2021 BMW 3 Series 3.0 M340d MHT
Price: £27,990. Fair price: £2,337 (7%) under the AskCar estimate of £30,327, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,814 priced BMW 3 Series adverts on AskCar as of 9 November 2026.
AskCar lists 7,087 used BMW 3 Series from 2,693 UK dealerships, as of 9 November 2026.
Overview
- Make: BMW
- Model: 3 Series
- Version: 3.0 M340d MHT Auto 4WD Euro 6 (s/s) (335 bhp)
- Year: 2021
- Mileage: 54,164 miles
- Fuel: Diesel, mild hybrid
- Body: 5 seats
- Engine: 3.0 litres, 335 bhp
- Gearbox: Automatic
- Drive: Four-wheel drive
- Colour: Grey
- CO2: 165 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
The advertised mileage for this 2021 BMW 3 Series is 54,164 miles. Its asking price of £27,990 is £2,337 below the AskCar estimate of £30,327. The AskCar estimate uses 6,814 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 62 days ago. Its asking price has since fallen by £3,800. The latest recorded MOT expiry date is 25 October 2026, which has passed. Confirm its status with the dealer. Its advertised mileage matches the government's MOT record. The seller is Group 1 Norwich BMW, based in Norwich. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 9 November 2026.
Group 1 Norwich BMW is rated 4.5 out of 5 on Google.
Price
Fair price: £2,337 (7%) under the AskCar estimate of £30,327.
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 6,814 priced BMW 3 Series adverts across different ages and specifications, as of 9 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 9 November 2026.
Time on sale
This 2021 BMW 3 Series has been on sale for at least 62 days.
Price history
AskCar first saw this advert on 8 September 2026 at £31,790. Its asking price is now £27,990, £3,800 less. The latest price cut was seen on 7 November 2026.
Price changes recorded:
- 8 September 2026: £31,790
- 11 September 2026: £31,990
- 16 September 2026: £31,490
- 22 September 2026: £30,990
- 1 October 2026: £30,890
- 7 October 2026: £30,690
- 13 October 2026: £30,490
- 20 October 2026: £29,990
- 27 October 2026: £29,370
- 30 October 2026: £28,990
- 3 November 2026: £28,490
- 7 November 2026: £27,990
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 25 October 2026; ask the dealer for the current MOT.
It has had 3 MOTs. The latest, on 14 October 2025, passed.
Advisories at the latest test: front brake disc worn, pitted or scored, but not seriously weakened both.
Mileage at that test: 49,402 miles, which matches the advertised 54,164 miles.
Advertised mileage is about 500 miles lower 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
65 photos of this car are on its AskCar page.
As of 9 November 2026, AskCar lists 584,619 cars and vans from 12,676 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.