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Audi A6 Valuation: 111 used car listings analysed

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Used Audi A6 S-Line 299 HP (219 kW) 2026 Sedan

(2026) Audi A6 S-Line 299 HP

£35,900

Fair price

You save £600

PE296WP Huntingdon, Cambridgeshire

44 g CO2/km comb. - 299 HP (219 kW) - 1.9 Mpg

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Used Audi A6 S-Line 299 HP (219 kW) 2024 Black Estate

(2024) Audi A6 S-Line 299 HP

£26,323

Super price

You save £4,677

SO31 7FL Lower Swanwick, Hampshire

33 g CO2/km comb. - 299 HP (219 kW) - 1.5 Mpg

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Used Audi A6 Black Edition 299 HP (219 kW) 2023 Grey Estate

(2023) Audi A6 Black Edition 299 HP

£26,350

Fair price

Estimated price £26,105

WD3 3RT Croxley Green, Hertfordshire

34 g CO2/km comb. - 299 HP (219 kW) - 1.5 Mpg

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(2023) Audi A6 Black Edition 299 HP

£25,600

Fair price

Estimated price £25,401

CM1 3BH Essex, Essex

30 g CO2/km comb. - 299 HP (219 kW) - 1.3 Mpg

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Used (2025) Audi A6 S-Line | Expensive

Avant 2.0 e-hybrid5.9kWh S line S

2025
8,500 miles
Trim level: S-Line
2.0L Electric/Petrol
Estate
Automatic
Details

Expensive

£40,990

Dealer

London, London

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-2%

1 / 4

Used (2026) Audi A6 S-Line 299 HP | Expensive

Avant 2.0 e-hybrid 25.9kWh S line

Jul 2026
2,988 miles
Trim level: S-Line
2.0L Electric/Petrol
Estate
Automatic
299 HP (219 kW)
CO2 emissions: 54 g CO2/km comb.
2.2 mpg
Details

Expensive

£43,795

£44,995

Dealer

London, London

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-18%

1 / 1

Used (2026) Audi A6 S-Line 299 HP | Expensive

Saloon 2.0 e-hybrid 25.9kWh

Mar 2026
5,050 miles
Trim level: S-Line
2.0L Electric/Petrol
Sedan
Automatic
299 HP (219 kW)
CO2 emissions: 56 g CO2/km comb.
2.2 mpg
Details

Expensive

£43,495

£53,195

Dealer

WC1E 7DP Greater London, London

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1 / 1

Used (2023) Audi A6 Black Edition | Expensive

50 TFSI e 17.9kWh Quattro Black

2023
28,000 miles
Trim level: Black Edition
2.0L Electric/Petrol
Sedan
Manual
Details

Expensive

£31,995

Dealer

London, London

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Used Audi A6 Sport 299 HP (219 kW) 2023 Black Sedan

(2023) Audi A6 Sport 299 HP

£23,916

Super price

You save £4,284

BD2 1DS West Yorkshire, West Yorkshire

27 g CO2/km comb. - 299 HP (219 kW) - 1.2 Mpg

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Used Audi A6 S-Line 299 HP (219 kW) 2022 Black Estate

(2022) Audi A6 S-Line 299 HP

£18,230

Super price

You save £3,470

ME5 9QG Kent, Kent

33 g CO2/km comb. - 299 HP (219 kW) - 1.4 Mpg

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Used Mercedes C200 AMG line 204 HP (150 kW) 2025 Black Sedan

(2025) Mercedes C200 AMG line 204 HP

£30,250

Fair price

Estimated price £30,151

TA1 2EJ Somerset, Somerset

140 g CO2/km comb. - 204 HP (150 kW) - 6.1 Mpg

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Used Mercedes C200 AMG line 204 HP (150 kW) 2026 Black Sedan

(2026) Mercedes C200 AMG line 204 HP

£30,990

Fair price

Estimated price £30,672

RM20 3WJ Thurrock, Essex

140 g CO2/km comb. - 204 HP (150 kW) - 6.1 Mpg

-12%

1 / 1

Used (2026) Audi A6 S-Line 299 HP | Expensive

Saloon 2.0 e-hybrid 25.9kWh

May 2026
6,526 miles
Trim level: S-Line
2.0L Electric/Petrol
Sedan
Automatic
299 HP (219 kW)
CO2 emissions: 56 g CO2/km comb.
2.2 mpg
Details

Expensive

£44,750

£50,950

Dealer

WC1E 7DP Greater London, London

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-17%

1 / 4

Used (2026) Audi A6 S-Line 299 HP | Expensive

Saloon 2.0 e-hybrid 25.9kWh

Mar 2026
3,585 miles
Trim level: S-Line
2.0L Electric/Petrol
Sedan
Automatic
299 HP (219 kW)
CO2 emissions: 56 g CO2/km comb.
2.2 mpg
Details

Expensive

£42,322

£51,550

Dealer

WC1E 7DP Greater London, London

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-9%

1 / 4

Used (2021) Audi A6 Black Edition 299 HP | Expensive

50 TFSI e 17.9kWh Quattro Black

2021
32,299 miles
Trim level: Black Edition
2.0L Electric/Petrol
Sedan
Automatic
299 HP (219 kW)
CO2 emissions: 31 g CO2/km comb.
1.4 mpg
Details

Expensive

£27,498

£30,498

Dealer

WA5 7TT Westbrook, Cheshire

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1 / 1

Used (2021) Audi A6 S-Line 294 HP | Expensive

Saloon 50 TFSI e 17.9kWh Quattro S

2021
54,000 miles
Trim level: S-Line
2.0L Electric/Petrol
Sedan
Automatic
294 HP (216 kW)
CO2 emissions: 28 g CO2/km comb.
1.4 mpg
Details

Expensive

£23,595

Dealer

BT45 7UL Moneymore

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-1%

1 / 4

Used (2026) Audi A6 299 HP

Avant 2026 Edition 1 2.0 e-Hybrid

2026
3,468 miles
2.0L Electric/Petrol
Estate
Automatic
299 HP (219 kW)
CO2 emissions: 58 g CO2/km comb.
2.6 mpg
Details

£52,481

£53,500

Not evaluated

OL1 2RL Greater Manchester, Manchester

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1 / 1

New (2026) Audi A6 S-Line 299 HP

- 2.0 e-Hybrid Quattro 299 S line

2026
0 miles
Trim level: S-Line
2.0L Electric/Petrol
Sedan
Automatic
299 HP (219 kW)
CO2 emissions: 44 g CO2/km comb.
1.9 mpg
Details

£55,000

Not evaluated

DE248AJ

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Availability verified

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(2025) Mercedes C200 AMG line 204 HP

£27,499

Good price

You save £1,501

KA8 0LL South Ayrshire, Ayrshire And Arran

140 g CO2/km comb. - 204 HP (150 kW) - 6.4 Mpg

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Used Mercedes C200 AMG line 204 HP (150 kW) 2025 Silver Sedan

(2025) Mercedes C200 AMG line 204 HP

£26,490

Good price

You save £2,410

HD2 1UA West Yorkshire, West Yorkshire

140 g CO2/km comb. - 204 HP (150 kW) - 6.1 Mpg

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Used Mercedes C200 AMG line 204 HP (150 kW) 2025 Blue Sedan

(2025) Mercedes C200 AMG line 204 HP

£28,292

Fair price

You save £708

LS12 6BZ West Yorkshire, West Yorkshire

140 g CO2/km comb. - 204 HP (150 kW) - 6.1 Mpg

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(2025) Mercedes C200 AMG line 204 HP

£27,990

Good price

You save £1,910

HD2 1UA West Yorkshire, West Yorkshire

140 g CO2/km comb. - 204 HP (150 kW) - 6.1 Mpg

1 / 1

New (2026) Audi A6 S-Line 299 HP

- Avant 2.0 e-Hybrid Quattro 299 S

2026
0 miles
Trim level: S-Line
2.0L Electric/Petrol
Estate
Automatic
299 HP (219 kW)
CO2 emissions: 46 g CO2/km comb.
2 mpg
Details

£61,904

Not evaluated

RH14 9AZ Five Oaks, West Sussex

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Availability verified

-7%

1 / 1

New (2026) Audi A6 299 HP

- Avant 2.0 e-Hybrid Quattro 299

2026
0 miles
2.0L Electric/Petrol
Estate
Automatic
299 HP (219 kW)
CO2 emissions: 58 g CO2/km comb.
2.6 mpg
Details

£66,685

£71,785

Not evaluated

BA228RT

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Availability verified

1 / 4

New (2026) Audi A6 299 HP

- 2.0 e-Hybrid Quattro 299 Edition

2026
0 miles
2.0L Electric/Petrol
Sedan
Automatic
299 HP (219 kW)
CO2 emissions: 56 g CO2/km comb.
2.5 mpg
Details

£57,000

Not evaluated

DE248AJ

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Availability verified

-1%

1 / 1

New (2026) Audi A6 299 HP

- 2.0 e-Hybrid Quattro 299 Edition

2026
0 miles
2.0L Electric/Petrol
Sedan
Automatic
299 HP (219 kW)
CO2 emissions: 56 g CO2/km comb.
2.5 mpg
Details

£63,060

£63,730

Not evaluated

WV2 1BL West Midlands, West Midlands

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Availability verified

1 / 1

New (2026) Audi A6 S-Line 299 HP

- 2.0 e-Hybrid Quattro 299 S line

2026
0 miles
Trim level: S-Line
2.0L Electric/Petrol
Sedan
Automatic
299 HP (219 kW)
CO2 emissions: 44 g CO2/km comb.
1.9 mpg
Details

£57,901

Not evaluated

SY1 3GA Shropshire, Shropshire

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Availability verified

1 / 1

New (2026) Audi A6 Sport 299 HP

- 2.0 e-Hybrid Quattro 299 Sport

2026
0 miles
Trim level: Sport
2.0L Electric/Petrol
Sedan
Automatic
299 HP (219 kW)
CO2 emissions: 45 g CO2/km comb.
2 mpg
Details

£57,173

Not evaluated

WV2 1BL West Midlands, West Midlands

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Availability verified

-1%

1 / 1

New (2026) Audi A6 299 HP

- Avant 2.0 e-Hybrid Quattro 299

2026
0 miles
2.0L Electric/Petrol
Estate
Automatic
299 HP (219 kW)
CO2 emissions: 58 g CO2/km comb.
2.6 mpg
Details

£64,610

£65,299

Not evaluated

SG5 1RQ Hertfordshire, Hertfordshire

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Availability verified

-3%

1 / 4

Used (2026) Audi A6 Advanced 299 HP

Avant Edition 1 e-hybrid quattro

2026
2,344 miles
Trim level: Advanced
2.0L Electric/Petrol
Estate
Automatic
299 HP (219 kW)
CO2 emissions: 58 g CO2/km comb.
2.2 mpg
Details

£53,980

£55,980

Not evaluated

ST16 1GZ Staffordshire, Staffordshire

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Availability verified

New

Used (2021) Audi A6 Black Edition

Saloon 2.0 TFSIe 50 Black Edition

2021
32,479 miles
Trim level: Black Edition
2.0L Electric/Petrol
Sedan
Automatic
Details

£25,600

Not evaluated

Dealer

London, London

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1 / 1

Used (2021) Audi A6 Black Edition

50 TFSI e Quattro Vorsprung 4dr S

2021
20,000 miles
Trim level: Black Edition
2.0L Electric/Petrol
Sedan
Automatic
Details

£34,995

Not evaluated

Dealer

London, London

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Used Mercedes C200 AMG line 204 HP (150 kW) 2025 Grey Sedan

(2025) Mercedes C200 AMG line 204 HP

£27,211

Good price

You save £1,589

G46 6AA Giffnock, Renfrewshire

140 g CO2/km comb. - 204 HP (150 kW) - 6.1 Mpg

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(2025) Mercedes C200 AMG line 204 HP

£28,697

Fair price

You save £703

NE29 7TE Tyne And Wear, Tyne And Wear

140 g CO2/km comb. - 204 HP (150 kW) - 6.1 Mpg

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Used Mercedes C200 AMG line 224 HP (164 kW) 2025 Blue Sedan

(2025) Mercedes C200 AMG line 224 HP

£26,895

Good price

You save £1,905

LE10 3DJ Leicestershire, Leicestershire

140 g CO2/km comb. - 224 HP (164 kW) - 6.1 Mpg

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Used Mercedes C200 AMG line 224 HP (164 kW) 2025 Black Sedan

(2025) Mercedes C200 AMG line 224 HP

£26,760

Good price

You save £2,440

BB1 3NU Lancashire, Lancashire

140 g CO2/km comb. - 224 HP (164 kW) - 6.1 Mpg

1 / 1

Used (2012) Audi A6 | Rare vehicle

Saloon 2.0cc ULEZ FREE,SUNROOF,

2012
55,000 miles
2.0L Electric/Petrol
Sedan
Automatic
Details

£8,495

Rare vehicle

Dealer

London, London

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1 / 1

Used (2025) Audi A6 Sport

2.0 e-Hybrid Qtro 299 Edition 1

2025
5,807 miles
Trim level: Sport
2.0L Electric/Petrol
Sedan
Automatic
Details

£46,998

Not evaluated

Dealer

London, London

View the car

-1%

1 / 4

Used (2026) Audi A6 S-Line 299 HP

Avant 2.0 e-hybrid 25.9kWh Edition

Jul 2026
2,732 miles
Trim level: S-Line
2.0L Electric/Petrol
Estate
Automatic
299 HP (219 kW)
CO2 emissions: 58 g CO2/km comb.
Details

£55,995

£56,995

Not evaluated

Dealer

London, London

View the car

1 / 4

Used (2026) Audi A6 S-Line 299 HP

A6 AVANT 2.0 e-Hybrid Quattro 299

2026
1,958 miles
Trim level: S-Line
2.0L Electric/Petrol
Estate
Automatic
299 HP (219 kW)
CO2 emissions: 51 g CO2/km comb.
2.2 mpg
Details

£47,244

£47,544

Not evaluated

Dealer

EX2 8HL Marsh Barton, Devon

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1 / 1

New (2026) Audi A6 S-Line 299 HP

Avant 2.0 e-hybrid 25.9kWh Edition

Sep 2026
857 miles
Trim level: S-Line
2.0L Electric/Petrol
Estate
Automatic
299 HP (219 kW)
CO2 emissions: 58 g CO2/km comb.
Details

£56,450

Not evaluated

Dealer

London, London

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(2025) Mercedes C200 AMG line 204 HP

£27,990

Fair price

You save £1,110

WF2 7UA West Yorkshire, West Yorkshire

140 g CO2/km comb. - 204 HP (150 kW) - 6.1 Mpg

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Used Mercedes C200 AMG line 204 HP (150 kW) 2024 Grey Sedan

(2024) Mercedes C200 AMG line 204 HP

£26,090

Fair price

You save £1,010

RM20 3WJ Thurrock, Essex

140 g CO2/km comb. - 204 HP (150 kW) - 6.1 Mpg

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(2025) Mercedes C200 AMG line 204 HP

£28,990

Fair price

You save £710

CM5 0ER Magdalen Laver, Essex

140 g CO2/km comb. - 204 HP (150 kW) - 6.1 Mpg

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(2025) Mercedes C200 AMG line 204 HP

£26,778

Good price

You save £2,322

ML3 7JP South Lanarkshire, Lanarkshire

140 g CO2/km comb. - 204 HP (150 kW) - 6.1 Mpg

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