2018 Mercedes-Benz SL

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

£38,500

Fair price: within 8% of the typical £37,988 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
17,825 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
Silver
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 17,825 miles. At £38,500, it is advertised £512 above our estimated market asking price of £37,988. The estimate uses 365 UK dealer adverts for the Mercedes-Benz SL, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 67 days ago. Its asking price has since fallen by £499. That may be worth mentioning if you discuss the price with the dealer. Its MOT is recorded as valid until 21 May 2027. The advertised mileage is consistent with the latest MOT reading. It is advertised by Penguin Cars in Shrewsbury.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 19 August 2026, 67 days ago. Advert duration calculated on 25 October 2026. Net asking-price reduction: £499 from the first recorded £38,999. 1 price reduction recorded, the latest observed on 30 September 2026.

Recorded asking prices
Date observedAsking price
19 August 2026£38,999
30 September 2026£38,500
23 October 2026£38,500

Price and mileage comparison

Estimated market asking price: £37,988. The asking price is £512 above 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 21 May 2027. 15,086 miles at the last test.

4 other cars with the same year, trim, gearbox and fuel are for sale from £32,790 to £38,980.

Other matching cars
Asking priceMileage
£32,79032,075 miles
£32,99547,870 miles
£37,99519,333 miles
£38,98018,000 miles

These cars have covered 18,000–47,870 miles, compared with 17,825 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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