2021 BMW 3 Series

3.0 M340d MHT Auto 4WD Euro 6 (s/s) 4dr (335 bhp)

£26,489

Fair price: within 8% of the typical £27,833 for this model, age and mileage, drawing on 6,886 adverts of this make and model.

Overview

Make
BMW
Model
3 Series
Version
3.0 M340d MHT Auto 4WD Euro 6 (s/s) 4dr (335 bhp)
Mileage
54,500 miles
Year
2021
Fuel type
Diesel Hybrid
Body type
Saloon
Engine
3.0 L
Gearbox
Automatic
Power
335 bhp
Seats
5
CO2
160 g/km
Colour
Blue
Doors
4
Driven wheels
Four Wheel Drive
Engine badge
M340d; MHT
Hybrid type
Mild hybrid
Emissions standard
Euro 6

About this car

The advertised mileage for this 2021 BMW 3 Series is 54,500 miles. At £26,489, it is advertised £1,344 below our estimated market asking price of £27,833. We use UK dealer asking prices, including 6,886 BMW 3 Series listings, and account for the car’s age, mileage and specification. The asking price is now £2,500 lower than when we first recorded the advert 148 days ago. It may give you a starting point for a conversation about price. The latest MOT record shows an expiry date of 25 June 2027, with the advertised mileage consistent with the recorded reading. You can find this car at A6 Motors in Bedford.

Stock data from 22 October 2026.

How we estimate prices and check cars

Price history

First seen on 28 May 2026, 148 days ago. Advert duration calculated on 23 October 2026. Net asking-price reduction: £2,500 from the first recorded £28,989. 4 price reductions recorded, the latest observed on 20 October 2026.

Recorded asking prices
Date observedAsking price
28 May 2026£28,989
6 July 2026£28,989
4 August 2026£27,989
5 August 2026£27,989
26 August 2026£27,489
2 October 2026£26,989
20 October 2026£26,489
22 October 2026£26,489

Price and mileage comparison

Estimated market asking price: £27,833. The asking price is £1,344 below this estimate.

The estimate uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It estimates an advertised price, not a confirmed sale price.

The pricing calculation includes 6,886 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 200 miles lower than typical for a 2021 BMW 3 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 25 June 2027. 54,694 miles at the last test.

55 other cars with the same year, trim, gearbox and fuel are for sale from £19,995 to £36,500.

Other matching cars (up to five, cheapest first)
Asking priceMileage
£19,99566,457 miles
£22,49094,000 miles
£22,95079,227 miles
£22,99599,000 miles
£23,99582,819 miles

These cars have covered 8,500–99,000 miles, compared with 54,500 miles for this car.

Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. Our estimate adjusts for these differences using the wider market data.

Browse all BMW 3 Series cars for sale · 2021 BMW 3 Series price guide

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Vehicle photos

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