2021 BMW 3 Series 3.0 M340d MHT
Price: £30,500. Fair price: £406 (1%) under the AskCar estimate of £30,906, 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 Touring Auto 4WD Euro 6 (s/s) 5dr (335 bhp)
- Year: 2021
- Mileage: 53,822 miles
- Fuel: Diesel, mild hybrid
- Body: Estate, 5 doors, 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
This 2021 BMW 3 Series has covered 53,822 miles. Its asking price of £30,500 is £406 below the AskCar estimate of £30,906. The AskCar estimate uses 6,886 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 121 days ago. Its asking price has since fallen by £2,000. The government's MOT record matches its advertised mileage. You can find this car at Redgate Lodge in Newcastle Upon Tyne. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 7 November 2026.
Price
Fair price: £406 (1%) under the AskCar estimate of £30,906.
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 121 days.
Price history
AskCar first saw this advert on 9 July 2026 at £32,500. Its asking price is now £30,500, £2,000 less. The latest price cut was seen on 6 November 2026.
Price changes recorded:
- 10 July 2026: £32,500
- 5 August 2026: £32,000
- 8 September 2026: £31,700
- 30 September 2026: £31,500
- 16 October 2026: £31,000
- 6 November 2026: £30,500
Mileage and MOT
MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 7 November 2026: valid until 27 March 2027.
It has had 3 MOTs. The latest, on 10 March 2026, passed.
There were no advisories at the latest test.
Mileage at that test: 52,393 miles, which matches the advertised 53,822 miles.
Advertised mileage is about 1,300 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
100 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.