2020 Mazda Mazda3 2.0 GT Sport Tech

Overview

• Make: Mazda
• Model: Mazda3
• Trim: GT Sport Tech
• Version: 2.0 GT Sport Tech Auto 4WD Euro 6 5dr (177 bhp)
• Year: 2020
• Mileage: 17,975 miles
• Fuel: Petrol
• Body: Hatchback, 5 doors, 5 seats
• Engine: 2.0 litres, 177 bhp
• Gearbox: Automatic
• Drive: Four-wheel drive
• Colour: Black
• CO2: 157 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2020 Mazda Mazda3 GT Sport Tech is advertised with 17,975 miles on the clock. Its asking price of £17,822 is £1,043 below the AskCar estimate of £18,865. The AskCar estimate uses UK dealer asking prices, including 1,241 Mazda Mazda3 adverts, and accounts for the car’s age, mileage and specification. Since we first spotted the advert 16 days ago, the asking price has dropped by £437. The latest MOT recorded 20,572 miles, above the advertised mileage. Check this with the dealer. Its MOT is recorded as valid until 30 December 2026. The seller is Stellantis &You Stockport, based in Stockport. 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: £1,043 (5%) under the AskCar estimate of £18,865.

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 16 days.

Price history

AskCar first saw this advert on 19 October 2026 at £18,259. Its asking price is now £17,822, £437 less. The latest price cut was seen on 4 November 2026.

Price changes recorded:

• 19 October 2026: £18,259
• 20 October 2026: £18,290
• 21 October 2026: £18,360
• 23 October 2026: £18,369
• 24 October 2026: £18,225
• 25 October 2026: £17,975
• 26 October 2026: £18,225
• 27 October 2026: £17,975
• 29 October 2026: £17,925
• 30 October 2026: £17,912
• 1 November 2026: £17,931
• 2 November 2026: £17,881
• 3 November 2026: £17,831
• 4 November 2026: £17,822

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 30 December 2026.

It has had 3 MOTs. The latest, on 19 December 2025, passed.

Advisories at the latest test: rear brake disc worn, pitted or scored, but not seriously weakened; nearside rear tyre slightly damaged/cracking or perishing.

Mileage at that test: 20,572 miles. The advert says 17,975 miles, fewer than the MOT record, so ask the dealer which is right.

Advertised mileage is about 30,000 miles lower than the median mileage of a 2020 Mazda Mazda3 on AskCar.

Similar cars

3 other 2020 Mazda Mazda3 GT Sport Tech 2.0 petrol automatic hatchbacks are for sale at UK dealers, from £13,475 to £14,299, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2020 Mazda Mazda3 GT Sport Tech, 2.0 petrol hatchback, red. Mileage: 52,736 miles. Price: £13,699, £4,123 less than this car. Dealer: cinch Bellevue in Hook. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2020-cf449a8ec6e9
• 2020 Mazda Mazda3 GT Sport Tech, 2.0 petrol hatchback, silver. Mileage: 53,736 miles. Price: £14,299, £3,523 less than this car. Dealer: cinch Bellevue in Hook. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2020-e03d4e56eb6b
• 2020 Mazda Mazda3 GT Sport Tech, 2.0 petrol hatchback, grey. Mileage: 59,377 miles. Price: £13,475, £4,347 less than this car. Dealer: JMV Cars Ltd of Shorne in Gravesend. AskCar page: https://askcar.co.uk/car/mazda-mazda3-2020-82f1f1071c78