2020 Mazda Mazda3 2.0 GT Sport

Overview

• Make: Mazda
• Model: Mazda3
• Trim: GT Sport
• Version: 2.0 SKYACTIV-G GT Sport Manual FWD Euro 6 5dr (120 bhp)
• Year: 2020
• Mileage: 35,116 miles
• Fuel: Petrol
• Body: Hatchback, 5 doors, 5 seats
• Engine: 2.0 litres, 120 bhp
• Gearbox: Manual
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 119 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 35,116 miles on the clock, this 2020 Mazda Mazda3 GT Sport has done roughly 12,900 fewer miles than a typical 2020 Mazda Mazda3. Its asking price of £12,800 is £651 below the AskCar estimate of £13,451. To work out the AskCar estimate, we analyse UK dealer adverts for 1,241 Mazda Mazda3 cars across different ages and specifications. The dealer may accept less: this car has been on sale for at least 68 days, and its asking price has been cut by £1,000. According to the government's MOT record, its advertised mileage is consistent with the latest test. You can find this car at Car Planet Watford in Rickmansworth. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 4 November 2026.

How we estimate prices and check cars

Price

Fair price: £651 (4%) under the AskCar estimate of £13,451.

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 1,241 priced Mazda Mazda3 adverts across different ages and specifications, as of 4 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 4 November 2026.

Time on sale

The dealer may accept less. This 2020 Mazda Mazda3 has been on sale for at least 68 days, and its asking price has been cut by £1,000. About 6 in 10 of 2020 Mazda Mazda3 cars are gone from sale within a month of being advertised: 74 of the 133 first advertised between 13 July 2026 and 1 October 2026.

Price history

AskCar first saw this advert on 28 August 2026 at £13,800. Its asking price is now £12,800, £1,000 less. The latest price cut was seen on 26 October 2026.

Price changes recorded:

• 28 August 2026: £13,800
• 16 September 2026: £13,750
• 22 September 2026: £13,650
• 28 September 2026: £13,550
• 5 October 2026: £13,350
• 12 October 2026: £13,200
• 19 October 2026: £12,950
• 26 October 2026: £12,750
• 1 November 2026: £12,800

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 8 July 2027.

It has had 6 MOTs. The latest, on 7 July 2026, passed.

Advisories at the latest test: front brake disc worn, but not excessively both sides; front brake pad(s) wearing thin both sides.

Mileage at that test: 35,107 miles, which matches the advertised 35,116 miles.

Advertised mileage is about 12,900 miles lower than the median mileage of a 2020 Mazda Mazda3 on AskCar.

Similar cars

12 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 4 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: £13,690, £890 more 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, white. Mileage: 44,632 miles. Price: £13,980, £1,180 more than this car. Dealer: Green 4 Motor Company Leamington Mazda in Warwick. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2020-1b45aa9178a7
• 2020 Mazda Mazda3 GT Sport, 2.0 petrol hatchback, white. Mileage: 45,057 miles. Price: £12,999, £199 more than this car. Dealer: cinch Corby in Corby. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2020-87c8b4fe962a

• The nearest: 2020 Mazda Mazda3 GT Sport, 2.0 petrol hatchback, grey, 20 miles from this car. Mileage: 48,000 miles. Price: £12,995, £195 more than this car. Dealer: BM Vehicles in Ware. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2020-39a2764fe11d