2017 Mercedes-Benz SL

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

£29,995

Fair price: within 8% of the typical £30,239 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: 46,000 miles
Year: 2017
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 2017 Mercedes-Benz SL AMG Line has covered 46,000 miles, around 14,500 more than typical for its age. At £29,995, it is advertised £244 below our estimated market asking price of £30,239. The estimate uses 365 UK dealer adverts for the Mercedes-Benz SL, with adjustments for age, mileage, trim, engine and other specifications. This car was first seen in our listings data 142 days ago. Its MOT is recorded as valid until 7 January 2027. The advertised mileage is consistent with the latest MOT reading. It is advertised by SKS Cars in Milton Keynes.

Stock data from 23 October 2026.

How we estimate prices and check cars

Price history

First seen on 5 June 2026, 142 days ago. Advert duration calculated on 25 October 2026.

Recorded asking prices
Date observed	Asking price
5 June 2026	£29,995
10 July 2026	£29,995
23 October 2026	£29,995

Price and mileage comparison

Estimated market asking price: £30,239. The asking price is £244 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.

Advertised mileage is approximately 14,500 miles higher than typical for a 2017 Mercedes-Benz SL.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 7 January 2027. 42,202 miles at the last test.

8 other cars with the same year, trim, gearbox and fuel are for sale from £19,999 to £38,495.

Other matching cars (up to five, cheapest first)
Asking price	Mileage
£19,999	86,417 miles
£32,990	40,000 miles
£34,900	20,999 miles
£34,990	27,000 miles
£34,990	18,000 miles

These cars have covered 13,450–86,417 miles, compared with 46,000 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 · 2017 Mercedes-Benz SL price guide

Vehicle photos

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