2021 BMW 3 Series 3.0 M340d MHT

Overview

• Make: BMW
• Model: 3 Series
• Version: 3.0 M340d MHT Auto 4WD Euro 6 (s/s) 4dr (335 bhp)
• Year: 2021
• Mileage: 40,400 miles
• Fuel: Diesel, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 3.0 litres, 335 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 160 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 40,400 miles on the clock, this 2021 BMW 3 Series has done roughly 14,400 fewer miles than a typical 2021 BMW 3 Series. Priced at £29,995, it is advertised £266 above the AskCar estimate of £29,729. The AskCar estimate draws on 6,822 BMW 3 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. It first appeared in our advert records today. We checked its advertised mileage against the government's MOT record, and they match. The seller is NG9 Motors, based in Nottingham. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 8 November 2026.

How we estimate prices and check cars

Price

Fair price: £266 (under 1%) over the AskCar estimate of £29,729.

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 6,822 priced BMW 3 Series adverts across different ages and specifications, as of 8 November 2026.

A 2021 BMW 3 Series with the 3.0 diesel engine is typically advertised at £28,400: the median of the 146 for sale on AskCar, as of 8 November 2026.

Time on sale

AskCar first saw this 2021 BMW 3 Series advertised today. About half of 2021 BMW 3 Series cars are gone from sale within a month of being advertised: 436 of the 927 first advertised between 10 July 2026 and 5 October 2026.

Price history

AskCar first saw this advert on 8 November 2026 at £29,995. 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 8 November 2026: valid until 17 July 2027.

It has had 3 MOTs. The latest, on 18 July 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 38,227 miles, which matches the advertised 40,400 miles.

Advertised mileage is about 14,400 miles lower than the median mileage of a 2021 BMW 3 Series on AskCar.