–2016
Power
576 bhp
0–60 mph
4.1 s
Top speed
155 mph
Torque
900 Nm
Economy
28 mpg
Range
462 mi
CO₂
229 g/km
Insurance group
50
Road tax
£710
New price
£113,315
SL 400 Mille Miglia (417bhp) Edition 2d AutoPetrol Automatic · 2015–2016
Power
328 bhp
0–60 mph
5 s
Top speed
155 mph
Torque
480 Nm
Economy
36 mpg
Range
514 mi
CO₂
179 g/km
Insurance group
50
Road tax
£335
New price
£84,985
SL 500 Mille Miglia (417bhp) Edition 2d AutoPetrol Automatic · 2015–2016
Power
448 bhp
0–60 mph
4.5 s
Top speed
155 mph
Torque
700 Nm
Economy
31 mpg
Range
443 mi
CO₂
212 g/km
Insurance group
50
Road tax
£415
New price
£94,695
SL 500 (455bhp) AMG Sport 2d AutoPetrol Automatic · 2015–2016
Power
448 bhp
0–60 mph
4.5 s
Top speed
155 mph
Torque
700 Nm
Economy
31 mpg
Range
443 mi
CO₂
212 g/km
Insurance group
50
Road tax
£415
New price
£82,490
SL 400 AMG Line 9G-Tronic Plus auto 2dPetrol Automatic · 2016–2019
Power
361 bhp
0–60 mph
4.7 s
Top speed
155 mph
Torque
500 Nm
Economy
31 mpg
Range
511 mi
CO₂
191 g/km
Insurance group
50
Road tax
£305 - £600
New price
£77,105

+ 13 more trim variants

FAQs

What makes the Mercedes-Benz SL-Class Convertible a luxury sports car?
The Mercedes-Benz SL-Class Convertible combines stunning design, powerful engine options, and a luxurious interior with high-quality materials, offering an exhilarating driving experience that appeals to both enthusiasts and everyday commuters.
Is there an electric variant of the SL-Class Convertible?
Yes, the upcoming electric variant of the SL-Class Convertible promises to blend retro charm with advanced technology, catering to drivers seeking sustainability without compromising on performance.
What are the key features of the SL-Class Convertible's interior?
The SL-Class Convertible boasts a luxurious interior with high-quality materials, advanced technology, and a focus on comfort, ensuring an enjoyable driving experience for both short commutes and long journeys.
How has the SL-Class Convertible evolved since its launch?
Since its launch in 2012, the SL-Class Convertible has evolved through various generations, introducing advanced technology and improved performance, while maintaining its iconic design and status in the luxury convertible market.
What is the significance of the SL-Class Convertible's 5-star Euro NCAP rating?
The 5-star Euro NCAP safety rating signifies that the SL-Class Convertible offers exceptional safety features, providing peace of mind for drivers and passengers alike, making it a reliable choice in the luxury sports car segment.

Mercedes-Benz SL-Class Convertible (2012 - 2020) (2012–2020)

From £1952/month