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 4WD Euro 6 (s/s) 2dr (187 bhp)
• Year: 2018
• Mileage: 81,213 miles
• Fuel: Diesel
• Body: Convertible, 2 doors, 4 seats
• Engine: 2.0 litres, 187 bhp
• Gearbox: Automatic (S tronic)
• Drive: Four-wheel drive
• Colour: Grey
• CO2: 127 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

This 2018 Audi A5 Cabriolet S Line is advertised with 81,213 miles, approximately 33,700 above the typical mileage for its age. Its asking price of £12,200 is £360 below the AskCar estimate of £12,560. To work out the AskCar estimate, we analyse UK dealer adverts for 211 Audi A5 Cabriolet cars across different ages and specifications. We first recorded this car for sale 5 days ago. The government's MOT record matches its advertised mileage. It is for sale at Car Planet Watford in Rickmansworth. 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: £360 (2%) under the AskCar estimate of £12,560.

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 211 priced Audi A5 Cabriolet adverts across different ages and specifications, as of 2 November 2026.

A 2018 Audi A5 Cabriolet with the 2.0 diesel engine is typically advertised at £14,800: the median of the 20 for sale on AskCar, as of 2 November 2026.

Time on sale

AskCar first saw this 2018 Audi A5 Cabriolet advertised 5 days ago.

Price history

AskCar first saw this advert on 28 October 2026 at £12,200. 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 2 November 2026: valid until 9 January 2027.

It has had 7 MOTs. The latest, on 23 December 2025, passed.

Advisories at the latest test: nearside rear tyre has a cut but not deep enough to reach the ply or cords.

Mileage at that test: 72,719 miles, which matches the advertised 81,213 miles.

Advertised mileage is about 33,700 miles higher 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 £17,950, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A5 Cabriolet S Line, 2.0 diesel convertible, white. Mileage: 89,000 miles. Price: £11,990, £210 less than this car. Dealer: SR Motor Company in Hillington. AskCar page: https://askcar.co.uk/car/audi-a5-cabriolet-2018-1e21dd43d91d
• 2018 Audi A5 Cabriolet S Line, 2.0 diesel convertible, grey. Mileage: 56,731 miles. Price: £13,995, £1,795 more 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, black. Mileage: 36,011 miles. Price: £17,950, £5,750 more than this car. Dealer: M B Cars London in St Albans. AskCar page: https://askcar.co.uk/car/audi-a5-cabriolet-2018-56365cfca713