2020 Mazda Mazda3 2.0 SKYACTIV-X MHEV GT Sport Tech

Overview

• Make: Mazda
• Model: Mazda3
• Trim: GT Sport Tech
• Version: 2.0 Skyactiv-x Mhev GT Sport Tech Manual Euro 6 (s/s) 5dr (178 bhp)
• Year: 2020
• Mileage: 24,599 miles
• Fuel: Petrol, mild hybrid
• Body: Hatchback, 5 doors, 5 seats
• Engine: 2.0 litres, 178 bhp
• Gearbox: Manual
• Colour: Grey
• CO2: 131 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

At 24,599 miles, this 2020 Mazda Mazda3 GT Sport Tech has covered about 23,900 fewer miles than other 2020 Mazda Mazda3 cars. The dealer is asking £15,890, which is £99 above the AskCar estimate of £15,791. To work out the AskCar estimate, we analyse UK dealer adverts for 1,239 Mazda Mazda3 cars across different ages and specifications. We have tracked this advert for 32 days. According to the government's MOT record, its advertised mileage is consistent with the latest test. The seller is The Donalds Group Donalds Mazda Norwich, based in Norwich. 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: £99 (under 1%) over the AskCar estimate of £15,791.

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 2020 Mazda Mazda3 with the 2.0 petrol engine is typically advertised at £13,000: the median of the 72 for sale on AskCar, as of 5 November 2026.

Time on sale

This 2020 Mazda Mazda3 has been on sale for at least 32 days.

Price history

AskCar first saw this advert on 4 October 2026 at £15,768. Its asking price is now £15,890, £122 more.

Price changes recorded:

• 4 October 2026: £15,768
• 9 October 2026: £15,990
• 22 October 2026: £15,890

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 20 September 2027.

It has had 4 MOTs. The latest, on 10 September 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 24,484 miles, which matches the advertised 24,599 miles.

Advertised mileage is about 23,900 miles lower than the median mileage of a 2020 Mazda Mazda3 on AskCar.

Similar cars

7 other 2020 Mazda Mazda3 GT Sport Tech 2.0 petrol manual hatchbacks are for sale at UK dealers, from £7,495 to £15,485, as of 5 November 2026.

The 3 closest to this car in mileage:

• 2020 Mazda Mazda3 GT Sport Tech, 2.0 petrol hatchback, grey. Mileage: 30,118 miles. Price: £15,350, £540 less than this car. Dealer: Evans Halshaw Renault Dacia Sunderland in Sunderland. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2020-0d2be1f1af06
• 2020 Mazda Mazda3 GT Sport Tech, 2.0 petrol hatchback, red. Mileage: 42,000 miles. Price: £15,485, £405 less than this car. Dealer: Harris Cars in Southampton. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2020-96b4e989f44e
• 2020 Mazda Mazda3 GT Sport Tech, 2.0 petrol hatchback, grey. Mileage: 50,400 miles. Price: £13,595, £2,295 less than this car. Dealer: Holdcroft Motor Group Mazda Hanley in Hanley. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2020-7c55b3adecd7

• The nearest: 2020 Mazda Mazda3 GT Sport Tech, 2.0 petrol hatchback, grey, 137 miles from this car. Mileage: 80,000 miles. Price: £10,490, £5,400 less than this car. Dealer: Manamanx in Reading. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2020-619bb6f00e2b