(S-Line) Audi A6 used • 131 cars with price check

Market overview: Prices range from £18,491 to £64,000 across all listings

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Carwow

Black Used 2021 Audi A6 S-Line Sedan | £22,205 (Fair price)

Audi A6 40 TFSI S Line 4dr S Tronic Petrol Saloon

Fair price

Estimated price £20,995

LE27JU, Leicestershire

169 g CO2/km comb. - 204 HP (150 kW) - 39.0 Mpg

Carwow

Blue Used 2020 Audi A6 S-Line Sedan | £21,495 (Good price)

Audi A6 2.0 TDI 40 S line S Tronic Euro 6 (s/s) 4dr REVERSE CAMERA APPLE CRAPLAY Saloon

Good price

You save £1,705

LE103DJ Hinckley, Leicestershire

142 g CO2/km comb. - 204 HP (150 kW) - 5.4 Mpg

Carwow

Black Used 2022 Audi A6 Sport Estate | £17,995 (Super price)

Audi A6 2.0 TFSI 40 Sport S Tronic Euro 6 (s/s) 5dr REVERSE CAMERA HEATED SEATS Estate

Super price

You save £2,705

LE103DJ Hinckley, Leicestershire

167 g CO2/km comb. - 204 HP (150 kW) - 7.3 Mpg

Carwow

Black Used 2021 Audi A6 S-Line Sedan | £21,500 (Fair price)

Audi A6 -40 TDI S Line 4dr Tronic

Fair price

Estimated price £20,330

LE169PL, Leicestershire

142 g CO2/km comb. - 204 HP (150 kW) - 5.4 Mpg

Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

Used (2021) Audi A6 S-Line 204 HP | Fair price

40 TFSI S Line 4dr S Tronic Petrol

204 HP (150 kW)

169 g CO2/km comb.

LE27JU, Leicestershire

Fair price

Estimated price £20,995

LE27JU, Leicestershire

Used (2013) Audi A6 S-Line | Fair price

Saloon (2013/13)2.0 TDI S Line

Leicester, Leicestershire

Fair price

Leicester, Leicestershire

Visit Parkers.co.uk

Used (2011) Audi A6 S-Line 170 HP | A bit pricey

2.0 TDI 170 S Line Special Ed

170 HP (125 kW)

LE19 4ND Leicester, Leicestershire

A bit pricey

Estimated price £2,524

LE19 4ND Leicester, Leicestershire

Visit Motors.co.uk

Used (2011) Audi A6 S-Line | A bit pricey

2.0 TDI S line

LE3 5GH Leicester, Leicestershire

A bit pricey

Estimated price £3,574

LE3 5GH Leicester, Leicestershire

Visit Motors.co.uk

A trusted partner of AutoUncle with agreed terms and a signed contract, ensuring you're dealing with a legitimate business.

New (2025) Audi A6 S-Line 299 HP | Not evaluated

-2.0 e-Hybrid Quattro 299 S line

299 HP (219 kW)

49 g CO2/km comb.

LE32LD Leicester, Leicestershire

LE32LD Leicester, Leicestershire

Used (2020) Audi A6 S-Line 204 HP | Good price

Avant 40 TDI S Line 5dr S

204 HP (150 kW)

WC1E 7DP London, London

Good price

You save £2,178

WC1E 7DP London, London

Visit Motors.co.uk

Used (2025) Audi A6 S-Line 201 HP | Good price

40 TFSI S Line 4dr S Tronic

201 HP (147 kW)

WC1E 7DP London, London

Good price

You save £1,600

WC1E 7DP London, London

Visit Carsite.co.uk

Used (2021) Audi A6 S-Line 204 HP | Super price

Avant S line 40 TDI 204 PS S

204 HP (150 kW)

119 g CO2/km comb.

WC1E 7DP London, London

Super price

You save £4,529

WC1E 7DP London, London

Visit Honestjohn

Used (2023) Audi A6 S-Line 204 HP | Good price

40 TFSI S Line 4dr S Tronic [Tech

204 HP (150 kW)

162 g CO2/km comb.

NR337NA Lowestoft, Suffolk

Good price

You save £1,410

NR337NA Lowestoft, Suffolk

Visit Honestjohn

Used (2021) Audi A6 S-Line 204 HP | Good price

40 TDI S Line 4dr S Tronic

204 HP (150 kW)

WC1E 7DP London, London

Good price

You save £2,028

WC1E 7DP London, London

Visit Motors.co.uk

Featured deals

Carwow

Black Used 2022 Audi A6 S-Line Sedan | £20,795 (Good price)

Audi A6 2.0 TFSI 40 S line S Tronic Euro 6 (s/s) 4dr REVERSE CAMERA HEATED SEATS Saloon

Good price

You save £1,705

LE103DJ Hinckley, Leicestershire

162 g CO2/km comb. - 204 HP (150 kW) - 7.1 Mpg

Carwow

Used 2023 Mercedes C200 AMG Line Premium Estate | £25,995 (Good price)

Mercedes C200 -AMG Line Premium 5dr 9G-Tronic

Good price

You save £2,105

LE103DJ Hinckley, Leicestershire

155 g CO2/km comb. - 204 HP (150 kW) - 6.9 Mpg

Carwow

Used 2025 Mercedes CLA200 AMG Line Premium Plus Sedan | £27,490 (Fair price)

Mercedes CLA200 -AMG Line Premium Plus 4dr Tip Auto

Fair price

LE49LF, Leicestershire

141 g CO2/km comb. - 163 HP (119 kW) - 6.1 Mpg

Carwow

Blue Used 2024 BMW 218 M Sport Coupe | £23,850 (Fair price)

BMW 218 - 2 Series Gran Coupe i [136] M Sport 4dr DCT

Fair price

Estimated price £22,868

LE27SL Leicester, Leicestershire

133 g CO2/km comb. - 136 HP (100 kW) - 5.8 Mpg

Used (2023) Audi A6 S-Line 204 HP | Super price

40 TDI Quattro S Line 4dr S Tronic

204 HP (150 kW)

Super price

You save £3,111

Visit Carsite.co.uk

Used (2019) Audi A6 S-Line 204 HP | Good price

AVANT S Line

204 HP (150 kW)

MK41 0SF Bedford, Bedfordshire

Good price

You save £1,470

MK41 0SF Bedford, Bedfordshire

Visit Motors.co.uk

Used (2023) Audi A6 S-Line 204 HP | Good price

40 TFSI S Line 4dr S Tronic [Tech

204 HP (150 kW)

WC1E 7DP London, London

Good price

You save £1,810

WC1E 7DP London, London

Visit Motors.co.uk

Used (2019) Audi A6 S-Line 204 HP | Good price

Saloon S line 40 TDI 204 PS S

204 HP (150 kW)

146 g CO2/km comb.

WC1E 7DP London, London

Good price

You save £1,350

WC1E 7DP London, London

Visit Carsite.co.uk

Used (2021) Audi A6 S-Line 201 HP | Super price

Avant 40 TDI S Line 5dr S

201 HP (147 kW)

WC1E 7DP London, London

Super price

You save £3,110

WC1E 7DP London, London

Visit Carsite.co.uk

New (2025) Audi A6 S-Line 201 HP | Super price

Avant 2.0 TFSI 204 S line 5dr S

201 HP (147 kW)

WC1E 7DP London, London

Super price

You save £6,650

WC1E 7DP London, London

New (2025) Audi A6 S-Line 201 HP | Super price

2.0 TDI Quattro 204 Launch Edition

201 HP (147 kW)

WC1E 7DP London, London

Super price

You save £5,500

WC1E 7DP London, London

New (2025) Audi A6 S-Line 295 HP | Super price

2.0 e-Hybrid Qtro 299 Launch

295 HP (216 kW)

Delivered to you

Super price

You save £6,019

Delivered to you

New (2026) Audi A6 S-Line 200 HP | Good price

Avant 2.0 TDI Quattro 204 S line

200 HP (147 kW)

Delivered to you

Good price

You save £2,595

Delivered to you

Used (2018) Audi A6 S-Line 204 HP | Fair price

40 TDI S Line 4dr S Tronic

204 HP (150 kW)

Delivered to you

Fair price

You save £1,200

Delivered to you

Featured deals

Carwow

White Used 2021 BMW 320 M Sport Sedan | £22,195 (Good price)

BMW 320 3 Series 2.0 i M Sport Auto Euro 6 (s/s) 4dr REVERSE CAMERA HEATED SEATS Saloon

Good price

You save £2,405

LE103DJ Hinckley, Leicestershire

146 g CO2/km comb. - 184 HP (135 kW) - 6.4 Mpg

Carwow

Used 2022 Mercedes CLA200 AMG Line Premium Sedan | £21,850 (Good price)

Mercedes CLA200 -AMG Line Premium 4dr Tip Auto

Good price

You save £1,350

LE27SL Leicester, Leicestershire

139 g CO2/km comb. - 163 HP (119 kW) - 6.1 Mpg

Carwow

Blue Used 2019 Mercedes E220 AMG line Cabriolet | £17,495 (Good price)

Mercedes E220 4Matic AMG Line 2dr 9G-Tronic

Good price

You save £2,205

LE103DJ Hinckley, Leicestershire

173 g CO2/km comb. - 194 HP (142 kW) - 6.1 Mpg

Carwow

Grey Used 2021 BMW 320 M Sport Sedan | £14,795 (Fair price)

BMW 320 3 Series i xDrive M Sport 4dr Step Auto

Fair price

LE103DJ Hinckley, Leicestershire

154 g CO2/km comb. - 184 HP (135 kW) - 6.8 Mpg

Used (2022) Audi A6 S-Line 201 HP | Fair price

Avant 40 TFSI S Line 5dr S Tronic

201 HP (147 kW)

YO304WW York, North Yorkshire

Fair price

Estimated price £27,802

YO304WW York, North Yorkshire

Visit Honestjohn

Used (2024) Audi A6 S-Line 201 HP | Fair price

40 TFSI S Line 4dr S Tronic

201 HP (147 kW)

NN55DH Northampton, Northamptonshire

Fair price

Estimated price £31,485

NN55DH Northampton, Northamptonshire

Visit Carsite.co.uk

Used (2023) Audi A6 S-Line 204 HP | Fair price

Avant 40 TFSI S Line 5dr S Tronic

204 HP (150 kW)

169 g CO2/km comb.

Delivered to you

Fair price

Estimated price £30,142

Delivered to you

Used (2022) Audi A6 S-Line 204 HP | Fair price

2.0 TFSI 40 S line S Tronic Euro 6

204 HP (150 kW)

162 g CO2/km comb.

WF4 3BB Wakefield, West Yorkshire

Fair price

You save £1,110

WF4 3BB Wakefield, West Yorkshire

Used (2019) Audi A6 S-Line 204 HP | Fair price

40 TDI S Line 4dr S Tronic Diesel

204 HP (150 kW)

118 g CO2/km comb.

HP91QJ Beaconsfield, Buckinghamshire

Fair price

You save £1,009

HP91QJ Beaconsfield, Buckinghamshire

Visit Honestjohn

Featured deals

Carwow

White Used 2021 BMW 320 M Sport Sedan | £19,190 (Fair price)

BMW 320 3 Series i xDrive M Sport 4dr Step Auto

Fair price

LE127AT Sorrell, Leicestershire

154 g CO2/km comb. - 184 HP (135 kW) - 6.8 Mpg

Carwow

Grey Used 2020 Audi A4 Sport Sedan | £16,995 (Good price)

Audi A4 2.0 TFSI 35 Sport S Tronic Euro 6 (s/s) 4dr REVERSING CAMERA HEATED SEATS Saloon

Good price

You save £2,205

LE103DJ Hinckley, Leicestershire

143 g CO2/km comb. - 150 HP (110 kW) - 6.3 Mpg

Carwow

Grey Used 2020 BMW 320 Sport Line Sedan | £12,995 (Good price)

BMW 320 - 3 Series i Sport 4dr Step Auto

Good price

You save £2,105

LE103DJ Hinckley, Leicestershire

146 g CO2/km comb. - 184 HP (135 kW) - 6.4 Mpg

Carwow

Used 2023 BMW 218 Sport Line Coupe | £17,495 (Super price)

BMW 218 - 2 Series Gran Coupe i [136] Sport 4dr DCT [Live Cockpit Prof]

Super price

You save £3,405

LE103DJ Hinckley, Leicestershire

130 g CO2/km comb. - 136 HP (100 kW) - 5.7 Mpg

Showing 1 - 25 of 131 results

Price checked by AutoUncle

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Expensive

Other trim level for Audi A6