2021 Mazda Mazda3 2.0 e-SKYACTIV-G MHEV GT Sport Tech
Price: £15,495. Fair price: £123 (under 1%) over the AskCar estimate of £15,372, our expected asking price for this car from its model, age, mileage and specification, drawing on 1,234 priced Mazda Mazda3 adverts on AskCar as of 6 November 2026.
AskCar lists 1,273 used Mazda Mazda3 from 674 UK dealerships, as of 6 November 2026.
Overview
- Make: Mazda
- Model: Mazda3
- Trim: GT Sport Tech
- Version: 2.0 e SKYACTIV-G Mhev GT Sport Tech Manual FWD Euro 6 (s/s) 5dr (120 bhp)
- Year: 2021
- Mileage: 23,520 miles
- Fuel: Petrol, mild hybrid
- Body: Hatchback, 5 doors, 5 seats
- Engine: 2.0 litres, 120 bhp
- Gearbox: Manual
- Drive: Front-wheel drive
- Colour: Grey
- CO2: 127 g/km
- Emissions standard: Euro 6, ULEZ compliant
About this car
This 2021 Mazda Mazda3 GT Sport Tech is advertised with 23,520 miles, approximately 8,100 below the typical mileage for its age. The AskCar estimate for this car is £15,372. It is priced at £15,495, which is £123 above that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 1,234 Mazda Mazda3 cars across different ages and specifications. We have tracked this advert for 50 days. Its advertised mileage matches the government's MOT record. The seller is Victoria Park Mazda, based in Cardiff. How to contact the dealer and its opening hours are on this AskCar page.
Stock data as of 6 November 2026.
Price
Fair price: £123 (under 1%) over the AskCar estimate of £15,372.
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 1,234 priced Mazda Mazda3 adverts across different ages and specifications, as of 6 November 2026.
A 2021 Mazda Mazda3 with the 2.0 petrol engine is typically advertised at £14,800: the median of the 47 for sale on AskCar, as of 6 November 2026.
Time on sale
This 2021 Mazda Mazda3 has been on sale for at least 50 days.
Price history
AskCar first saw this advert on 17 September 2026 at £15,495. Its asking price has not changed.
Mileage and MOT
MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 6 November 2026: valid until 10 June 2027.
It has had 3 MOTs. The latest, on 11 June 2026, passed.
There were no advisories at the latest test.
Mileage at that test: 20,531 miles, which matches the advertised 23,520 miles.
Advertised mileage is about 8,100 miles lower than the median mileage of a 2021 Mazda Mazda3 on AskCar.
Similar cars
4 other 2021 Mazda Mazda3 GT Sport Tech 2.0 petrol manual hatchbacks are for sale at UK dealers, from £14,399 to £16,795, as of 6 November 2026.
The 3 closest to this car in mileage:
- 2021 Mazda Mazda3 GT Sport Tech, 2.0 petrol hatchback, red. Mileage: 21,928 miles. Price: £14,900, £595 less than this car. Dealer: Budgen Motors Citroen Shrewsbury in Shrewsbury. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2021-3d04fd26aadc
- 2021 Mazda Mazda3 GT Sport Tech, 2.0 petrol hatchback, red. Mileage: 10,205 miles. Price: £16,795, £1,300 more than this car. Dealer: EMG Motor Group Cambridge Mazda in Cambridge. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2021-29c92bf75f0a
- 2021 Mazda Mazda3 GT Sport Tech, 2.0 petrol hatchback, blue. Mileage: 41,048 miles. Price: £14,399, £1,096 less than this car. Dealer: cinch Corby in Corby. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2021-08a833e54bcc
Browse all Mazda Mazda3 cars for sale · 2021 Mazda Mazda3 price guide
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Photos
30 photos of this car are on its AskCar page.
As of 6 November 2026, AskCar lists 598,752 cars and vans from 12,905 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.