2021 BMW 3 Series

2.0 318i M Sport Auto RWD Euro 6 (s/s) 4dr (154 bhp)

£17,991

Fair price: within 8% of the typical £18,982 for this model, age and mileage, drawing on 6,886 adverts of this make and model.

Overview

Make
BMW
Model
3 Series
Trim
M SPORT
Version
2.0 318i M Sport Auto RWD Euro 6 (s/s) 4dr (154 bhp)
Mileage
52,840 miles
Year
2021
Fuel type
Petrol
Body type
Saloon
Engine
2.0 L
Gearbox
Automatic
Power
154 bhp
Seats
5
CO2
146 g/km
Colour
White
Doors
4
Driven wheels
Rear Wheel Drive
Engine badge
318i
Emissions standard
Euro 6

About this car

This 2021 BMW 3 Series M Sport has covered 52,840 miles. Its asking price of £17,991 is £991 below our estimate of £18,982. We use UK dealer asking prices, including 6,886 BMW 3 Series listings, and account for the car’s age, mileage and specification. This car was first seen in our listings data 6 days ago. The recorded MOT expired on 1 May 2026, so ask the dealer whether it has been renewed. Our comparison with the latest MOT reading has not flagged a mileage discrepancy. The seller is Cardiff Trade Sales, based in Cardiff.

Stock data from 22 October 2026.

How we estimate prices and check cars

Price history

First seen on 17 October 2026, 6 days ago. Advert duration calculated on 23 October 2026.

Recorded asking prices
Date observedAsking price
17 October 2026£17,991
22 October 2026£17,991

Price and mileage comparison

Estimated market asking price: £18,982. The asking price is £991 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 1,900 miles lower than typical for a 2021 BMW 3 Series.

The advertised mileage is consistent with the last MOT reading.

The recorded MOT has expired; ask the dealer for an up-to-date MOT.

MOT

MOT not valid until 1 May 2026. 45,850 miles at the last test.

178 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 priceMileage
£14,000110,887 miles
£14,00093,863 miles
£14,33588,796 miles
£14,89593,000 miles
£14,99587,565 miles

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