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Used convertible under £20,000 • 6,754 price-rated cars

Market overview: Convertible under £20,000 (October-2026): AutoUncle has analysed 6,754 used convertible cars for sale in this budget range. The most popular models are Mazda MX5, Mini Cooper Cabriolet, BMW Z4, and the median price is £8,574. convertible cars in this price segment typically come with petrol and manual. AutoUncle has rated 1,070 cars as listed below market value. The typical selling time is approx. 24 days, and 30.4% of listings have recently been reduced. (Source: AutoUncle market data, October-2026)

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Used Mini Cooper Cabriolet Exclusive 136 HP (100 kW) 2024 Black Cabriolet

(2024) Mini Cooper Cabriolet Exclusive 136 HP

Fair price

Estimated price £20,395

GU1 1RU Surrey, Surrey

139 g CO2/km comb. - 136 HP (100 kW) - 6.0 Mpg

Carwow

Used Mercedes E220 AMG line 194 HP (142 kW) 2020 Black Cabriolet

(2020) Mercedes E220 AMG line 194 HP

Fair price

Estimated price £22,102

BL9 6HH Greater Manchester, Manchester

170 g CO2/km comb. - 194 HP (142 kW) - 42.8 Mpg

Carwow

Used Mini Cooper S Cabriolet Premium Plus 178 HP (130 kW) 2023 Red Cabriolet

(2023) Mini Cooper S Cabriolet Premium Plus 178 HP

Fair price

Estimated price £20,816

RH10 1TN West Sussex, West Sussex

143 g CO2/km comb. - 178 HP (130 kW) - 6.1 Mpg

Carwow

Used Audi A5 Cabriolet S-Line 150 HP (110 kW) 2021 Blue Cabriolet

(2021) Audi A5 Cabriolet S-Line 150 HP

Good price

You save £2,010

DA2 7RB Kent, Kent

162 g CO2/km comb. - 150 HP (110 kW) - 7.1 Mpg

Price checked by AutoUncle

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Good price

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1 / 4

Used (2019) Mini Cooper Cabriolet Classic 136 HP | Good price

Hatch Convertible 1.5 Classic II

Jul 2019
40,000 miles
Trim level: Classic
1.5L Petrol
Cabriolet
Automatic
136 HP (100 kW)
CO2 emissions: 118 g CO2/km comb.
47.1 mpg
Details

Good price

£12,796

LE12 Loughborough, Leicestershire

Availability verified

-5%

1 / 4

Used (2018) Mercedes SLC200 AMG line 184 HP | Good price

SLC AMG Line 2dr

2018
49,430 miles
Trim level: AMG line
2.0L Petrol
Cabriolet
Manual
184 HP (135 kW)
CO2 emissions: 167 g CO2/km comb.
40.4 mpg
Details

Good price

£14,299

£15,099

CW73AL Cheshire West And Chester, Cheshire

Availability verified

-17%

1 / 4

Used (2020) Mercedes C300 AMG Line Premium 245 HP | Good price

C Class Amg Line Premium D Auto

2020
62,488 miles
Trim level: AMG Line Premium
2.0L Diesel
Cabriolet
Automatic
245 HP (180 kW)
CO2 emissions: 153 g CO2/km comb.
5.8 mpg
Details

Good price

£16,169

£19,550

BS24 0JN Lympsham, Somerset

Availability verified

-10%

1 / 4

Used (2019) Mercedes C300 AMG line 245 HP | Good price

C-Class Cabriolet 2019 AMG Line

2019
67,905 miles
Trim level: AMG line
2.0L Diesel
Cabriolet
Automatic
245 HP (180 kW)
CO2 emissions: 153 g CO2/km comb.
5.8 mpg
Details

Good price

£14,811

£16,517

BS5 9PJ Bristol City, Bristol

Availability verified

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Used Mini John Cooper Works Cabriolet Premium Plus 231 HP (169 kW) 2022 Black Cabriolet

(2022) Mini John Cooper Works Cabriolet Premium Plus 231 HP

Super price

You save £2,715

BS22 8NA North Somerset, Somerset

161 g CO2/km comb. - 231 HP (169 kW) - 6.8 Mpg

Carwow

Used VW T-Roc Cabriolet R-line 150 HP (110 kW) 2022 Blue Cabriolet

(2022) VW T-Roc Cabriolet R-line 150 HP

Fair price

B65SU Birmingham, West Midlands

142 g CO2/km comb. - 150 HP (110 kW) - 6.1 Mpg

Carwow

Used Mercedes E220 AMG line 194 HP (142 kW) 2020 White Cabriolet

(2020) Mercedes E220 AMG line 194 HP

Fair price

M417TB Urmston, Manchester

169 g CO2/km comb. - 194 HP (142 kW) - 5.8 Mpg

Carwow

Used Mazda MX5 Exclusive-Line 132 HP (97 kW) 2023 Grey Cabriolet

(2023) Mazda MX5 Exclusive-Line 132 HP

Fair price

Estimated price £21,080

PE1 5XL Peterborough, Cambridgeshire

140 g CO2/km comb. - 132 HP (97 kW) - 6.3 Mpg

-4%

1 / 4

Used (2019) Mini Cooper Cabriolet Classic 136 HP | Good price

Convertible 2019 Classic 1.5

2019
30,040 miles
Trim level: Classic
1.5L Petrol
Cabriolet
Manual
136 HP (100 kW)
CO2 emissions: 139 g CO2/km comb.
6.1 mpg
Details

Good price

£11,599

£12,199

CW73AL Cheshire West And Chester, Cheshire

Availability verified

-6%

1 / 3

Used (2019) Mini Cooper S Cabriolet Classic 192 HP | Good price

Classic Auto Convertible

2019
40,683 miles
Trim level: Classic
2.0L Petrol
Cabriolet
Automatic
192 HP (141 kW)
CO2 emissions: 148 g CO2/km comb.
6.4 mpg
Details

Good price

£13,650

£14,577

BS5 9PJ Bristol City, Bristol

Availability verified

-4%

1 / 4

Used (2017) Mazda MX5 Inclusive 160 HP | Good price

2.0 Sport Nav 2dr

2017
38,677 miles
Trim level: Inclusive
2.0L Petrol
Cabriolet
Manual
160 HP (117 kW)
CO2 emissions: 161 g CO2/km comb.
40.9 mpg
Details

Good price

£13,999

£14,599

CW73AL Cheshire West And Chester, Cheshire

Availability verified

-7%

1 / 3

Used (2020) Mercedes E220 AMG line 194 HP | Good price

Amg Line Convertible

2020
75,301 miles
Trim level: AMG line
2.0L Diesel
Cabriolet
Automatic
194 HP (142 kW)
CO2 emissions: 169 g CO2/km comb.
5.8 mpg
Details

Good price

£16,998

£18,341

RM13 8RH Greater London, London

Availability verified

-13%

1 / 4

Used (2018) Mazda MX5 Inclusive 160 HP | Good price

2.0 SKYACTIV-G Z-Sport Euro 6

2018
18,340 miles
Trim level: Inclusive
2.0L Petrol
Cabriolet
Manual
160 HP (117 kW)
CO2 emissions: 161 g CO2/km comb.
6.9 mpg
Details

Good price

£16,495

£18,995

CT20EZ Kent, Kent

Availability verified

-11%

1 / 4

Used (2018) Mercedes E220 AMG line 194 HP | Good price

9G-Tronic

2018
59,610 miles
Trim level: AMG line
2.0L Diesel
Cabriolet
Automatic
194 HP (142 kW)
CO2 emissions: 170 g CO2/km comb.
6.4 mpg
Details

Good price

£15,900

£17,875

RG12 9FR Berkshire, Berkshire

Availability verified

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Used VW T-Roc Cabriolet R-line 150 HP (110 kW) 2022 Black Cabriolet

(2022) VW T-Roc Cabriolet R-line 150 HP

Fair price

CV6 4DG West Midlands, West Midlands

142 g CO2/km comb. - 150 HP (110 kW) - 6.1 Mpg

Carwow

Used BMW 640 Cabriolet M Sport 313 HP (230 kW) 2016 Black Cabriolet

(2016) BMW 640 Cabriolet M Sport 313 HP

Fair price

WD3 3RT Croxley Green, Hertfordshire

153 g CO2/km comb. - 313 HP (230 kW) - 5.8 Mpg

Carwow

Used Mercedes SLC300 AMG line 245 HP (180 kW) 2019 Grey Cabriolet

(2019) Mercedes SLC300 AMG line 245 HP

Fair price

SL1 5PR Berkshire, Berkshire

178 g CO2/km comb. - 245 HP (180 kW) - 7.5 Mpg

Carwow

Used Mazda MX5 Inclusive 132 HP (97 kW) 2019 Grey Cabriolet

(2019) Mazda MX5 Inclusive 132 HP

Fair price

Estimated price £16,888

CV34 6RH Royal Leamington Spa, Warwickshire

142 g CO2/km comb. - 132 HP (97 kW) - 6.3 Mpg

-14%

1 / 4

Used (2018) Audi TT Roadster Sport 180 HP | Super price

2018 Sport 1.8T FSI Sport 2dr 1.8T

2018
28,648 miles
Trim level: Sport
1.8L Petrol
Cabriolet
Manual
180 HP (132 kW)
CO2 emissions: 142 g CO2/km comb.
6.1 mpg
Details

Super price

£13,490

£15,690

RG12 9FR Berkshire, Berkshire

Availability verified

1 / 4

Used (2020) Mini Cooper Cabriolet Classic 136 HP | Good price

Convertible 1.5 Classic II 2dr

2020
26,660 miles
Trim level: Classic
1.5L Petrol
Cabriolet
Manual
136 HP (100 kW)
CO2 emissions: 139 g CO2/km comb.
6.1 mpg
Details

Good price

£12,395

£12,495

S80 2QD Nottinghamshire, Nottinghamshire

Availability verified

New

Used (2018) Audi A5 Cabriolet S-Line 190 HP | Good price

2.0 TDI Quattro S Line 2dr S

2018
81,213 miles
Trim level: S-Line
2.0L Diesel
Cabriolet
Automatic
190 HP (139 kW)
CO2 emissions: 127 g CO2/km comb.
4.9 mpg
Details

Good price

£12,200

WD3 3RT Croxley Green, Hertfordshire

Availability verified

-4%

1 / 4

Used (2024) Mazda MX5 Exclusive-Line 132 HP | Good price

2024 | 1.5 SKYACTIV-G Exclusiv

2024
6,366 miles
Trim level: Exclusive-Line
1.5L Petrol
Cabriolet
Manual
132 HP (97 kW)
CO2 emissions: 140 g CO2/km comb.
6.3 mpg
Details

Good price

£19,850

£20,800

LS27 0TS Morley, West Yorkshire

Availability verified

-10%

1 / 4

Used (2019) Mercedes E220 AMG line 194 HP | Good price

AMG Line Cabriolet 2dr Diesel

2019
33,452 miles
Trim level: AMG line
2.0L Diesel
Cabriolet
Automatic
194 HP (142 kW)
CO2 emissions: 169 g CO2/km comb.
5.8 mpg
Details

Good price

£19,680

£21,950

WS11 8LX Great Wyrley, Staffordshire

Availability verified

-8%

1 / 4

Used (2021) VW T-Roc Cabriolet R-line 150 HP | Good price

2022 R Line 1.5 TSI R-Line 2dr 1.5

2021
55,962 miles
Trim level: R-line
1.5L Petrol
Cabriolet
Manual
150 HP (110 kW)
CO2 emissions: 156 g CO2/km comb.
6.9 mpg
Details

Good price

£15,390

£16,860

WA2 8JH Warrington, Cheshire

Availability verified

-2%

1 / 4

Used (2022) Mini Cooper S Cabriolet Exclusive 178 HP | Good price

Convertible 2.0 Exclusive 2dr

2022
52,809 miles
Trim level: Exclusive
2.0L Petrol
Cabriolet
Automatic
178 HP (130 kW)
CO2 emissions: 145 g CO2/km comb.
6.1 mpg
Details

Good price

£15,850

£16,250

NR3 2AW Norfolk, Norfolk

Availability verified

New

1 / 4

Used (2018) Mercedes C250 AMG line 204 HP | Good price

C-Class Cabriolet 2018 AMG Line

2018
63,491 miles
Trim level: AMG line
2.1L Diesel
Cabriolet
Automatic
204 HP (150 kW)
CO2 emissions: 126 g CO2/km comb.
4.9 mpg
Details

Good price

£15,882

IP3 9SJ Suffolk, Suffolk

Availability verified

New

1 / 4

New (2026) Fiat 500e Icon 118 HP | Good price

Convertible 2026 Icon 87kW 42kWh

2026
0 miles
Trim level: Icon
Electric
Cabriolet
Automatic
Drive range: 314 miles
86 kW (118 HP)
CO2 emissions: 0 g CO2/km comb.
14.3 kWh/100 km
Details

Good price

£18,995

SS15 6RW Essex, Essex

Availability verified

-10%

1 / 4

Used (2017) Fiat 124 Spider Classica 140 HP | Super price

2017 Classica 1.4 Multiair

2017
37,000 miles
Trim level: Classica
1.4L Petrol
Cabriolet
Manual
140 HP (102 kW)
CO2 emissions: 148 g CO2/km comb.
6.4 mpg
Details

Super price

£9,790

£10,990

BL2 2BD Greater Manchester, Manchester

Availability verified

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Used Mini Cooper S Cabriolet Sport 178 HP (130 kW) 2022 Silver Cabriolet

(2022) Mini Cooper S Cabriolet Sport 178 HP

Good price

You save £1,300

WD3 3RT Croxley Green, Hertfordshire

142 g CO2/km comb. - 178 HP (130 kW) - 6.1 Mpg

Carwow

Used Mazda MX5 Inclusive 184 HP (135 kW) 2022 Grey Cabriolet

(2022) Mazda MX5 Inclusive 184 HP

Fair price

Estimated price £21,275

WS11 8LX Great Wyrley, Staffordshire

155 g CO2/km comb. - 184 HP (135 kW) - 6.9 Mpg

Carwow

Used VW T-Roc Cabriolet R-line 150 HP (110 kW) 2020 White Cabriolet

(2020) VW T-Roc Cabriolet R-line 150 HP

Fair price

BB9 7DU Lancashire, Lancashire

155 g CO2/km comb. - 150 HP (110 kW) - 6.8 Mpg

Carwow

Used Mercedes C300 AMG Line Premium 245 HP (180 kW) 2020 Blue Cabriolet

(2020) Mercedes C300 AMG Line Premium 245 HP

Fair price

Estimated price £21,302

IP25 6HW Watton, Norfolk

153 g CO2/km comb. - 245 HP (180 kW) - 48.7 Mpg

-4%

1 / 4

Used (2020) Mercedes E220 AMG line 194 HP | Good price

Amg Line Auto Convertible

2020
70,000 miles
Trim level: AMG line
2.0L Diesel
Cabriolet
Automatic
194 HP (142 kW)
CO2 emissions: 169 g CO2/km comb.
5.8 mpg
Details

Good price

£17,997

£18,928

RM13 8RH Greater London, London

Availability verified

-5%

1 / 4

Used (2017) Mini Cooper Cabriolet 136 HP | Good price

Convertible 1.5 2dr

2017
17,971 miles
1.5L Petrol
Cabriolet
Manual
136 HP (100 kW)
CO2 emissions: 114 g CO2/km comb.
5 mpg
Details

Good price

£10,650

£11,250

WD3 3RT Croxley Green, Hertfordshire

Availability verified

-4%

1 / 4

Used (2018) Audi A5 Cabriolet S-Line 190 HP | Good price

2.0 TFSI S Line 2dr

2018
44,069 miles
Trim level: S-Line
2.0L Petrol
Cabriolet
Manual
190 HP (139 kW)
CO2 emissions: 137 g CO2/km comb.
5.9 mpg
Details

Good price

£13,400

£14,000

WD3 3RT Croxley Green, Hertfordshire

Availability verified

-12%

1 / 4

Used (2017) Audi A3 Cabriolet S-Line 110 HP | Good price

1.6 TDI S line Convertible 2dr

2017
69,204 miles
Trim level: S-Line
1.6L Diesel
Cabriolet
Manual
110 HP (80 kW)
CO2 emissions: 113 g CO2/km comb.
4 mpg
Details

Good price

£9,150

£10,450

N11 1GN Greater London, London

Availability verified

-1%

1 / 4

Used (2024) Fiat 500C Lounge 69 HP | Good price

2024 Lounge 1.2

2024
29,236 miles
Trim level: Lounge
1.2L Petrol
Cabriolet
Manual
69 HP (50 kW)
CO2 emissions: 131 g CO2/km comb.
5.7 mpg
Details

Good price

£9,190

£9,315

SO31 7FL Lower Swanwick, Hampshire

Availability verified

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Used VW T-Roc Cabriolet R-line 150 HP (110 kW) 2023 Silver Cabriolet

(2023) VW T-Roc Cabriolet R-line 150 HP

Good price

You save £1,810

S60 5BD Sheffield, South Yorkshire

142 g CO2/km comb. - 150 HP (110 kW) - 6.1 Mpg

Carwow

Used Mini Cooper Cabriolet Exclusive 136 HP (100 kW) 2023 White Cabriolet

(2023) Mini Cooper Cabriolet Exclusive 136 HP

Fair price

Estimated price £20,310

LE12 7AT Mountsorrel, Leicestershire

139 g CO2/km comb. - 136 HP (100 kW) - 6.0 Mpg

Carwow

Used Mini Cooper Cabriolet Classic 136 HP (100 kW) 2023 Green Cabriolet

(2023) Mini Cooper Cabriolet Classic 136 HP

Good price

You save £1,396

TS18 3RB Stockton-On-Tees, Durham

137 g CO2/km comb. - 136 HP (100 kW) - 5.9 Mpg

Carwow

Used BMW 435 M Sport 313 HP (230 kW) 2020 White Cabriolet

(2020) BMW 435 M Sport 313 HP

Fair price

Estimated price £21,158

CM23 3LJ Hertfordshire, Hertfordshire

189 g CO2/km comb. - 313 HP (230 kW) - 7.2 Mpg

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121,993 cars

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2,930 cars

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15,390 cars

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