2021 BMW 3 Series

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

£33,000

Good value: £3,295 under the typical £36,295 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: 8,500 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: Grey
Doors: 4
Driven wheels: Four Wheel Drive
Engine badge: M340d; MHT
Hybrid type: Mild hybrid
Emissions standard: Euro 6

About this car

With 8,500 miles on the clock, this 2021 BMW 3 Series has done roughly 46,100 fewer miles than a typical 2021 BMW 3 Series. Its asking price of £33,000 is £3,295 below our estimate of £36,295. The estimate uses 6,849 UK dealer adverts for the BMW 3 Series, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 113 days ago. Its asking price has since fallen by £999. It may give you a starting point for a conversation about price. You can find this car at Alliance Motors Uk in West Bromwich.

Stock data from 21 October 2026.

How we estimate prices and check cars

Price history

First seen on 1 July 2026, 113 days ago. Advert duration calculated on 22 October 2026. Net asking-price reduction: £999 from the first recorded £33,999. 1 price reduction recorded, the latest observed on 25 September 2026.

Recorded asking prices
Date observed	Asking price
1 July 2026	£33,999
6 July 2026	£33,999
25 September 2026	£33,000
21 October 2026	£33,000

Price and mileage comparison

Estimated market asking price: £36,295. The asking price is £3,295 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 46,100 miles lower than typical for a 2021 BMW 3 Series.

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
£22,950	79,227 miles
£22,995	99,000 miles
£23,995	82,819 miles

These cars have covered 25,270–99,000 miles, compared with 8,500 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

Similar cars for less

Dealer

Alliance Motors Uk, West Bromwich. Across the dealer network: 22 cars for sale.

Dealer postcode: B71 3EA.