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: 37,000 miles
• Fuel: Petrol, mild hybrid
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 183 bhp
• Gearbox: Manual
• Drive: Front-wheel drive
• Colour: Black
• CO2: 127 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2021 Mazda Mazda3 GT Sport Tech is advertised with 37,000 miles on the clock. Priced at £15,495, it is advertised £518 above the AskCar estimate of £14,977. The AskCar estimate uses 1,239 UK dealer adverts for the Mazda Mazda3, with adjustments for age, mileage, trim, engine and other specifications. We first recorded this advert 24 days ago, and its asking price has since fallen by £500. The last MOT shows 37,577 miles, more than the advert. This is worth checking with the dealer. The latest recorded MOT expires on 1 October 2027. It is for sale at Oasis Cars in Gravesend. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 5 November 2026.

How we estimate prices and check cars

Price

Fair price: £518 (3%) over the AskCar estimate of £14,977.

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 1,239 priced Mazda Mazda3 adverts across different ages and specifications, as of 5 November 2026.

A 2021 Mazda Mazda3 with the 2.0 petrol engine is typically advertised at £14,700: the median of the 48 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2021 Mazda Mazda3 has been on sale for at least 24 days.

Price history

AskCar first saw this advert on 12 October 2026 at £15,995. Its asking price is now £15,495, £500 less. The latest price cut was seen on 31 October 2026.

Price changes recorded:

• 12 October 2026: £15,995
• 31 October 2026: £15,495

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 1 October 2027.

It has had 6 MOTs. The latest, on 2 October 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 37,577 miles. The advert says 37,000 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 6,500 miles higher than the median mileage of a 2021 Mazda Mazda3 on AskCar.

Similar cars

2 other 2021 Mazda Mazda3 GT Sport Tech 2.0 petrol manual saloons are for sale at UK dealers, from £11,040 to £14,495, as of 5 November 2026.

The 2 closest to this car in mileage:

• 2021 Mazda Mazda3 GT Sport Tech, 2.0 petrol saloon, black. Mileage: 32,327 miles. Price: £14,495, £1,000 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, £4,455 less than this car. Dealer: Evans Halshaw Ford East Kilbride in East Kilbride. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2021-933a5622fc8e