2021 Mazda Mazda3 2.0 e-SKYACTIV-X MHEV GT Sport Tech

Overview

• Make: Mazda
• Model: Mazda3
• Trim: GT Sport Tech
• Version: 2.0 e-SKYACTIV-X Mhev GT Sport Tech Manual FWD Euro 6 (s/s) 4dr (183 bhp)
• Year: 2021
• Mileage: 37,300 miles
• Fuel: Petrol, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 183 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 37,300 miles, approximately 3,000 above the typical mileage for its age. The AskCar estimate for this car is £14,802. It is priced at £14,660, which is £142 below that estimate. The AskCar estimate uses 1,216 UK dealer adverts for the Mazda Mazda3, with adjustments for age, mileage, trim, engine and other specifications. We first recorded this car for sale 1 day ago. Its advertised mileage matches the government's MOT record. It is for sale at TMMC The Manchester Motor Company in Bolton. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 12 November 2026.

How we estimate prices and check cars

Price

Fair price: £142 (under 1%) under the AskCar estimate of £14,802.

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 1,216 priced Mazda Mazda3 adverts across different ages and specifications, as of 12 November 2026.

A 2021 Mazda Mazda3 with the 2.0 petrol engine is typically advertised at £14,000: the median of the 56 for sale on AskCar, as of 12 November 2026.

Time on sale

AskCar first saw this 2021 Mazda Mazda3 advertised 1 day ago. About 6 in 10 of 2021 Mazda Mazda3 cars are gone from sale within a month of being advertised: 74 of the 134 first advertised between 13 July 2026 and 9 October 2026.

Price history

AskCar first saw this advert on 11 November 2026 at £14,660. 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 12 November 2026: valid until 2 December 2026.

It failed its MOT on 25 November 2025 (nearside headlamp aim too high; offside headlamp aim too high) and passed later the same day.

Advisories at the latest test: brake fluid close to minimum mark; nearside rear tyre slightly damaged/cracking or perishing outer edge perished; offside front tyre slightly damaged/cracking or perishing damage to outer sidewall; and 1 more.

Mileage at that test: 26,631 miles, which matches the advertised 37,300 miles.

Advertised mileage is about 3,000 miles higher than the median mileage of a 2021 Mazda Mazda3 on AskCar.

Similar cars

3 other 2021 Mazda Mazda3 GT Sport Tech 2.0 petrol manual saloons are for sale at UK dealers, from £11,040 to £15,495, as of 12 November 2026.

The 3 closest to this car in mileage:

• 2021 Mazda Mazda3 GT Sport Tech, 2.0 petrol saloon, black. Mileage: 37,000 miles. Price: £15,495, £835 more than this car. Dealer: Oasis Cars in Gravesend. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2021-57fa5940309c
• 2021 Mazda Mazda3 GT Sport Tech, 2.0 petrol saloon, black. Mileage: 32,327 miles. Price: £13,995, £665 less than this car. Dealer: LSH Auto Mercedes-Benz of Stockport in Stockport. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2021-4711a11dfbfb
• 2021 Mazda Mazda3 GT Sport Tech, 2.0 petrol saloon, black. Mileage: 84,634 miles. Price: £11,040, £3,620 less than this car. Dealer: Evans Halshaw Ford East Kilbride in East Kilbride. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2021-933a5622fc8e