2020 Mercedes-Benz C Class 4.0

Overview

• Make: Mercedes-Benz
• Model: C Class
• Version: 4.0 S Auto RWD Euro 6 2dr (502 bhp)
• Year: 2020
• Mileage: 23,300 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 4.0 litres, 502 bhp
• Gearbox: Automatic
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 261 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 23,300 miles, this 2020 Mercedes-Benz C Class has covered about 24,700 fewer miles than other 2020 Mercedes-Benz C Class cars. The dealer is asking £49,950, which is £12,602 above the AskCar estimate of £37,348. To work out the AskCar estimate, we analyse UK dealer adverts for 4,524 Mercedes-Benz C Class cars across different ages and specifications. We have tracked this advert for 134 days. The government's MOT record matches its advertised mileage. It is advertised by Exclusive Autos in Watford. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 9 November 2026.

How we estimate prices and check cars

Price

Above the going rate: £12,602 (33%) over the AskCar estimate of £37,348.

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 4,524 priced Mercedes-Benz C Class adverts across different ages and specifications, as of 9 November 2026.

A 2020 Mercedes-Benz C Class with the 4.0 petrol engine is typically advertised at £44,000: the median of the 11 for sale on AskCar, as of 9 November 2026.

Time on sale

This 2020 Mercedes-Benz C Class has been on sale for at least 134 days.

Price history

AskCar first saw this advert on 28 June 2026 at £49,950. Its asking price has not changed.

Price changes recorded:

• 28 June 2026: £49,950
• 2 July 2026: £52,950
• 23 September 2026: £49,950

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 9 November 2026: valid until 6 July 2027.

It failed its MOT on 18 June 2026 (front brake pad(s) less than 1.5 mm thick; rear brake pad(s) less than 1.5 mm thick) and passed 5 days later, on 23 June 2026.

Advisories at the latest test: front tyre worn close to legal limit/worn on edge both.

Mileage at that test: 23,186 miles, which matches the advertised 23,300 miles.

Advertised mileage is about 24,700 miles lower than the median mileage of a 2020 Mercedes-Benz C Class on AskCar.