2021 BMW 3 Series

2.0 320i M Sport Auto RWD Euro 6 (s/s) 4dr (181 bhp)

£21,988

Fair price: within 8% of the typical £22,867 for this model, age and mileage, drawing on 6,849 adverts of this make and model.

Overview

Make: BMW
Model: 3 Series
Trim: M SPORT
Version: 2.0 320i M Sport Auto RWD Euro 6 (s/s) 4dr (181 bhp)
Mileage: 28,806 miles
Year: 2021
Fuel type: Petrol
Body type: Saloon
Engine: 2.0 L
Gearbox: Automatic
Power: 181 bhp
Seats: 5
CO2: 146 g/km
Colour: White
Doors: 4
Driven wheels: Rear Wheel Drive
Engine badge: 320i
Emissions standard: Euro 6

About this car

At 28,806 miles, this 2021 BMW 3 Series M Sport has covered about 25,800 fewer miles than other 2021 BMW 3 Series cars. Its asking price of £21,988 is £879 below our estimate of £22,867. We use UK dealer asking prices, including 6,849 BMW 3 Series listings, and account for the car’s age, mileage and specification. This car was first seen in our listings data 20 days ago. MOT records show an expiry date of 19 September 2027, and the latest recorded mileage is consistent with the advert. The seller is CarSupermarket.com Barnsley, based in Barnsley.

Stock data from 21 October 2026.

How we estimate prices and check cars

Price history

First seen on 2 October 2026, 20 days ago. Advert duration calculated on 22 October 2026.

Recorded asking prices
Date observed	Asking price
2 October 2026	£21,988
21 October 2026	£21,988

Price and mileage comparison

Estimated market asking price: £22,867. The asking price is £879 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 25,800 miles lower than typical for a 2021 BMW 3 Series.

The advertised mileage is consistent with the last MOT reading.

MOT

MOT valid until 19 September 2027. 28,408 miles at the last test.

179 other cars with the same year, trim, gearbox and fuel are for sale from £14,000 to £29,990.

Other matching cars (up to five, cheapest first)
Asking price	Mileage
£14,000	110,887 miles
£14,000	93,863 miles
£14,335	88,796 miles
£14,995	87,565 miles
£15,195	93,000 miles

These cars have covered 3,973–110,887 miles, compared with 28,806 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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Dealer

CarSupermarket.com Barnsley, Barnsley. Across the dealer network: 14 branches, 1,429 cars for sale.

Dealer postcode: S70 5SZ.

Dealer opening hours

Monday: 08:30-20:00
Tuesday: 08:30-20:00
Wednesday: 08:30-20:00
Thursday: 08:30-20:00
Friday: 08:30-20:00
Saturday: 08:30-17:30
Sunday: 10:00-16:00