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Audi A3 (petrol) • 2,999 cars with Valuation

Market overview: Petrol Audi A3 (September-2026): There are currently 2,999 used petrol Audi A3 cars for sale. Prices range from £3,580 to £30,831, with a median price of £17,717. AutoUncle has identified 491 cars as being offered below market price. The typical selling time for a petrol Audi A3 is approximately 19 days, and 42.6% of the listings have recently been reduced in price (Source: AutoUncle market data, September-2026).

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Sandicliffe.co.uk

Used Audi A3 S-Line 110 HP (80 kW) 2023 Blue Sedan

(2023) Audi A3 S-Line 110 HP

Fair price

Estimated price £18,224

LE2 6BW Leicester, Leicestershire

120 g CO2/km comb. - 110 HP (80 kW) - 5.3 Mpg

Sandicliffe.co.uk

Used Audi A3 S-Line 150 HP (110 kW) 2022 White Sedan

(2022) Audi A3 S-Line 150 HP

Good price

You save £1,499

LN2 4LD Lincolnshire, Lincolnshire

128 g CO2/km comb. - 150 HP (110 kW) - 5.6 Mpg

Carwow

Used Audi A3 S-Line 150 HP (110 kW) 2022 Black Sedan

(2022) Audi A3 S-Line 150 HP

Fair price

Estimated price £16,689

ST3 7PG Rough Close, Staffordshire

124 g CO2/km comb. - 150 HP (110 kW) - 5.5 Mpg

Carwow

Used Audi A3 Sport 150 HP (110 kW) 2024 Sedan

(2024) Audi A3 Sport 150 HP

Super price

You save £2,505

S80 2QD Nottinghamshire, Nottinghamshire

128 g CO2/km comb. - 150 HP (110 kW) - 5.6 Mpg

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Used (2022) Audi A3 S-Line 150 HP | Good price

35 TFSI S Line 5dr Hatchback

Sep 2022
71,716 miles
Trim level: S-Line
1.5L Petrol
Sedan
Manual
150 HP (110 kW)
CO2 emissions: 128 g CO2/km comb.
5.6 mpg
Details

Good price

£14,701

£14,990

LN2 4LD Lincolnshire, Lincolnshire

Availability verified

-7%

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Used (2023) Audi A3 Sport 150 HP | Super price

1.5 TFSI 35 Sport Saloon 4dr

2023
23,818 miles
Trim level: Sport
1.5L Petrol
Sedan
Automatic
150 HP (110 kW)
CO2 emissions: 124 g CO2/km comb.
5.5 mpg
Details

Super price

£18,400

£19,900

S60 5BD Sheffield, South Yorkshire

Availability verified

-1%

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Used (2022) Audi A3 Sport 150 HP | Good price

Saloon 2022 Sport 35 TFSI

2022
15,984 miles
Trim level: Sport
1.5L Petrol
Sedan
Manual
150 HP (110 kW)
CO2 emissions: 128 g CO2/km comb.
5.6 mpg
Details

Good price

£17,442

£17,700

LS27 0TS Morley, West Yorkshire

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Used (2024) Audi A3 S-Line 110 HP | Super price

Saloon 2024 S Line 30 TFSI S Line

2024
41,935 miles
Trim level: S-Line
1.0L Petrol
Sedan
Manual
110 HP (80 kW)
CO2 emissions: 128 g CO2/km comb.
5.7 mpg
Details

Super price

£14,935

NN12 West Northamptonshire, Northamptonshire

Availability verified

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Used Audi A3 S-Line 110 HP (80 kW) 2021 Red Sedan

(2021) Audi A3 S-Line 110 HP

Fair price

N11 1GN Greater London, London

120 g CO2/km comb. - 110 HP (80 kW) - 5.3 Mpg

Carwow

Used Audi A3 S-Line 110 HP (80 kW) 2022 Grey Sedan

(2022) Audi A3 S-Line 110 HP

Fair price

Estimated price £17,339

LE12 7AT Mountsorrel, Leicestershire

112 g CO2/km comb. - 110 HP (80 kW) - 4.9 Mpg

Carwow

Used Audi A3 Sport 110 HP (80 kW) 2022 Black Sedan

(2022) Audi A3 Sport 110 HP

Fair price

B78 3JF Staffordshire, Staffordshire

125 g CO2/km comb. - 110 HP (80 kW) - 5.5 Mpg

Carwow

Used Audi A3 Sport 116 HP (85 kW) 2019 Grey Sedan

(2019) Audi A3 Sport 116 HP

Fair price

Estimated price £13,179

TN38 9QQ Hastings, East Sussex

130 g CO2/km comb. - 116 HP (85 kW) - 5.8 Mpg

New

Used (2024) Audi A3 S-Line 150 HP | Good price

Saloon 2024 S Line 35 TFSI S Line

2024
36,350 miles
Trim level: S-Line
1.5L Petrol
Sedan
Automatic
150 HP (110 kW)
CO2 emissions: 131 g CO2/km comb.
5.8 mpg
Details

Good price

£18,495

BL13DE

Availability verified

-4%

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Used (2022) Audi A3 S-Line 110 HP | Good price

Saloon 2022 S Line 30 TFSI

2022
21,342 miles
Trim level: S-Line
1.0L Petrol
Sedan
Manual
110 HP (80 kW)
CO2 emissions: 128 g CO2/km comb.
5.3 mpg
Details

Good price

£16,849

£17,593

LE12 7AT Mountsorrel, Leicestershire

Availability verified

-5%

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Used (2022) Audi A3 Sport 150 HP | Good price

Sport 35 TFSI 150 PS S tronic

2022
11,950 miles
Trim level: Sport
1.5L Petrol
Sedan
Automatic
150 HP (110 kW)
CO2 emissions: 127 g CO2/km comb.
5.5 mpg
Details

Good price

£18,950

£19,950

ST4 4DD Stoke-On-Trent, Staffordshire

Availability verified

-4%

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Used (2024) Audi A3 S-Line 110 HP | Super price

Saloon 2024 S Line 30 TFSI S Line

2024
21,342 miles
Trim level: S-Line
1.5L Petrol
Sedan
Manual
110 HP (80 kW)
CO2 emissions: 128 g CO2/km comb.
5.7 mpg
Details

Super price

£16,835

£17,593

LE12 7AT Mountsorrel, Leicestershire

Availability verified

New

Used (2024) Audi A3 S-Line 110 HP | Good price

Saloon 2024 S Line 30 TFSI S Line

2024
12,650 miles
Trim level: S-Line
1.0L Petrol
Sedan
Automatic
110 HP (80 kW)
CO2 emissions: 120 g CO2/km comb.
5.3 mpg
Details

Good price

£19,450

W5 5JN Greater London, London

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1 / 2

Used (2024) Audi A3 Sport 150 HP | Super price

Saloon 2024 Sport 35 TFSI Sport

2024
28,480 miles
Trim level: Sport
1.5L Petrol
Sedan
Manual
150 HP (110 kW)
CO2 emissions: 128 g CO2/km comb.
5.6 mpg
Details

Super price

£17,295

S80 2QD Nottinghamshire, Nottinghamshire

Availability verified

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Used Audi A3 Sport 150 HP (110 kW) 2023 Black Sedan

(2023) Audi A3 Sport 150 HP

Super price

You save £2,405

S80 2QD Nottinghamshire, Nottinghamshire

128 g CO2/km comb. - 150 HP (110 kW) - 5.6 Mpg

Carwow

Used Audi A3 S-Line 150 HP (110 kW) 2019 Grey Sedan

(2019) Audi A3 S-Line 150 HP

Fair price

You save £1,020

G3 6ED Glasgow City, Glasgow

145 g CO2/km comb. - 150 HP (110 kW) - 6.4 Mpg

Carwow

Used Audi A3 S-Line 110 HP (80 kW) 2023 Grey Sedan

(2023) Audi A3 S-Line 110 HP

Fair price

Estimated price £17,773

PR2 2DF Lancashire, Lancashire

128 g CO2/km comb. - 110 HP (80 kW) - 5.7 Mpg

Carwow

Used Audi A3 Black Edition 150 HP (110 kW) 2017 Grey Sedan

(2017) Audi A3 Black Edition 150 HP

Fair price

Estimated price £16,287

BL9 6HH Greater Manchester, Manchester

109 g CO2/km comb. - 150 HP (110 kW) - 4.9 Mpg

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Used (2023) Audi A3 Sport 110 HP | Good price

Saloon 2023 Sport 30 TFSI

2023
30,819 miles
Trim level: Sport
1.0L Petrol
Sedan
Manual
110 HP (80 kW)
CO2 emissions: 125 g CO2/km comb.
5.5 mpg
Details

Good price

£16,220

£16,350

CA3 0HA Cumberland, Cumbria

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1 / 4

Used (2022) Audi A3 Sport 150 HP | Good price

1.5 TFSI 35 Sport Saloon 4dr

2022
67,625 miles
Trim level: Sport
1.5L Petrol
Sedan
Manual
150 HP (110 kW)
CO2 emissions: 128 g CO2/km comb.
5.6 mpg
Details

Good price

£14,310

£14,260

WA2 8JH Warrington, Cheshire

Availability verified

New

Used (2024) Audi A3 S-Line 150 HP | Good price

Saloon 2024 S Line 35 TFSI S Line

2024
32,782 miles
Trim level: S-Line
1.5L Petrol
Sedan
Automatic
150 HP (110 kW)
CO2 emissions: 131 g CO2/km comb.
5.8 mpg
Details

Good price

£18,490

BB1 3HT Blackburn With Darwen, Lancashire

Availability verified

-7%

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Used (2024) Audi A3 S-Line 110 HP | Super price

Saloon 2024 S Line 30 TFSI S Line

2024
55,214 miles
Trim level: S-Line
1.5L Petrol
Sedan
Manual
110 HP (80 kW)
CO2 emissions: 128 g CO2/km comb.
5.7 mpg
Details

Super price

£15,288

£16,508

SO31 7FL Lower Swanwick, Hampshire

Availability verified

1 / 1

New (2026) Audi A3 Sport 116 HP | Good price

- Saloon 1.5 TFSI 116 Sport 4dr

2026
0 miles
Trim level: Sport
1.5L Petrol
Sedan
Manual
116 HP (85 kW)
CO2 emissions: 123 g CO2/km comb.
5.4 mpg
Details

Good price

£29,964

WA5 7YD Warrington, Cheshire

Availability verified

New (2026) Audi A3 Sport 116 HP | Good price

- Saloon 1.5 TFSI 116 Sport 4dr

2026
0 miles
Trim level: Sport
1.5L Petrol
Sedan
Manual
116 HP (85 kW)
CO2 emissions: 123 g CO2/km comb.
5.4 mpg
Details

Good price

£29,419

BL2 1NN Greater Manchester, Manchester

Availability verified

1 / 1

New (2026) Audi A3 Sport 116 HP | Good price

- Saloon 1.5 TFSI 116 Sport 4dr S

2026
0 miles
Trim level: Sport
1.5L Petrol
Sedan
Automatic
116 HP (85 kW)
CO2 emissions: 117 g CO2/km comb.
5.1 mpg
Details

Good price

£31,436

WA5 7YD Warrington, Cheshire

Availability verified

-2%

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Used (2024) Audi A3 S-Line 110 HP | Good price

Saloon 2024 S Line 30 TFSI S Line

2024
46,784 miles
Trim level: S-Line
1.0L Petrol
Sedan
Automatic
110 HP (80 kW)
CO2 emissions: 120 g CO2/km comb.
5.3 mpg
Details

Good price

£16,807

£17,294

DL14 9TW Tindale Crescent, Durham

Availability verified

-1%

1 / 3

Used (2024) Audi A3 S-Line 110 HP | Super price

Saloon 2024 S Line 30 TFSI S Line

2024
41,935 miles
Trim level: S-Line
1.5L Petrol
Sedan
Manual
110 HP (80 kW)
CO2 emissions: 128 g CO2/km comb.
5.7 mpg
Details

Super price

£15,220

£15,462

DL14 9TW Tindale Crescent, Durham

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Used (2023) Audi A3 Sport 150 HP | Super price

Saloon 2023 Sport 35 TFSI

2023
28,480 miles
Trim level: Sport
1.5L Petrol
Sedan
Manual
150 HP (110 kW)
CO2 emissions: 128 g CO2/km comb.
5.6 mpg
Details

Super price

£17,295

£16,995

S80 2QD Nottinghamshire, Nottinghamshire

Availability verified

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Used Audi A3 Sport 150 HP (110 kW) 2023 Silver Sedan

(2023) Audi A3 Sport 150 HP

Fair price

You save £1,003

NE29 7TE Tyne And Wear, Tyne And Wear

128 g CO2/km comb. - 150 HP (110 kW) - 5.6 Mpg

Carwow

Used Audi A3 S-Line 150 HP (110 kW) 2022 Blue Sedan

(2022) Audi A3 S-Line 150 HP

Fair price

Estimated price £18,012

NE29 7TE Tyne And Wear, Tyne And Wear

128 g CO2/km comb. - 150 HP (110 kW) - 5.6 Mpg

Carwow

Used Audi A3 S-Line 110 HP (80 kW) 2021 Grey Sedan

(2021) Audi A3 S-Line 110 HP

Fair price

LE12 7AT Mountsorrel, Leicestershire

128 g CO2/km comb. - 110 HP (80 kW) - 5.7 Mpg

Carwow

Used Audi A3 S-Line 150 HP (110 kW) 2019 Black Sedan

(2019) Audi A3 S-Line 150 HP

Fair price

Estimated price £15,180

TW15 1RZ Surrey, Surrey

145 g CO2/km comb. - 150 HP (110 kW) - 6.4 Mpg

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Used (2023) Audi A3 Sport 110 HP | Super price

Saloon 2023 Sport 30 TFSI

2023
50,140 miles
Trim level: Sport
1.0L Petrol
Sedan
Manual
110 HP (80 kW)
CO2 emissions: 120 g CO2/km comb.
5.3 mpg
Details

Super price

£14,123

£15,097

SO31 7FL Lower Swanwick, Hampshire

Availability verified

-4%

1 / 4

Used (2024) Audi A3 Sport 110 HP | Good price

Saloon 2024 Sport 30 TFSI

2024
9,511 miles
Trim level: Sport
1.0L Petrol
Sedan
Manual
110 HP (80 kW)
CO2 emissions: 125 g CO2/km comb.
5.5 mpg
Details

Good price

£17,980

£18,750

WV2 1BL West Midlands, West Midlands

Availability verified

1 / 4

Used (2024) Audi A3 S-Line 110 HP | Good price

Saloon 2024 S Line 30 TFSI S Line

2024
21,984 miles
Trim level: S-Line
1.0L Petrol
Sedan
Manual
110 HP (80 kW)
CO2 emissions: 128 g CO2/km comb.
5.7 mpg
Details

Good price

£17,290

EN88DY

Availability verified

-3%

1 / 4

Used (2018) Audi A3 S-Line 150 HP | Good price

1.5 TFSI CoD S line Euro 6 (s/s)

2018
44,725 miles
Trim level: S-Line
1.5L Petrol
Sedan
Manual
150 HP (110 kW)
CO2 emissions: 117 g CO2/km comb.
5.1 mpg
Details

Good price

£12,989

£13,444

LL11 4YL Gwersyllt, Clwyd

Availability verified

-27%

1 / 4

Used (2023) Audi A3 Sport 150 HP | Good price

Saloon 2023 Sport 35 TFSI S

2023
22,389 miles
Trim level: Sport
1.5L Petrol
Sedan
Automatic
150 HP (110 kW)
CO2 emissions: 124 g CO2/km comb.
5.5 mpg
Details

Good price

£19,197

£26,397

NE29 7TE Tyne And Wear, Tyne And Wear

Availability verified

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Used Audi A3 Sport 150 HP (110 kW) 2022 Blue Sedan

(2022) Audi A3 Sport 150 HP

Good price

You save £1,190

WA2 8JH Warrington, Cheshire

128 g CO2/km comb. - 150 HP (110 kW) - 5.6 Mpg

Carwow

Used Audi A3 S-Line 150 HP (110 kW) 2021 White Sedan

(2021) Audi A3 S-Line 150 HP

Fair price

Estimated price £17,749

KT3 4HL Greater London, London

131 g CO2/km comb. - 150 HP (110 kW) - 5.8 Mpg

Carwow

Used Audi A3 S-Line 110 HP (80 kW) 2023 Blue Sedan

(2023) Audi A3 S-Line 110 HP

Fair price

Estimated price £17,837

ME5 9QG Kent, Kent

120 g CO2/km comb. - 110 HP (80 kW) - 5.3 Mpg

Carwow

Used Audi A3 S-Line 110 HP (80 kW) 2022 White Sedan

(2022) Audi A3 S-Line 110 HP

Good price

You save £1,251

LE12 7AT Mountsorrel, Leicestershire

128 g CO2/km comb. - 110 HP (80 kW) - 5.3 Mpg

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Audi A3 (1000+)