2020 Mazda Mazda3 2.0 SKYACTIV-X MHEV GT Sport

Overview

• Make: Mazda
• Model: Mazda3
• Trim: GT Sport
• Version: 2.0 Skyactiv-x Mhev GT Sport Manual FWD Euro 6 (s/s) 5dr (178 bhp)
• Year: 2020
• Mileage: 28,963 miles
• Fuel: Petrol, mild hybrid
• Body: Hatchback, 5 doors, 5 seats
• Engine: 2.0 litres, 178 bhp
• Gearbox: Manual
• Drive: Front-wheel drive
• Colour: Red
• CO2: 131 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 28,963 miles on the clock, this 2020 Mazda Mazda3 GT Sport has done roughly 20,800 fewer miles than a typical 2020 Mazda Mazda3. The AskCar estimate for this car is £14,786. It is priced at £15,495, which is £710 above that estimate. The AskCar estimate uses UK dealer asking prices, including 1,216 Mazda Mazda3 adverts, and accounts for the car’s age, mileage and specification. It first appeared in our advert records 1 day ago. We checked its advertised mileage against the government's MOT record, and they match. The seller is Westdrive Mazda, based in Braintree. 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: £710 (4%) over the AskCar estimate of £14,786.

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 2020 Mazda Mazda3 with the 2.0 petrol engine is typically advertised at £12,900: the median of the 72 for sale on AskCar, as of 12 November 2026.

Time on sale

AskCar first saw this 2020 Mazda Mazda3 advertised 1 day ago. About 6 in 10 of 2020 Mazda Mazda3 cars are gone from sale within a month of being advertised: 81 of the 147 first advertised between 13 July 2026 and 9 October 2026.

Price history

AskCar first saw this advert on 11 November 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 12 November 2026: valid until 12 November 2027.

It has had 5 MOTs. The latest, on 16 October 2026, passed.

Advisories at the latest test: offside rear brake disc worn, pitted or scored, but not seriously weakened.

Mileage at that test: 28,937 miles, which matches the advertised 28,963 miles.

Advertised mileage is about 20,800 miles lower than the median mileage of a 2020 Mazda Mazda3 on AskCar.

Similar cars

15 other 2020 Mazda Mazda3 GT Sport 2.0 petrol manual hatchbacks are for sale at UK dealers, from £9,450 to £14,450, as of 12 November 2026.

The 3 closest to this car in mileage:

• 2020 Mazda Mazda3 GT Sport, 2.0 petrol hatchback, red. Mileage: 29,228 miles. Price: £13,490, £2,005 less than this car. Dealer: Paul Rigby Hyundai Stratford Upon Avon in Stratford-upon-Avon. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2020-bcc95a699f08
• 2020 Mazda Mazda3 GT Sport, 2.0 petrol hatchback, red. Mileage: 23,612 miles. Price: £14,450, £1,045 less than this car. Dealer: Evans Halshaw Ford Milton Keynes in Milton Keynes. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2020-907658328b75
• 2020 Mazda Mazda3 GT Sport, 2.0 petrol hatchback, grey. Mileage: 35,116 miles. Price: £12,700, £2,795 less than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2020-2dff2f11dfdc

• The nearest: 2020 Mazda Mazda3 GT Sport, 2.0 petrol hatchback, grey, 26 miles from this car. Mileage: 48,000 miles. Price: £12,995, £2,500 less than this car. Dealer: BM Vehicles in Ware. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2020-39a2764fe11d