2021 BMW 3 Series 3.0 M340d MHT
Price: £27,990. Fair price: £1,315 (4%) over the AskCar estimate of £26,675, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,886 priced BMW 3 Series adverts on AskCar as of 7 November 2026.
AskCar lists 7,202 used BMW 3 Series from 2,724 UK dealerships, as of 7 November 2026.
Overview
- Make: BMW
- Model: 3 Series
- Version: 3.0 M340d MHT Auto 4WD Euro 6 (s/s) 4dr (335 bhp)
- Year: 2021
- Mileage: 59,000 miles
- Fuel: Diesel, mild hybrid
- Body: Saloon, 4 doors, 5 seats
- Engine: 3.0 litres, 335 bhp
- Gearbox: Automatic
- Drive: Four-wheel drive
- Colour: Grey
- CO2: 160 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2021 BMW 3 Series is advertised with 59,000 miles, approximately 3,900 above the typical mileage for its age. Its asking price of £27,990 is £1,315 above the AskCar estimate of £26,675. The AskCar estimate uses UK dealer asking prices, including 6,886 BMW 3 Series adverts, and accounts for the car’s age, mileage and specification. This car was first seen in our listings data 50 days ago. According to the government's MOT record, its advertised mileage is consistent with the latest test. It is advertised by Your Car Group in Newport. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 7 November 2026.
Price
Fair price: £1,315 (4%) over the AskCar estimate of £26,675.
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 6,886 priced BMW 3 Series adverts across different ages and specifications, as of 7 November 2026.
A 2021 BMW 3 Series with the 3.0 diesel engine is typically advertised at £28,300: the median of the 148 for sale on AskCar, as of 7 November 2026.
Time on sale
This 2021 BMW 3 Series has been on sale for at least 50 days.
Price history
AskCar first saw this advert on 18 September 2026 at £27,990. 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 7 November 2026: valid until 14 July 2027.
It has had 3 MOTs. The latest, on 19 June 2026, passed.
Advisories at the latest test: nearside front tyre worn close to legal limit/worn on edge.
Mileage at that test: 56,514 miles, which matches the advertised 59,000 miles.
Advertised mileage is about 3,900 miles higher than the median mileage of a 2021 BMW 3 Series on AskCar.
Browse all BMW 3 Series cars for sale · 2021 BMW 3 Series price guide
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Photos
26 photos of this car are on its AskCar page.
As of 7 November 2026, AskCar lists 601,018 cars and vans from 12,892 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.