2018 Mercedes-Benz SL 3.0 SL400 V6 AMG Line

Overview

• Make: Mercedes-Benz
• Model: SL
• Trim: AMG Line
• Version: 3.0 SL400 V6 AMG Line G-Tronic+ RWD Euro 6 (s/s) 2dr Roadster (362 bhp)
• Year: 2018
• Mileage: 19,333 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 2 seats
• Engine: 3.0 litres, 362 bhp
• Gearbox: Automatic (G-Tronic+)
• Drive: Rear-wheel drive
• Colour: Red
• CO2: 175 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

The advertised mileage for this 2018 Mercedes-Benz SL AMG Line is 19,333 miles. Priced at £37,995, it is advertised £144 above the AskCar estimate of £37,851. To work out the AskCar estimate, we analyse UK dealer adverts for 365 Mercedes-Benz SL cars across different ages and specifications. This car was first seen in our listings data 128 days ago. Its advertised mileage matches the government's MOT record. It is advertised by Parkway Specialist Cars in Mansfield. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 6 November 2026.

How we estimate prices and check cars

Price

Fair price: £144 (under 1%) over the AskCar estimate of £37,851.

The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.

It draws on 365 priced Mercedes-Benz SL adverts across different ages and specifications, as of 6 November 2026.

Time on sale

This 2018 Mercedes-Benz SL has been on sale for at least 128 days.

Price history

AskCar first saw this advert on 1 July 2026 at £37,995. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 9 June 2027.

It has had 7 MOTs. The latest, on 10 June 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 19,016 miles, which matches the advertised 19,333 miles.

Similar cars

3 other 2018 Mercedes-Benz SL AMG Line 3.0 petrol automatic convertibles are for sale at UK dealers, from £33,490 to £38,500, as of 6 November 2026.

The 3 closest to this car in mileage:

• 2018 Mercedes-Benz SL AMG Line, 3.0 petrol convertible, grey. Mileage: 18,000 miles. Price: £37,980, the same price as this car. Dealer: Auto100.Co.Uk in Sutton in Ashfield. AskCar page: https://askcar.co.uk/car/mercedes-benz-sl-2018-69de28c78bb2
• 2018 Mercedes-Benz SL AMG Line, 3.0 petrol convertible, silver. Mileage: 17,825 miles. Price: £38,500, £505 more than this car. Dealer: Penguin Cars in Shrewsbury. AskCar page: https://askcar.co.uk/car/mercedes-benz-sl-2018-6424f2cb9f9a
• 2018 Mercedes-Benz SL AMG Line, 3.0 petrol convertible, black. Mileage: 32,075 miles. Price: £33,490, £4,505 less than this car. Dealer: Wynyard Motor Company in Stockton-on-Tees. AskCar page: https://askcar.co.uk/car/mercedes-benz-sl-2018-478dd338ba3d