2018 Audi A5 Cabriolet 2.0 TDI S Line

Overview

• Make: Audi
• Model: A5 Cabriolet
• Trim: S Line
• Version: 2.0 TDI S Line S tronic FWD Euro 6 (s/s) 2dr (187 bhp)
• Year: 2018
• Mileage: 36,011 miles
• Fuel: Diesel
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: Black
• CO2: 122 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Audi A5 Cabriolet S Line has covered 36,011 miles, around 11,700 fewer miles than is typical for its age. The AskCar estimate for this car is £16,917. It is priced at £17,950, which is £1,033 above that estimate. To work out the AskCar estimate, we analyse UK dealer adverts for 212 Audi A5 Cabriolet cars across different ages and specifications. We have tracked this advert for 160 days. Our latest MOT record expired on 29 March 2026. Check the current position with the dealer. Its advertised mileage matches the government's MOT record. It is advertised by M B Cars London in St. Albans. 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: £1,033 (6%) over the AskCar estimate of £16,917.

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 212 priced Audi A5 Cabriolet adverts across different ages and specifications, as of 4 November 2026.

A 2018 Audi A5 Cabriolet with the 2.0 diesel engine is typically advertised at £14,600: the median of the 21 for sale on AskCar, as of 4 November 2026.

Time on sale

This 2018 Audi A5 Cabriolet has been on sale for at least 160 days.

Price history

AskCar first saw this advert on 28 May 2026 at £17,950. Its asking price has not changed.

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 4 November 2026: the latest record we hold ran out on 29 March 2026; ask the dealer for the current MOT.

It has had 5 MOTs. The latest, on 17 March 2025, passed.

There were no advisories at the latest test.

Mileage at that test: 33,014 miles, which matches the advertised 36,011 miles.

Advertised mileage is about 11,700 miles lower than the median mileage of a 2018 Audi A5 Cabriolet on AskCar.

Similar cars

3 other 2018 Audi A5 Cabriolet S Line 2.0 diesel automatic convertibles are for sale at UK dealers, from £11,990 to £13,995, as of 4 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A5 Cabriolet S Line, 2.0 diesel convertible, grey. Mileage: 56,731 miles. Price: £13,995, £3,955 less than this car. Dealer: First Time Motors in Portsmouth. AskCar page: https://askcar.co.uk/car/audi-a5-cabriolet-2018-a4a24cae0f46
• 2018 Audi A5 Cabriolet S Line, 2.0 diesel convertible, grey. Mileage: 81,213 miles. Price: £12,200, £5,750 less than this car. Dealer: Car Planet Watford in Watford. AskCar page: https://askcar.co.uk/car/audi-a5-cabriolet-2018-ebcd7b9e75ff
• 2018 Audi A5 Cabriolet S Line, 2.0 diesel convertible, white. Mileage: 89,000 miles. Price: £11,990, £5,960 less than this car. Dealer: SR Motor Company in Hillington. AskCar page: https://askcar.co.uk/car/audi-a5-cabriolet-2018-1e21dd43d91d