2021 BMW 3 Series 3.0 M340i MHT
Price: £29,990. Fair price: £1,471 (5%) over the AskCar estimate of £28,519, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,864 priced BMW 3 Series adverts on AskCar as of 10 November 2026.
AskCar lists 7,127 used BMW 3 Series from 2,713 UK dealerships, as of 10 November 2026.
Overview
- Make: BMW
- Model: 3 Series
- Version: 3.0 M340i MHT Auto 4WD Euro 6 (s/s) 4dr (369 bhp)
- Year: 2021
- Mileage: 62,300 miles
- Fuel: Petrol, mild hybrid
- Body: Saloon, 4 doors, 5 seats
- Engine: 3.0 litres, 369 bhp
- Gearbox: Automatic
- Drive: Four-wheel drive
- Colour: Black
- CO2: 176 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2021 BMW 3 Series has covered 62,300 miles, around 7,600 more miles than is typical for its age. Priced at £29,990, it is advertised £1,471 above the AskCar estimate of £28,519. The AskCar estimate uses 6,864 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 26 days ago. Its asking price has since fallen by £500. The government's MOT record matches its advertised mileage. You can find this car at Mazz Motors in Surbiton. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 10 November 2026.
Mazz Motors is rated 4.4 out of 5 on Google.
Price
Fair price: £1,471 (5%) over the AskCar estimate of £28,519.
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 6,864 priced BMW 3 Series adverts across different ages and specifications, as of 10 November 2026.
A 2021 BMW 3 Series with the 3.0 petrol engine is typically advertised at £28,400: the median of the 147 for sale on AskCar, as of 10 November 2026.
Time on sale
This 2021 BMW 3 Series has been on sale for at least 26 days.
Price history
AskCar first saw this advert on 15 October 2026 at £30,490. Its asking price is now £29,990, £500 less. The latest price cut was seen on 30 October 2026.
Price changes recorded:
- 15 October 2026: £30,490
- 30 October 2026: £29,990
Mileage and MOT
MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 10 November 2026: valid until 29 June 2027.
It has had 4 MOTs. The latest, on 3 June 2026, passed.
There were no advisories at the latest test.
Mileage at that test: 57,866 miles, which matches the advertised 62,300 miles.
Advertised mileage is about 7,600 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
68 photos of this car are on its AskCar page.
As of 10 November 2026, AskCar lists 591,054 cars and vans from 12,888 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.