2020 Mercedes-Benz C Class 2.0 C300d AMG Line Premium

Version: 2.0 C300d AMG Line Premium G-Tronic+ RWD Euro 6 (s/s) 2dr Cabriolet (242 bhp)

Price: £21,850. Fair price: £1,156 (5%) over the AskCar estimate of £20,694, our expected asking price for this car from its model, age, mileage and specification, drawing on 4,537 priced Mercedes-Benz C Class adverts on AskCar as of 30 October 2026.

AskCar lists 4,734 used Mercedes-Benz C Class from 2,267 UK dealerships, as of 30 October 2026.

Overview

Make
Mercedes-Benz
Model
C Class
Trim
AMG Line Premium
Version
2.0 C300d AMG Line Premium G-Tronic+ RWD Euro 6 (s/s) 2dr Cabriolet (242 bhp)
Mileage
32,871 miles
Year
2020
Fuel type
Diesel
Body type
Convertible
Engine
2.0 L
Gearbox
Automatic
Power
242 bhp
Seats
4
CO2
138 g/km
Colour
Grey
Doors
2
Driven wheels
Rear Wheel Drive
Gearbox version
G-Tronic+
Engine badge
C300d
Emissions standard
Euro 6

About this car

This 2020 Mercedes-Benz C Class AMG Line Premium has covered 32,871 miles, around 15,600 fewer miles than is typical for its age. Priced at £21,850, it is advertised £1,156 above the AskCar estimate of £20,694. To work out the AskCar estimate, we analyse UK dealer adverts for 4,537 Mercedes-Benz C Class cars across different ages and specifications. The asking price is now £1,143 lower than when we first recorded the advert 21 days ago. Its recorded MOT is valid until 8 October 2027, and its advertised mileage is consistent with the latest MOT reading. The seller is Group 1 Automotive Mercedes-Benz Of Derby, based in Derby.

Stock data as of 30 October 2026.

How we estimate prices and check cars

Price history

AskCar first saw this advert on 9 October 2026, 21 days ago. Price reduced by £1,143 from £22,993 since AskCar first saw it. 2 price reductions recorded, the latest seen on 30 October 2026.

Recorded asking prices
Date observedAsking price
9 October 2026£22,993
10 October 2026£22,295
30 October 2026£21,850

Price and mileage comparison

Fair price: £1,156 (5%) over the AskCar estimate of £20,694.

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 4,537 priced Mercedes-Benz C Class adverts across different ages and specifications, as of 30 October 2026.

Advertised mileage is about 15,600 miles lower than the median mileage of a 2020 Mercedes-Benz C Class on AskCar.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT: valid until 8 October 2027. 32,699 miles at the last test.

Other matching cars

47 other 2020 Mercedes-Benz C Class AMG Line Premium automatic diesel cars are for sale at UK dealers from £10,995 to £25,000, as of 30 October 2026.

The 5 cheapest:

The 47 matching cars have covered 10,668 to 127,735 miles, compared with 32,871 miles for this car.

Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. The AskCar estimate adjusts for these differences.

Browse all Mercedes-Benz C Class cars for sale · 2020 Mercedes-Benz C Class price guide

More like this

Photos

50 photos of this car are on its AskCar page.

How to contact the dealer and its opening hours are on this AskCar page.

As of 30 October 2026, AskCar lists 580,490 cars and vans from 12,695 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.