2018 Mercedes-Benz SL

3.0 SL400 V6 AMG Line G-Tronic+ RWD Euro 6 (s/s) 2dr Roadster (362 bhp)

£32,790

Fair price: within 8% of the typical £35,100 for this model, age and mileage, drawing on 365 adverts of this make and model.

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)
Mileage
32,075 miles
Year
2018
Fuel type
Petrol
Body type
Convertible
Engine
3.0 L
Gearbox
Automatic
Power
362 bhp
Seats
2
CO2
175 g/km
Colour
Black
Doors
2
Driven wheels
Rear Wheel Drive
Gearbox version
G-Tronic+
Engine badge
SL400 V6
Emissions standard
Euro 6

About this car

This 2018 Mercedes-Benz SL AMG Line has covered 32,075 miles. The dealer is asking £32,790, which is £2,310 below our market estimate of £35,100. Our estimate draws on 365 Mercedes-Benz SL adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. Since we first spotted the advert 30 days ago, the asking price has dropped by £1,700. Its MOT is recorded as valid until 26 March 2027. The advertised mileage is consistent with the latest MOT reading. It is advertised by Wynyard Motor Company in Stockton-on-Tees.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 25 September 2026, 30 days ago. Advert duration calculated on 25 October 2026. Net asking-price reduction: £1,700 from the first recorded £34,490. 3 price reductions recorded, the latest observed on 20 October 2026.

Recorded asking prices
Date observedAsking price
25 September 2026£34,490
4 October 2026£33,990
12 October 2026£32,990
20 October 2026£32,790
23 October 2026£32,790

Price and mileage comparison

Estimated market asking price: £35,100. The asking price is £2,310 below this estimate.

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

The pricing calculation includes 365 adverts of this make and model across different ages and specifications.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 26 March 2027. 30,604 miles at the last test.

4 other cars with the same year, trim, gearbox and fuel are for sale from £32,995 to £38,980.

Other matching cars
Asking priceMileage
£32,99547,870 miles
£37,99519,333 miles
£38,50017,825 miles
£38,98018,000 miles

These cars have covered 17,825–47,870 miles, compared with 32,075 miles for this car.

Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. Our estimate adjusts for these differences using the wider market data.

Browse all Mercedes-Benz SL cars for sale · 2018 Mercedes-Benz SL price guide

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Vehicle photos

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