2021 Mercedes-Benz 300

Overview

• Make: Mercedes-Benz
• Model: 300
• Version: RWD
• Year: 2021
• Mileage: 56,422 miles
• Body: MPV
• Drive: Rear-wheel drive
• Colour: Blue

About this car

This 2021 Mercedes-Benz 300 has covered 56,422 miles. We have tracked this advert for 152 days. Our latest MOT record expired on 29 May 2026. Check the current position with the dealer. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is advertised by K C Car Sales in Dartford. 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

Time on sale

This 2021 Mercedes-Benz 300 has been on sale for at least 152 days.

Price history

AskCar first saw this advert on 10 June 2026 at £48,690. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 9 November 2026: the latest record we hold ran out on 29 May 2026; ask the dealer for the current MOT.

It failed its MOT on 22 May 2025 (offside front tyre has a bulge, caused by separation or partial failure of its structure 245/45R19) and passed later the same day.

Advisories at the latest test: offside rear shock absorbers has light misting of oil.

Mileage at that test: 51,926 miles, which matches the advertised 56,422 miles.