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Cazoo
Cars for sale
Audi
A6
Under £20000
Page 6

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Used Audi A6 cars for sale under £20000 - Page 6

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72
£10,580£201 (HP)
Audi A6
2016 - 2.0 TDI ultra S line 4-Door
2016
77,016 miles
Diesel
Manual
Joseph David Simm Ltd
bebside blyth
4.7
21
£7,999
Audi A6
2017 (67) - 2.0 TDI Ultra S Line 4dr S Tronic
2017 Bargain of this week Auto white, looks unique
2017
148,000 miles
Diesel
Auto
Budget Cars
birmingham
30
£9,500£178 (HP)
Audi A6
2015 (65) - 2.0 TDI Ultra S Line 4dr S Tronic
EURO 6!
2015
100,000 miles
Diesel
Auto
S AND T MOTOR CO LTD
gateshead
39
£17,495£339 (HP)
Audi A6
2019 (19) - 40 TDI S Line 4dr S Tronic
Matrix headlights, new cambelt
2019
82,000 miles
Diesel
Auto
Car Nation Ltd
wisbech
44
£12,995£252 (HP)
Audi A6
2018 (18) - 2.0 TDI Ultra Black Edition 5dr S Tronic
CAMBELT/WTR PUMP, DSG SERVICE
2018
108,500 miles
Diesel
Auto
Car Nation Ltd
wisbech
80
£10,300
Audi A6
2015 - 3.0 TDI [272] Quattro Black Edition 4dr S Tronic
2015
124,144 miles
Diesel
Auto
Westbrook Car Sales
peterborough
19
£16,995£336 (HP)
Audi A6
2018 (68) - 50 TDI Quattro S Line 4dr Tip Auto
HUGE SPEC,FULL AUDI SH,STUNNING LOOKS,DIGITALDASH
2018
74,000 miles
Diesel
Auto
SM CARS (LANCASTER) LTD
morecambe
3.6
17
£4,199
Audi A6
2012 - 2.0 TDI S line 4-Door
2012
168,000 miles
Diesel
Auto
CARVIEWS LTD
birmingham
14
£8,995£168 (HP)
Audi A6
2012 (12) - 3.0 BiTDI Quattro 313 SE 5dr Tip Auto
2012
94,000 miles
Diesel
Auto
Affordable Motors
birmingham
52
£7,995
Audi A6
2015 - 2.0 TDI Ultra Black Edition 4dr S Tronic
Amazing Spec, best interior!
2015
124,250 miles
Diesel
Auto
Shilton Classics Ltd
swadlincote
29
£6,699£120 (HP)
Audi A6
2013 (63) - 2.0 TDI S Line 4dr
2013
100,150 miles
Diesel
Manual
Boston Car Centre
boston
44
£6,000
Audi A6
2015 - TDI ULTRA SE 4-Door
SERVICE HISTORY,2 KEYS,LONG MOT
2015
140,000 miles
Diesel
Auto
The Car Shop
birmingham
4.6
37
£14,475£283 (HP)
Audi A6
2019 (19) - A6 S Line 40 Tdi Semi-auto 4-Door
2019
105,000 miles
Diesel
Auto
GMC MOTORS B'HAM LIMITED
birmingham,
23
£18,499£323 (PCP)
Audi A6
2018 (68) - 40 TDI S Line 4dr S Tronic
Fantastic Condition Throughout
2018
47,500 miles
Diesel
Auto
Caru Automotive
brierley hill
4.5
47
£5,995
Audi A6
2013 (63) - 2.0 TDI S Line 5dr Multitronic
Full MOT, Service History, perfect engine.
2013
125,101 miles
Diesel
Auto
Trunk Road Budget Cars
middlesbrough
32
£6,495£115 (HP)
Audi A6
2013 (13) - HYBRID TFSI 245 AUTOMATIC 4-Door
2013
71,266 miles
Hybrid
Auto
Smazz Cars
solihull
54
£6,990
Audi A6
2015 (15) - 2.0 TDI Ultra SE 4dr S Tronic
MEW MOT&SERVICE*NAVIGATION
2015
113,122 miles
Diesel
Auto
AQ Motors
romford
31
£16,499£325 (HP)
Audi A6
2020 (70) - 50 TFSI e Quattro Sport 4dr S Tronic
Hybrid Plugin
2020
73,671 miles
Hybrid
Auto
Redstar London Limited
egham
63
£15,495£304 (HP)
Audi A6
2018 (68) - 40 TDI S Line 4dr S Tronic
/ 6 MONTHS WARRANTY PARTS & LABOUR NATIONWIDE /
2018
98,248 miles
Diesel
Auto
RTM MOTORS CARDIFF
cardiff
35
£13,750£273 (HP)
Audi A6
2018 - 2.0 TDI Ultra S Line 5dr S Tronic
2018
88,881 miles
Diesel
Auto
Bridgend Ford
bridgend
4.6
19
£18,498
Audi A6
2019 - 40 TDI S Line 4dr S Tronic
We make car buying easy
2019
62,270 miles
Diesel
Auto
Arnold Clark Motorstore / BYD (Linwood)
linwood
4.7
52
£3,995
Audi A6
2012 (12) - 2.0 TDI SE 4dr
/ 6 MONTHS WARRANTY PARTS & LABOUR NATIONWIDE /
2012
133,634 miles
Diesel
Manual
RTM MOTORS CARDIFF
cardiff
56
£6,695
Audi A6
2016 (16) - 2.0 TDI Ultra SE Executive 4dr
/ 6 MONTHS WARRANTY PARTS & LABOUR NATIONWIDE /
2016
143,769 miles
Diesel
Manual
RTM MOTORS CARDIFF
cardiff
19
£18,698
Audi A6
2019 - 40 TDI S Line 4dr S Tronic
We make car buying easy
2019
63,284 miles
Diesel
Auto
Arnold Clark Linwood Seat / Skoda / Cupra
linwood
4.7

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307 Used Audi A6 cars for sale under £20000 - Page 6 | Cazoo

Audi A6 review

Pros

Incredibly quiet and refined, making it a perfect motorway cruiser
Stunning, high-tech interior that feels genuinely special
Strong and efficient diesel engines are great all-rounders

Cons

Rivals like the BMW 5 Series are more fun to drive
The ride can be a bit firm on sporty S line models
The long options list can make used models vary hugely in spec

Audi A6 summary

4 / 5 review score

Author The Cazoo editorial team

Author: The Cazoo editorial team7th Jan 2026 – 9 min read

Audi A6 review image