2021 BMW 3 Series

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

£22,950

Fair price: within 8% of the typical £23,235 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: 79,227 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

At 79,227 miles, this 2021 BMW 3 Series has covered about 24,500 more miles than other 2021 BMW 3 Series cars. The dealer is asking £22,950, which is £285 below our market estimate of £23,235. Our estimate draws on 6,886 BMW 3 Series adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We have tracked this advert for 15 days. Its MOT is recorded as valid until 23 July 2027. The advertised mileage is consistent with the latest MOT reading. It is for sale at Car Planet Watford in Rickmansworth.

Stock data from 22 October 2026.

How we estimate prices and check cars

Price history

First seen on 9 October 2026, 15 days ago. Advert duration calculated on 24 October 2026.

Recorded asking prices
Date observed	Asking price
9 October 2026	£22,950
22 October 2026	£22,950

Price and mileage comparison

Estimated market asking price: £23,235. The asking price is £285 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 24,500 miles higher than typical for a 2021 BMW 3 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 23 July 2027. 76,111 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 price	Mileage
£19,995	66,457 miles
£22,490	94,000 miles
£22,995	99,000 miles
£23,995	82,819 miles
£23,995	70,870 miles

These cars have covered 8,500–99,000 miles, compared with 79,227 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

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