2017 Mercedes-Benz SL

AMG Line Auto RWD Euro 6 2dr

£35,100

Above the going rate: £4,398 over the typical £30,702 for this model, age and mileage, drawing on 367 adverts of this make and model.

Overview

Make: Mercedes-Benz
Model: SL
Trim: AMG LINE
Version: AMG Line Auto RWD Euro 6 2dr
Mileage: 20,999 miles
Year: 2017
Fuel type: Petrol
Body type: Convertible
Gearbox: Automatic
Seats: 2
Colour: White
Doors: 2
Driven wheels: Rear Wheel Drive
Emissions standard: Euro 6

About this car

With 20,999 miles on the clock, this 2017 Mercedes-Benz SL AMG Line has done roughly 10,500 fewer miles than a typical 2017 Mercedes-Benz SL. Its asking price of £35,100 is £4,398 above our estimate of £30,702. We use UK dealer asking prices, including 367 Mercedes-Benz SL listings, and account for the car’s age, mileage and specification. Since we first spotted the advert 44 days ago, the asking price has dropped by £700. The seller is Marshall BYD Northampton, based in Northampton.

Stock data from 21 October 2026.

How we estimate prices and check cars

Price history

First seen on 8 September 2026, 44 days ago. Advert duration calculated on 22 October 2026. Net asking-price reduction: £700 from the first recorded £35,800. 4 price reductions recorded, the latest observed on 16 October 2026.

Recorded asking prices
Date observed	Asking price
8 September 2026	£35,800
18 September 2026	£37,000
25 September 2026	£36,000
2 October 2026	£35,700
9 October 2026	£35,300
16 October 2026	£35,100
21 October 2026	£35,100

Price and mileage comparison

Estimated market asking price: £30,702. The asking price is £4,398 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 367 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 10,500 miles lower than typical for a 2017 Mercedes-Benz SL.

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
£29,995	46,000 miles
£32,990	40,000 miles
£34,990	27,000 miles
£34,990	18,000 miles

These cars have covered 13,450–86,417 miles, compared with 20,999 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

Similar cars for less

2017 Mercedes-Benz SL, 18,000 miles, £34,990, Whitstable

Dealer

Marshall BYD Northampton, Northampton. Across the dealer network: 129 branches, 4,129 cars for sale.

Dealer postcode: NN1 5NS.

Dealer opening hours

Monday: 08:30-18:00
Tuesday: 08:30-18:00
Wednesday: 08:30-18:00
Thursday: 08:30-18:00
Friday: 08:30-18:00
Saturday: 08:30-17:00
Sunday: 10:30-16:30