2021 BMW 3 Series

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

£31,690

Fair price: within 8% of the typical £32,237 for this model, age and mileage, drawing on 6,849 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
29,871 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
Black
Doors
4
Driven wheels
Four Wheel Drive
Engine badge
M340d; MHT
Hybrid type
Mild hybrid
Emissions standard
Euro 6

About this car

With 29,871 miles on the clock, this 2021 BMW 3 Series has done roughly 24,700 fewer miles than a typical 2021 BMW 3 Series. The dealer is asking £31,690, which is £547 below our market estimate of £32,237. We use UK dealer asking prices, including 6,849 BMW 3 Series listings, and account for the car’s age, mileage and specification. Since we first spotted the advert 21 days ago, the asking price has dropped by £800. MOT records show an expiry date of 8 October 2027, and the latest recorded mileage is consistent with the advert. You can find this car at SDM Cars Middlefield in Falkirk.

Stock data from 21 October 2026.

How we estimate prices and check cars

Price history

First seen on 1 October 2026, 21 days ago. Advert duration calculated on 22 October 2026. Net asking-price reduction: £800 from the first recorded £32,490. 1 price reduction recorded, the latest observed on 16 October 2026.

Recorded asking prices
Date observedAsking price
1 October 2026£32,490
16 October 2026£31,690
21 October 2026£31,690

Price and mileage comparison

Estimated market asking price: £32,237. The asking price is £547 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 6,849 adverts of this make and model across different ages and specifications.

Advertised mileage is approximately 24,700 miles lower than typical for a 2021 BMW 3 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 8 October 2027. 29,501 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 29,871 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

How to contact the dealer, its opening hours and the cheaper cars like this one are on this AskCar page.

Vehicle photos