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Audi A6 (S-Line) • 712 cars with analysis

Average sales data

Avg. price

£24,825

Cars found

714

Depreciation

-

Avg. sale time

-

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Price checked by AutoUncle

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Carwow

Used Audi A6 S-Line 204 HP (150 kW) 2021 Black Sedan
S-Line
(2021) Audi A6 S-Line 204 HP
£22,899

Fair price

Estimated price £22,174
CW7 Cheshire West And Chester, Cheshire

163 g CO2/km comb. - 204 HP (150 kW) - 39.2 Mpg

Carwow

Used Audi A6 S-Line 204 HP (150 kW) 2022 Grey Sedan
S-Line
(2022) Audi A6 S-Line 204 HP
£23,399

Fair price

You save £701
OL11 2NQ Greater Manchester, Manchester

162 g CO2/km comb. - 204 HP (150 kW) - 37.7 Mpg

Carwow

Used Audi A6 S-Line 204 HP (150 kW) 2021 Black Sedan
S-Line
(2021) Audi A6 S-Line 204 HP
£19,770

Fair price

You save £1,030
S60 5BD Catcliffe, South Yorkshire

163 g CO2/km comb. - 204 HP (150 kW) - 7.2 Mpg

Carwow

Used Audi A6 S-Line 204 HP (150 kW) 2021 Estate
S-Line
(2021) Audi A6 S-Line 204 HP
£16,994

Fair price

You save £106
OL84PQ

149 g CO2/km comb. - 204 HP (150 kW) - 5.7 Mpg

autouncle-certified

Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive

Featured deals

Verified Dealers

Carwow

Used Audi A6 S-Line 204 HP (150 kW) 2023 Grey Sedan
S-Line
(2023) Audi A6 S-Line 204 HP
£21,800

Fair price

Estimated price £21,496
WD3 3RT Croxley Green, Hertfordshire

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

Carwow

Used Audi A6 S-Line 340 HP (250 kW) 2021 Sedan
S-Line
(2021) Audi A6 S-Line 340 HP
£19,599

Super price

You save £2,801
M417TB Urmston, Manchester

186 g CO2/km comb. - 340 HP (250 kW) - 8.2 Mpg

Carwow

Used Audi A6 S-Line 204 HP (150 kW) 2021 Sedan
S-Line
(2021) Audi A6 S-Line 204 HP
£17,599

Good price

You save £1,201
CW7 Cheshire West And Chester, Cheshire

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

Carwow

Used Audi A6 S-Line 204 HP (150 kW) 2021 Sedan
S-Line
(2021) Audi A6 S-Line 204 HP
£19,995

Fair price

You save £105
CO57JH

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

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Verified Dealers

Carwow

Used Audi A6 S-Line 204 HP (150 kW) 2021 Sedan
S-Line
(2021) Audi A6 S-Line 204 HP
£17,799

Fair price

You save £1,101
CW7 Cheshire West And Chester, Cheshire

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

Carwow

Used Audi A6 S-Line 204 HP (150 kW) 2021 Estate
S-Line
(2021) Audi A6 S-Line 204 HP
£16,920

Fair price

You save £380
E65LU

149 g CO2/km comb. - 204 HP (150 kW) - 5.7 Mpg

Carwow

Used Audi A6 S-Line 286 HP (210 kW) 2021 Sedan
S-Line
(2021) Audi A6 S-Line 286 HP
£16,674

Super price

You save £3,126
E65LU

179 g CO2/km comb. - 286 HP (210 kW) - 6.8 Mpg

Carwow

Used Audi A6 S-Line 204 HP (150 kW) 2020 Blue Sedan
S-Line
(2020) Audi A6 S-Line 204 HP
£17,650

Fair price

Estimated price £17,418
WD3 3RT Croxley Green, Hertfordshire

147 g CO2/km comb. - 204 HP (150 kW) - 5.6 Mpg

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Verified Dealers

Carwow

Used Audi A6 S-Line 204 HP (150 kW) 2023 Sedan
S-Line
(2023) Audi A6 S-Line 204 HP
£20,803

Fair price

You save £97
DL11XP

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

Carwow

Used Audi A6 S-Line 204 HP (150 kW) 2021 Sedan
S-Line
(2021) Audi A6 S-Line 204 HP
£17,249

Super price

You save £2,951
NP194SS

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

Carwow

Used Audi A6 S-Line 299 HP (219 kW) 2023 Grey Sedan
S-Line
(2023) Audi A6 S-Line 299 HP
£23,750

Fair price

Estimated price £22,872
OL11 2NQ Greater Manchester, Manchester

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

Carwow

Used Audi A6 S-Line 299 HP (219 kW) 2023 Black Sedan
S-Line
(2023) Audi A6 S-Line 299 HP
£21,500

Fair price

Estimated price £21,331
RM20 3NL Purfleet-On-Thames, Essex

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

Featured deals

Verified Dealers

Carwow

Used Audi A6 S-Line 204 HP (150 kW) 2021 Sedan
S-Line
(2021) Audi A6 S-Line 204 HP
£19,099

Fair price

You save £1,101
CW7 Cheshire West And Chester, Cheshire

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

Carwow

Used Audi A6 S-Line 204 HP (150 kW) 2021 Estate
S-Line
(2021) Audi A6 S-Line 204 HP
£16,495

Fair price

Estimated price £16,418
DE737HL

149 g CO2/km comb. - 204 HP (150 kW) - 5.7 Mpg

Carwow

Used Audi A6 S-Line 204 HP (150 kW) 2021 Grey Estate
S-Line
(2021) Audi A6 S-Line 204 HP
£22,850

Fair price

You save £1,150
N11 1GN Greater London, London

152 g CO2/km comb. - 204 HP (150 kW) - 5.8 Mpg

Carwow

Used Audi A6 S-Line 204 HP (150 kW) 2021 Estate
S-Line
(2021) Audi A6 S-Line 204 HP
£19,300

Good price

You save £1,700
CM9 4LL Heybridge, Essex

149 g CO2/km comb. - 204 HP (150 kW) - 5.7 Mpg

Showing 1 - 25 of 714 results

How much does a used Audi A6 cost? Prices, ratings and depreciation by model year

How much does a used Audi A6 cost? Prices, ratings and depreciation by model year

Model year

Price range*

Avg. Price

Median Mileage

Depreciation
(12 mth.)

Cars for sale

2026 Audi A6

£37,450 - £60,355£46,4991,700 miles-£14,420213

2025 Audi A6

£36,644 - £53,595£42,2955,300 miles-£7,840109

2024 Audi A6

£24,285 - £41,115£31,30518,200 miles-£10,38046

2023 Audi A6

£18,455 - £33,496£26,42234,000 miles-£5,060134

2022 Audi A6

£17,206 - £29,923£23,10542,200 miles-£3,700104

2021 Audi A6

£16,334 - £26,676£20,95750,500 miles-£3,700144

2020 Audi A6

£15,550 - £23,850£19,48067,600 miles-£4,00061

2019 Audi A6

£13,995 - £24,666£18,90468,500 miles-£1,580153

2018 Audi A6

£9,910 - £19,995£15,13980,300 miles-£1,120137

2017 Audi A6

£8,324 - £16,909£12,68090,100 miles-£52087

2016 Audi A6

£7,819 - £18,242£11,73395,500 miles-£280121

2015 Audi A6

£6,533 - £14,998£10,73195,300 miles-£58091

2009 Audi A6

£2,935 - £19,062£8,86880,000 miles-< 10

2014 Audi A6

£4,498 - £14,176£8,247110,000 miles-£70077

2013 Audi A6

£4,075 - £10,900£6,908106,600 miles-£98045

2012 Audi A6

£3,555 - £10,976£6,493106,400 miles-£76035

2008 Audi A6

£1,925 - £9,373£5,711128,000 miles-< 10

2011 Audi A6

£2,488 - £9,982£5,516120,400 miles-£4018

2006 Audi A6

£2,000 - £8,620£5,204127,000 miles-£72011

2007 Audi A6

£1,693 - £5,925£4,323140,000 miles-£52014

2010 Audi A6

£1,336 - £9,099£4,246124,500 miles-£56016

*The 'Price range' column shows the prices at the 5th and 95th percentiles of cars in the current market

The data is based on the cars currently listed on AutoUncle

Last updated: 19 July 2026

Comparison of Audi A6 variants and prices

Below you can compare prices and depreciation for the 11 most popular Audi A6 variants. The table is updated daily with data from the market in United Kingdom.

Comparison of Audi A6 variants and prices

Variant

Price range*

Avg. Price

Median Mileage

Depreciation
(12 mth.)

Cars for sale

Audi A6 Sport

£14,232 - £46,916£25,27038,700 miles+£2,420257
🏆 The most popular

Audi A6 S-Line

£5,995 - £48,670£25,22951,600 miles+£4,060712

Audi A6 Advanced

£4,917 - £50,459£19,49185,400 miles-£5,50017

Audi A6 Black Edition

£7,492 - £35,177£19,19572,100 miles-£4,500409
📈 The best value

Audi A6 Comfort

£2,010 - £52,873£18,65382,100 miles+£7,76041

Audi A6 Design

£3,475 - £48,730£15,80792,000 miles+£1,76033

Audi A6 Competition

£9,699 - £22,299£14,83281,600 miles-< 10

Audi A6 Business

£5,792 - £13,478£8,55290,000 miles-£620< 10

Audi A6 Basis

£4,149 - £11,345£8,32874,700 miles-< 10

Audi A6 Performance

£6,395 - £9,650£8,078105,800 miles-< 10
💰 The budget choice

Audi A6 Premium

£2,899 - £6,944£5,328114,000 miles-< 10

*The 'Price range' column shows the prices at the 5th and 95th percentiles of cars in the current market

The data is based on the cars currently listed on AutoUncle

Last updated: 19 July 2026

Which variant should you choose?

💰 The budget choice

The Premium is the cheapest entry point with an average price of £5,328.

Accuracy will improve as more cars from this variant become available

🏆 The most popular

There are the most S-Line for sale right now (712), which gives you the most options to choose from.

📈 The best value

The Comfort has held its price stable with minimal loss in value over the past year (+£7,760).

autouncle-certified

Price checked by AutoUncle

Super price

Good price

Fair price

A bit pricey

Expensive

See Audi A6

Price Information

Audi A6

Price ratingAverage price

Super

£22,555

Good

£19,968

Fair

£18,637

Poor

£20,632

Bad

£23,204

Price valuation FAQs