2018 Mercedes-Benz C Class

3.0 C43 V6 AMG G-Tronic+ 4WD Euro 6 (s/s) 2dr Cabriolet (362 bhp)

£18,380

Good value: £2,854 under the typical £21,234 for this model, age and mileage, drawing on 4,589 adverts of this make and model.

Overview

Make
Mercedes-Benz
Model
C Class
Trim
AMG
Version
3.0 C43 V6 AMG G-Tronic+ 4WD Euro 6 (s/s) 2dr Cabriolet (362 bhp)
Mileage
74,000 miles
Year
2018
Fuel type
Petrol
Body type
Convertible
Engine
3.0 L
Gearbox
Automatic
Power
362 bhp
Seats
4
CO2
194 g/km
Colour
Black
Doors
2
Driven wheels
Four Wheel Drive
Gearbox version
G-Tronic+
Engine badge
C43 V6
Emissions standard
Euro 6

About this car

The advertised mileage for this 2018 Mercedes-Benz C Class AMG is 74,000 miles. Our estimated market asking price is £21,234. This car is advertised at £18,380, which is £2,854 below that figure. To estimate its market asking price, we analyse UK dealer adverts for 4,589 Mercedes-Benz C Class cars across different ages and specifications. Since we first spotted the advert 148 days ago, the asking price has dropped by £1,615. The last MOT shows 75,185 miles, more than the advert. This is worth checking with the dealer. MOT records show an expiry date of 11 June 2027. It is advertised by Gillman Motors in Dartford.

Stock data from 22 October 2026.

How we estimate prices and check cars

Price history

First seen on 28 May 2026, 148 days ago. Advert duration calculated on 23 October 2026. Net asking-price reduction: £1,615 from the first recorded £19,995. 3 price reductions recorded, the latest observed on 29 July 2026.

Recorded asking prices
Date observedAsking price
29 May 2026£19,995
30 June 2026£19,500
7 July 2026£19,500
27 July 2026£18,580
28 July 2026£18,580
29 July 2026£18,380
30 July 2026£18,380
22 October 2026£18,380

Price and mileage comparison

Estimated market asking price: £21,234. The asking price is £2,854 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 4,589 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 10,000 miles higher than typical for a 2018 Mercedes-Benz C Class.

Mileage concern: the advertised mileage is below the last MOT reading; ask the dealer to explain.

MOT

MOT valid until 11 June 2027. 75,185 miles at the last test.

9 other cars with the same year, trim, gearbox and fuel are for sale from £17,495 to £35,990.

Other matching cars (up to five, cheapest first)
Asking priceMileage
£17,49592,000 miles
£17,99097,000 miles
£19,49064,000 miles
£22,99580,000 miles
£22,99544,555 miles

These cars have covered 24,000–97,000 miles, compared with 74,000 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 C Class cars for sale · 2018 Mercedes-Benz C Class price guide

How to contact the dealer, its opening hours and the cheaper cars like this one are on this AskCar page.

Vehicle photos