2018 Audi A3 Cabriolet 1.5 TFSI S Line

Overview

• Make: Audi
• Model: A3 Cabriolet
• Trim: S Line
• Version: 1.5 TFSI S Line S tronic FWD Euro 6 2dr (147 bhp)
• Year: 2018
• Mileage: 23,193 miles
• Fuel: Petrol
• Body: Convertible, 2 doors, 4 seats
• Engine: 1.5 litres, 147 bhp
• Gearbox: Automatic (S tronic)
• Drive: Front-wheel drive
• Colour: White
• CO2: 118 g/km
• Emissions standard: Euro 6, ULEZ compliant

About this car

The advertised mileage for this 2018 Audi A3 Cabriolet S Line is 23,193 miles. Priced at £17,199, it is advertised £1,355 below the AskCar estimate of £18,554. The AskCar estimate uses UK dealer asking prices, including 232 Audi A3 Cabriolet adverts, and accounts for the car’s age, mileage and specification. This car was first seen in our listings data 5 days ago. Its advertised mileage matches the government's MOT record. The seller is cinch Corby, based in North Northamptonshire. 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: £1,355 (7%) under the AskCar estimate of £18,554.

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 232 priced Audi A3 Cabriolet adverts across different ages and specifications, as of 2 November 2026.

Time on sale

AskCar first saw this 2018 Audi A3 Cabriolet advertised 5 days ago.

Price history

AskCar first saw this advert on 28 October 2026 at £16,999. Its asking price is now £17,199, £200 more.

Price changes recorded:

• 28 October 2026: £16,999
• 31 October 2026: £17,199

Mileage and MOT

MOT, from the government's MOT records (DVSA, the Driver and Vehicle Standards Agency), as of 2 November 2026: valid until 24 October 2027.

It has had 7 MOTs. The latest, on 25 October 2026, passed.

There were no advisories at the latest test.

Mileage at that test: 23,192 miles, which matches the advertised 23,193 miles.

Similar cars

4 other 2018 Audi A3 Cabriolet S Line 1.5 petrol automatic convertibles are for sale at UK dealers, from £11,290 to £20,990, as of 2 November 2026.

The 3 closest to this car in mileage:

• 2018 Audi A3 Cabriolet S Line, 1.5 petrol convertible, silver. Mileage: 12,005 miles. Price: £20,990, £3,791 more than this car. Dealer: Stratstone Shrewsbury Audi in Shrewsbury. AskCar page: https://askcar.co.uk/car/audi-a3-cabriolet-2018-f9ae8a8b0530
• 2018 Audi A3 Cabriolet S Line, 1.5 petrol convertible, white. Mileage: 37,000 miles. Price: £19,995, £2,796 more than this car. Dealer: Bedford Specialist Cars in Bedford. AskCar page: https://askcar.co.uk/car/audi-a3-cabriolet-2018-abbf129b49cb
• 2018 Audi A3 Cabriolet S Line, 1.5 petrol convertible, grey. Mileage: 84,406 miles. Price: £12,450, £4,749 less than this car. Dealer: NK Car Sales in Sheffield. AskCar page: https://askcar.co.uk/car/audi-a3-cabriolet-2018-401883ad6307