2021 Mazda Mazda6 2.5 SKYACTIV-G GT Sport

Overview

• Make: Mazda
• Model: Mazda6
• Trim: GT Sport
• Version: 2.5 SKYACTIV-G GT Sport Auto FWD Euro 6 (s/s) 5dr Tourer (191 bhp)
• Year: 2021
• Mileage: 48,550 miles
• Fuel: Petrol
• Body: Estate, 5 doors, 5 seats
• Engine: 2.5 litres, 191 bhp
• Gearbox: Automatic
• Drive: Front-wheel drive
• Colour: Red
• CO2: 172 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

With 48,550 miles on the clock, this 2021 Mazda Mazda6 GT Sport has done roughly 4,200 fewer miles than a typical 2021 Mazda Mazda6. Its asking price of £18,099 is £70 above the AskCar estimate of £18,029. The AskCar estimate draws on 395 Mazda Mazda6 adverts across the UK, adjusting for age, mileage, trim, engine and other specifications. We first recorded this advert 29 days ago, and its asking price has since fallen by £300. Its advertised mileage matches the government's MOT record. The seller is Fords Of Winsford Car Supermarket, based in Winsford. 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: £70 (under 1%) over the AskCar estimate of £18,029.

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 395 priced Mazda Mazda6 adverts across different ages and specifications, as of 4 November 2026.

Time on sale

This 2021 Mazda Mazda6 has been on sale for at least 29 days.

Price history

AskCar first saw this advert on 6 October 2026 at £18,399. Its asking price is now £18,099, £300 less. The latest price cut was seen on 1 November 2026.

Price changes recorded:

• 6 October 2026: £18,399
• 17 October 2026: £18,299
• 21 October 2026: £18,399
• 26 October 2026: £18,299
• 29 October 2026: £18,199
• 1 November 2026: £18,099

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: valid until 26 April 2027.

It has had 3 MOTs. The latest, on 10 April 2026, passed.

Advisories at the latest test: front brake disc worn, pitted or scored, but not seriously weakened lipped slightly.

Mileage at that test: 44,248 miles, which matches the advertised 48,550 miles.

Advertised mileage is about 4,200 miles lower than the median mileage of a 2021 Mazda Mazda6 on AskCar.

Similar cars

2 other 2021 Mazda Mazda6 GT Sport 2.5 petrol automatic estates are for sale at UK dealers, from £14,500 to £14,790, as of 4 November 2026.

The 2 closest to this car in mileage:

• 2021 Mazda Mazda6 GT Sport, 2.5 petrol estate, blue. Mileage: 76,398 miles. Price: £14,790, £3,309 less than this car. Dealer: Dace Motor Company - Trading Standards Approved in Stockport. AskCar page: https://askcar.co.uk/car/mazda-mazda6-2021-f0cab117b9e0
• 2021 Mazda Mazda6 GT Sport, 2.5 petrol estate, black. Mileage: 77,480 miles. Price: £14,500, £3,599 less than this car. Dealer: The Motoring Centre in Royal Leamington Spa. AskCar page: https://askcar.co.uk/car/mazda-mazda6-2021-fc93d709ce48