2018 Audi A3 Cabriolet prices
There are 9 used 2018 Audi A3 Cabriolet cars for sale from UK dealers on AskCar, as of 6 November 2026. The cheapest is £11,210.
Dealers lowered the asking price on more than half of 2018 Audi A3 Cabriolet cars: 5 of the 9 in the 14 days to 6 November 2026.
2018 Audi A3 Cabriolet against other years
A 2017 Audi A3 Cabriolet car has a typical asking price of £11,500, as of 6 November 2026.
AskCar lists 245 used Audi A3 Cabriolet across the UK, from 215 dealerships.
As of 6 November 2026, AskCar lists 598,752 cars and vans from 12,905 UK dealerships, read daily from dealer websites: over 99% of UK dealer used car adverts. No dealer pays to be listed.
2018 Audi A3 Cabriolet cars for sale now
This page picks out up to 10 cars in each of these groups: best value, cheapest, lowest mileage and recently reduced. A car in more than one group is listed in full once. The groups pick only from cars with photos and an AskCar estimate, priced at £500 or more and no more than 25% under that estimate. All 9 cars listed here meet these rules.
The AskCar estimate is our expected asking price for that one car, from its model, age, mileage and specification, using the 238 priced Audi A3 Cabriolet adverts on AskCar as of 6 November 2026. The figures on this page describe the cars advertised, not a valuation of every 2018 Audi A3 Cabriolet.
Each car: year, make, model, engine and trim, power, gearbox, fuel, body, doors, colour; mileage; price and its changes; how the price compares with the AskCar estimate; emissions standard and ULEZ compliance where it holds; MOT; dealer and town; AskCar page. Each car's AskCar page has its full price history and cheaper cars like it.
Best value 2018 Audi A3 Cabriolet: priced furthest below the AskCar estimate
Their asking prices run from £11,210 to £20,990.
- 2018 Audi A3 Cabriolet 1.6 TDI S Line, manual, diesel, convertible, 2 doors, 4 seats, black. Mileage: 49,255 miles. Price: £11,495, reduced by £500 from £11,995 since AskCar first saw it on 25 September 2026, 42 days ago. Good value: £1,821 (13%) under the AskCar estimate of £13,316. Euro 6 emissions standard. ULEZ compliant. Dealer: Culloden Car Sales in Inverness. AskCar page: https://askcar.co.uk/car/audi-a3-cabriolet-2018-391fd4099955
- 2018 Audi A3 Cabriolet 1.5 TFSI S Line, 147 bhp, automatic, petrol, convertible, 2 doors, 4 seats, white. Mileage: 23,193 miles. Price: £17,199, raised by £200 from £16,999 since AskCar first saw it on 28 October 2026, 9 days ago. Fair price: £1,369 (7%) under the AskCar estimate of £18,568. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 24 October 2027. Dealer: cinch Corby in Corby. AskCar page: https://askcar.co.uk/car/audi-a3-cabriolet-2018-2d638923e8d2
- 2018 Audi A3 Cabriolet 1.6 TDI S Line, 108 bhp, manual, diesel, convertible, 2 doors, 4 seats, blue. Mileage: 45,844 miles. Price: £11,999, reduced by £1,700 from £13,699 since AskCar first saw it on 28 May 2026, 162 days ago. Fair price: £849 (6%) under the AskCar estimate of £12,848. Euro 6 emissions standard. ULEZ compliant. MOT: the latest record we hold ran out on 3 November 2026; ask the dealer for the current MOT. Dealer: T Wall Approved in Kingswinford. AskCar page: https://askcar.co.uk/car/audi-a3-cabriolet-2018-f7ff48fd46bd
- 2018 Audi A3 Cabriolet 2.0 TDI S Line, 148 bhp, manual, diesel, convertible, 2 doors, 4 seats, grey. Mileage: 47,925 miles. Price: £13,650, reduced by £420 from £14,070 since AskCar first saw it on 26 September 2026, 41 days ago. Fair price: £964 (6%) under the AskCar estimate of £14,614. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 21 March 2027. Dealer: Evans Halshaw Hyundai Leicester in Leicester. AskCar page: https://askcar.co.uk/car/audi-a3-cabriolet-2018-f969f16e2a36
- 2018 Audi A3 Cabriolet 1.5 TFSI S Line, 147 bhp, automatic, petrol, convertible, 2 doors, 4 seats, white. Mileage: 92,953 miles. Price: £11,210, reduced by £480 from £11,690 since AskCar first saw it on 20 September 2026, 47 days ago. Fair price: £66 (under 1%) under the AskCar estimate of £11,276. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 17 September 2027. Dealer: Evans Halshaw Vauxhall Newport in Newport. AskCar page: https://askcar.co.uk/car/audi-a3-cabriolet-2018-3ea71be30724
- 2018 Audi A3 Cabriolet 1.5 S Line, 147 bhp, automatic, petrol, convertible, 2 doors, 4 seats, grey. Mileage: 84,406 miles. Price: £12,250, reduced by £400 from £12,650 since AskCar first saw it on 25 September 2026, 42 days ago. Fair price: £157 (1%) over the AskCar estimate of £12,093. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 31 May 2027. Dealer: NK Car Sales in Sheffield. AskCar page: https://askcar.co.uk/car/audi-a3-cabriolet-2018-401883ad6307
- 2018 Audi A3 Cabriolet 1.5 TFSI S Line, 147 bhp, automatic, petrol, convertible, 2 doors, 4 seats, silver. Mileage: 12,005 miles. Price: £20,990, unchanged since AskCar first saw it on 27 October 2026, 10 days ago. Fair price: £1,278 (6%) over the AskCar estimate of £19,712. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 14 September 2027. Dealer: Stratstone Shrewsbury Audi in Shrewsbury. AskCar page: https://askcar.co.uk/car/audi-a3-cabriolet-2018-f9ae8a8b0530
- 2018 Audi A3 Cabriolet 1.5 TFSI CoD Sport, 148 bhp, manual, petrol, convertible, 2 doors, 4 seats, red. Mileage: 40,000 miles. Price: £14,995, unchanged since AskCar first saw it on 10 October 2026, 27 days ago. Above the going rate: £1,140 (8%) over the AskCar estimate of £13,855. Euro 6 emissions standard. ULEZ compliant. MOT: valid until 17 July 2027. Dealer: MJ Autos in Birmingham. AskCar page: https://askcar.co.uk/car/audi-a3-cabriolet-2018-20379450fb9e
- 2018 Audi A3 Cabriolet 1.5 TFSI CoD S Line, 148 bhp, automatic, petrol, convertible, 2 doors, 4 seats, white. Mileage: 37,000 miles. Price: £19,995, unchanged since AskCar first saw it on 28 May 2026, 162 days ago. Above the going rate: £2,242 (12%) over the AskCar estimate of £17,753. Euro 6 emissions standard. ULEZ compliant. Dealer: Bedford Specialist Cars in Bedford. AskCar page: https://askcar.co.uk/car/audi-a3-cabriolet-2018-abbf129b49cb
Cheapest 2018 Audi A3 Cabriolet: the lowest asking prices
These 9 are priced £11,210 to £20,990. They have covered 12,005 to 92,953 miles.
- 2018 Audi A3 Cabriolet 1.5 TFSI S Line: £11,210, 92,953 miles. Listed in full under best value.
- 2018 Audi A3 Cabriolet 1.6 TDI S Line: £11,495, 49,255 miles. Listed in full under best value.
- 2018 Audi A3 Cabriolet 1.6 TDI S Line: £11,999, 45,844 miles. Listed in full under best value.
- 2018 Audi A3 Cabriolet 1.5 S Line: £12,250, 84,406 miles. Listed in full under best value.
- 2018 Audi A3 Cabriolet 2.0 TDI S Line: £13,650, 47,925 miles. Listed in full under best value.
- 2018 Audi A3 Cabriolet 1.5 TFSI CoD Sport: £14,995, 40,000 miles. Listed in full under best value.
- 2018 Audi A3 Cabriolet 1.5 TFSI S Line: £17,199, 23,193 miles. Listed in full under best value.
- 2018 Audi A3 Cabriolet 1.5 TFSI CoD S Line: £19,995, 37,000 miles. Listed in full under best value.
- 2018 Audi A3 Cabriolet 1.5 TFSI S Line: £20,990, 12,005 miles. Listed in full under best value.
Lowest-mileage 2018 Audi A3 Cabriolet
These 9 have covered 12,005 to 92,953 miles. Their asking prices run from £11,210 to £20,990.
- 2018 Audi A3 Cabriolet 1.5 TFSI S Line: £20,990, 12,005 miles. Listed in full under best value.
- 2018 Audi A3 Cabriolet 1.5 TFSI S Line: £17,199, 23,193 miles. Listed in full under best value.
- 2018 Audi A3 Cabriolet 1.5 TFSI CoD S Line: £19,995, 37,000 miles. Listed in full under best value.
- 2018 Audi A3 Cabriolet 1.5 TFSI CoD Sport: £14,995, 40,000 miles. Listed in full under best value.
- 2018 Audi A3 Cabriolet 1.6 TDI S Line: £11,999, 45,844 miles. Listed in full under best value.
- 2018 Audi A3 Cabriolet 2.0 TDI S Line: £13,650, 47,925 miles. Listed in full under best value.
- 2018 Audi A3 Cabriolet 1.6 TDI S Line: £11,495, 49,255 miles. Listed in full under best value.
- 2018 Audi A3 Cabriolet 1.5 S Line: £12,250, 84,406 miles. Listed in full under best value.
- 2018 Audi A3 Cabriolet 1.5 TFSI S Line: £11,210, 92,953 miles. Listed in full under best value.
Recently reduced 2018 Audi A3 Cabriolet: the biggest price reductions in the 14 days to 6 November 2026
The dealer lowered the asking price on each of these 5 in the 14 days to 6 November 2026. Their reductions since AskCar first saw them run from £400 to £1,700.
- 2018 Audi A3 Cabriolet 1.6 TDI S Line: £11,999, 45,844 miles. Listed in full under best value.
- 2018 Audi A3 Cabriolet 1.6 TDI S Line: £11,495, 49,255 miles. Listed in full under best value.
- 2018 Audi A3 Cabriolet 1.5 TFSI S Line: £11,210, 92,953 miles. Listed in full under best value.
- 2018 Audi A3 Cabriolet 2.0 TDI S Line: £13,650, 47,925 miles. Listed in full under best value.
- 2018 Audi A3 Cabriolet 1.5 S Line: £12,250, 84,406 miles. Listed in full under best value.
Audi A3 Cabriolet by gearbox, fuel and body
- Automatic Audi A3 Cabriolet (77 cars)
- Manual Audi A3 Cabriolet (166 cars)
- Petrol Audi A3 Cabriolet (126 cars)
- Diesel Audi A3 Cabriolet (118 cars)
Audi A3 Cabriolet prices by year
Audi A3 Cabriolet by trim
Audi A3 Cabriolet by price
Audi A3 Cabriolet near you
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