2021 BMW 3 Series 3.0 M340i MHT
Version: 3.0 M340i MHT Auto 4WD Euro 6 (s/s) 4dr (369 bhp)
Price: £30,495. Fair price: £1,429 (4%) under the AskCar estimate of £31,924, our expected asking price for this car from its model, age, mileage and specification, drawing on 6,706 priced BMW 3 Series adverts on AskCar as of 30 October 2026.
AskCar lists 6,987 used BMW 3 Series from 2,629 UK dealerships, as of 30 October 2026.
Overview
- Make
- BMW
- Model
- 3 Series
- Version
- 3.0 M340i MHT Auto 4WD Euro 6 (s/s) 4dr (369 bhp)
- Mileage
- 45,778 miles
- Year
- 2021
- Fuel type
- Petrol
- Body type
- Saloon
- Engine
- 3.0 L
- Gearbox
- Automatic
- Power
- 369 bhp
- Seats
- 5
- CO2
- 176 g/km
- Colour
- Black
- Doors
- 4
- Driven wheels
- Four Wheel Drive
- Engine badge
- M340i; MHT
- Hybrid type
- Mild hybrid
- Emissions standard
- Euro 6
About this car
At 45,778 miles, this 2021 BMW 3 Series has covered about 8,900 fewer miles than other 2021 BMW 3 Series cars. Its asking price of £30,495 is £1,429 below the AskCar estimate of £31,924. To work out the AskCar estimate, we analyse UK dealer adverts for 6,706 BMW 3 Series cars across different ages and specifications. It first appeared in our advert records today. The latest recorded MOT expires on 7 January 2027. It is advertised by Motor Land in Beckenham.
Stock data as of 30 October 2026.
Price history
AskCar first saw this advert on 30 October 2026.
| Date observed | Asking price |
|---|---|
| 30 October 2026 | £30,495 |
Price and mileage comparison
Fair price: £1,429 (4%) under the AskCar estimate of £31,924.
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 6,706 priced BMW 3 Series adverts across different ages and specifications, as of 30 October 2026.
Advertised mileage is about 8,900 miles lower than the median mileage of a 2021 BMW 3 Series on AskCar.
MOT
MOT: valid until 7 January 2027.
Other matching cars
61 other 2021 BMW 3 Series automatic petrol cars are for sale at UK dealers from £22,000 to £45,000, as of 30 October 2026.
The 5 cheapest:
- 2021 BMW 3 Series. Price: £22,000. Mileage: 20,565 miles. Dealer: Sytner Cardiff BMW in Cardiff. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-30a32cfa2a20
- 2021 BMW 3 Series. Price: £24,975. Mileage: 89,162 miles. Dealer: Junction 17 Cars (Rugby) in Rugby. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-8d56ff51bfbf
- 2021 BMW 3 Series. Price: £25,499. Mileage: 63,729 miles. Dealer: Steven Eagell Toyota Bedford in Bedford. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-9c2e0b321721
- 2021 BMW 3 Series. Price: £25,990. Mileage: 37,000 miles. Dealer: Kingstanding Car Sales in Kingstanding. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-fa7cf56a0143
- 2021 BMW 3 Series. Price: £25,995. Mileage: 84,000 miles. Dealer: Mk Autos in Failsworth. AskCar page: https://askcar.co.uk/car/bmw-3-series-2021-f78f60a80d78
The 61 matching cars have covered 6,593 to 89,162 miles, compared with 45,778 miles for this car.
Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. The AskCar estimate adjusts for these differences.
Browse all BMW 3 Series cars for sale · 2021 BMW 3 Series price guide
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Photos
30 photos of this car are on its AskCar page.
How to contact the dealer and its opening hours are on this AskCar page.
As of 30 October 2026, AskCar lists 580,490 cars and vans from 12,695 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.