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: 30,118 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 30,118 miles, this 2020 Mazda Mazda3 GT Sport Tech has covered about 18,400 fewer miles than other 2020 Mazda Mazda3 cars. The dealer is asking £15,350, which is £35 above the AskCar estimate of £15,315. To work out the AskCar estimate, we analyse UK dealer adverts for 1,239 Mazda Mazda3 cars across different ages and specifications. We first recorded this advert 54 days ago, and its asking price has since fallen by £600. Its advertised mileage matches the government's MOT record. The seller is Evans Halshaw Renault Dacia Sunderland, based in Sunderland. 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: £35 (under 1%) over the AskCar estimate of £15,315.

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 54 days.

Price history

AskCar first saw this advert on 12 September 2026 at £15,950. Its asking price is now £15,350, £600 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

• 12 September 2026: £15,950
• 15 September 2026: £15,830
• 16 September 2026: £15,720
• 29 September 2026: £15,700
• 2 October 2026: £15,580
• 7 October 2026: £15,540
• 13 October 2026: £15,500
• 20 October 2026: £15,460
• 27 October 2026: £15,420
• 4 November 2026: £15,350

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 5 November 2026: valid until 18 December 2026.

It has had 3 MOTs. The latest, on 4 December 2025, passed.

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

Mileage at that test: 27,190 miles, which matches the advertised 30,118 miles.

Advertised mileage is about 18,400 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 £15,890, 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: 24,599 miles. Price: £15,890, £540 more than this car. Dealer: The Donalds Group Donalds Mazda Norwich in Norwich. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2020-d75de30abcb2
• 2020 Mazda Mazda3 GT Sport Tech, 2.0 petrol hatchback, red. Mileage: 42,000 miles. Price: £15,485, £135 more 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, £1,755 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, 133 miles from this car. Mileage: 134,637 miles. Price: £7,495, £7,855 less than this car. Dealer: MTM Car Sales in Pitcairngreen. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2020-0705cd1422f9