2018 Mazda MX-5 2.0 SKYACTIV-G Sport NAV

Overview

• Make: Mazda
• Model: MX-5
• Trim: Sport NAV
• Version: 2.0 SKYACTIV-G Sport NAV Manual RWD Euro 6 2dr (158 bhp)
• Year: 2018
• Mileage: 100,172 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 2 seats
• Engine: 2.0 litres, 158 bhp
• Gearbox: Manual
• Drive: Rear-wheel drive
• Colour: Grey
• CO2: 161 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Mazda MX-5 Sport Nav has covered 100,172 miles, around 71,300 more miles than is typical for its age. The AskCar estimate for this car is £9,665. It is priced at £8,995, which is £670 below that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 629 Mazda MX-5 cars across different ages and specifications. The asking price is now £1,000 lower than when we first recorded the advert 38 days ago. We checked its advertised mileage against the government's MOT record, and they match. It is for sale at Elm Motor Company in Plymouth. How to contact the dealer and its opening hours are on this AskCar page.

Stock data as of 2 November 2026.

How we estimate prices and check cars

Price

Fair price: £670 (6%) under the AskCar estimate of £9,665.

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 629 priced Mazda MX-5 adverts across different ages and specifications, as of 2 November 2026.

A 2018 Mazda MX-5 with the 2.0 petrol engine is typically advertised at £15,300: the median of the 31 for sale on AskCar, as of 2 November 2026.

Time on sale

This 2018 Mazda MX-5 has been on sale for at least 38 days.

Price history

AskCar first saw this advert on 25 September 2026 at £9,995. Its asking price is now £8,995, £1,000 less. The latest price cut was seen on 23 October 2026.

Price changes recorded:

• 25 September 2026: £9,995
• 13 October 2026: £9,494
• 23 October 2026: £8,995

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 8 September 2027.

It failed its MOT on 28 August 2026 (nearside rear brake disc in such a condition that it is seriously weakened; offside rear brake disc in such a condition that it is seriously weakened; nearside front emergency exit window cannot be opened from inside the vehicle) and passed 12 days later, on 9 September 2026.

There were no advisories at the latest test.

Mileage at that test: 100,188 miles, which matches the advertised 100,172 miles.

Advertised mileage is about 71,300 miles higher than the median mileage of a 2018 Mazda MX-5 on AskCar.

Similar cars

8 other 2018 Mazda MX-5 Sport NAV 2.0 petrol manual convertibles are for sale at UK dealers, from £12,832 to £16,995, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2018 Mazda MX-5 Sport NAV, 2.0 petrol convertible, white. Mileage: 69,989 miles. Price: £12,832, £3,837 more than this car. Dealer: Vertu Honda Truro in Truro. AskCar page: https://askcar.co.uk/car/mazda-mx-5-2018-e26d732ce3cf
• 2018 Mazda MX-5 Sport NAV, 2.0 petrol convertible, grey. Mileage: 69,588 miles. Price: £12,950, £3,955 more than this car. Dealer: Holdcroft Motor Group Wolverhampton Handpicked in Wolverhampton. AskCar page: https://askcar.co.uk/car/mazda-mx-5-2018-fbe8ee69d8ce
• 2018 Mazda MX-5 Sport NAV, 2.0 petrol convertible, grey. Mileage: 66,000 miles. Price: £13,500, £4,505 more than this car. Dealer: Mortimer Cars in Basingstoke. AskCar page: https://askcar.co.uk/car/mazda-mx-5-2018-25655e74fd9b