2021 BMW X3 3.0 30d MHT M Sport

Version: 3.0 30d MHT M Sport Auto 4WD Euro 6 (s/s) 5dr (282 bhp)

Price: £35,900. Above the going rate: £2,745 (8%) over the AskCar estimate of £33,155, our expected asking price for this car from its model, age, mileage and specification, drawing on 2,993 priced BMW X3 adverts on AskCar as of 30 October 2026.

AskCar lists 3,047 used BMW X3 from 1,191 UK dealerships, as of 30 October 2026.

Overview

Make
BMW
Model
X3
Trim
M Sport
Version
3.0 30d MHT M Sport Auto 4WD Euro 6 (s/s) 5dr (282 bhp)
Mileage
23,953 miles
Year
2021
Fuel type
Diesel
Body type
SUV
Engine
3.0 L
Gearbox
Automatic
Power
282 bhp
Seats
5
CO2
164 g/km
Colour
Black
Doors
5
Driven wheels
Four Wheel Drive
Engine badge
30d; MHT
Hybrid type
Mild hybrid
Emissions standard
Euro 6

About this car

This 2021 BMW X3 M Sport has covered 23,953 miles. Its asking price of £35,900 is £2,745 above the AskCar estimate of £33,155. The AskCar estimate uses 2,993 UK dealer adverts for the BMW X3, with adjustments for age, mileage, trim, engine and other specifications. We first saw this car advertised 14 days ago. Its asking price has since fallen by £600. Ask the dealer why the advert shows fewer miles than the 29,361 recorded at the latest MOT. Its MOT is recorded as valid until 25 September 2027. The seller is Sytner Select Swindon, based in Swindon.

Stock data as of 30 October 2026.

How we estimate prices and check cars

Price history

AskCar first saw this advert on 16 October 2026, 14 days ago. Price reduced by £600 from £36,500 since AskCar first saw it. 1 price reduction recorded, the latest seen on 30 October 2026.

Recorded asking prices
Date observedAsking price
16 October 2026£36,500
30 October 2026£35,900

Price and mileage comparison

Above the going rate: £2,745 (8%) over the AskCar estimate of £33,155.

The AskCar estimate is our expected asking price for this car. It uses UK dealer asking prices, accounting for make, model, trim, version, age, mileage, fuel, gearbox, body type, driven wheels, engine size and power. It is an advertised price, not a confirmed sale price.

It draws on 2,993 priced BMW X3 adverts across different ages and specifications, as of 30 October 2026.

Advertised mileage is about 24,900 miles lower than the median mileage of a 2021 BMW X3 on AskCar.

Mileage concern: the advertised mileage is below the last MOT reading; ask the dealer to explain.

MOT

MOT: valid until 25 September 2027. 29,361 miles at the last test.

Other matching cars

111 other 2021 BMW X3 M Sport automatic diesel cars are for sale at UK dealers from £16,295 to £35,995, as of 30 October 2026.

The 5 cheapest:

The 111 matching cars have covered 12,230 to 114,230 miles, compared with 23,953 miles for this car.

Matching year, trim, gearbox and fuel does not mean matching mileage or every specification. The AskCar estimate adjusts for these differences.

Browse all BMW X3 cars for sale · 2021 BMW X3 price guide

More like this

Photos

12 photos of this car are on its AskCar page.

How to contact the dealer and its opening hours are on this AskCar page.

As of 30 October 2026, AskCar lists 580,490 cars and vans from 12,695 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.