2020 Mazda Mazda3 2.0 SKYACTIV-X GT Sport

Overview

• Make: Mazda
• Model: Mazda3
• Trim: GT Sport
• Version: 2.0 Skyactiv-X GT Sport Manual FWD Euro 6 4dr (177 bhp)
• Year: 2020
• Mileage: 43,486 miles
• Fuel: Petrol
• Body: Saloon, 4 doors, 5 seats
• Engine: 2.0 litres, 177 bhp
• Gearbox: Manual
• Drive: Front-wheel drive
• Colour: Grey
• CO2: 127 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Mazda Mazda3 GT Sport has covered 43,486 miles, around 4,500 fewer miles than is typical for its age. Its asking price of £12,636 is £595 below the AskCar estimate of £13,231. The AskCar estimate draws on 1,241 Mazda Mazda3 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first saw this car advertised 50 days ago. Its asking price has since fallen by £364. We checked its advertised mileage against the government's MOT record, and they match. The seller is Carbase Bristol, based in Bristol. 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: £595 (4%) under the AskCar estimate of £13,231.

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

This 2020 Mazda Mazda3 has been on sale for at least 50 days.

Price history

AskCar first saw this advert on 15 September 2026 at £13,000. Its asking price is now £12,636, £364 less. The latest price cut was seen on 20 October 2026.

Price changes recorded:

• 15 September 2026: £13,000
• 8 October 2026: £12,805
• 10 October 2026: £12,708
• 13 October 2026: £12,699
• 20 October 2026: £12,636

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 13 August 2027.

It has had 5 MOTs. The latest, on 14 August 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 43,271 miles, which matches the advertised 43,486 miles.

Advertised mileage is about 4,500 miles lower than the median mileage of a 2020 Mazda Mazda3 on AskCar.

Similar cars

4 other 2020 Mazda Mazda3 GT Sport 2.0 petrol manual saloons are for sale at UK dealers, from £11,995 to £14,999, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2020 Mazda Mazda3 GT Sport, 2.0 petrol saloon, black. Mileage: 32,300 miles. Price: £14,500, £1,864 more than this car. Dealer: Simon Shield Cars in Ipswich. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2020-2540555a74d7
• 2020 Mazda Mazda3 GT Sport, 2.0 petrol saloon, silver. Mileage: 31,924 miles. Price: £14,180, £1,544 more than this car. Dealer: Evans Halshaw Kia Stourbridge in Stourbridge. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2020-8e8e2eaf35f3
• 2020 Mazda Mazda3 GT Sport, 2.0 petrol saloon, blue. Mileage: 23,557 miles. Price: £14,999, £2,363 more than this car. Dealer: HPL Preston in Preston. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2020-b0d6f9e2fa6f