(opens in new window)
Sign In
Home
Used Cars
New Cars
Private Seller Cars
Sell My Car
Instant Cash Offer
Research & Tools
Helpful Links
Find Local Dealers
Best Car Deals
Best Truck Deals
Best SUV Deals
Buy Cars Online
Car Research & News
Research & Information
New & Future Models
Trim Comparisons
Car Buying Tools
Buying & Selling Tips
Car Payment Calculator
Affordability Calculator
Car Lease Calculator
See if you can save on car insurance on KBB.com
Get a Kelley Blue Book® Instant Cash Offer
Run a free AutoCheck Vehicle History Report with Experian
AI Mode
Beta
Home
Used Cars
New Cars
Private Seller Cars
Sell My Car
Instant Cash Offer
Research & Tools
AI Mode
Beta
Skip to vehicle Listings
Online car buying built around you.
Shop Now
Used Cars for Sale
Audi
A6
2021
Used 2021 Audi A6 for Sale in Billerica, MA
01821
Filters (4)
Items 1 to 2 of 4.
EV & Hybrid
Gray
(1)
AWD/4WD
(4)
Location & Delivery
Year
Price & Payments
Price selected
Price
Payment
Min Price
Max Price
Price selected
Price
Payment
Min Price
Max Price
Make, Model & Trim
Audi
Models
A6
100
200
4000
5000
80
90
A3
A4
(1)
A5
(1)
A6
(4)
A6 e-tron
A7
(1)
A8
allroad
Cabriolet
Coupe
e-tron
(1)
e-tron GT
e-tron S
Other Audi Models
Q3
(2)
Q4 e-tron
Q5
(8)
Q6 e-tron
Q7
(3)
Q8
Q8 e-tron
Quattro
R8
RS 3
RS 4
RS 5
RS 6
(1)
RS 7
(1)
RS e-tron GT
RS Q8
S e-tron GT
S3
S4
(1)
S5
S6
S6 e-tron
S7
S8
SQ5
SQ6 e-tron
SQ7
(1)
SQ8
(1)
SQ8 e-tron
TT
TT RS
TTS
V8 Quattro
A6 Trims
Any
2.0T
2.0T Premium
(1)
2.0T Premium Plus
2.0T Prestige
2.7T
2.7T S line
2.8
3.0
3.0T
3.0T allroad Premium Plus
3.0T allroad Prestige
3.0T Competition Prestige
3.0T Premium
(2)
3.0T Premium Plus
3.0T Prestige
3.0T Sport
3.2
3.2 Premium
3.2 Premium Plus
4.2
4.2 Prestige
Premium
Premium Plus
(1)
Prestige
TDI Premium Plus
TDI Prestige
Add Another Make
Audi
Models
A6
100
200
4000
5000
80
90
A3
A4
(1)
A5
(1)
A6
(4)
A6 e-tron
A7
(1)
A8
allroad
Cabriolet
Coupe
e-tron
(1)
e-tron GT
e-tron S
Other Audi Models
Q3
(2)
Q4 e-tron
Q5
(8)
Q6 e-tron
Q7
(3)
Q8
Q8 e-tron
Quattro
R8
RS 3
RS 4
RS 5
RS 6
(1)
RS 7
(1)
RS e-tron GT
RS Q8
S e-tron GT
S3
S4
(1)
S5
S6
S6 e-tron
S7
S8
SQ5
SQ6 e-tron
SQ7
(1)
SQ8
(1)
SQ8 e-tron
TT
TT RS
TTS
V8 Quattro
A6 Trims
Any
2.0T
2.0T Premium
(1)
2.0T Premium Plus
2.0T Prestige
2.7T
2.7T S line
2.8
3.0
3.0T
3.0T allroad Premium Plus
3.0T allroad Prestige
3.0T Competition Prestige
3.0T Premium
(2)
3.0T Premium Plus
3.0T Prestige
3.0T Sport
3.2
3.2 Premium
3.2 Premium Plus
4.2
4.2 Prestige
Premium
Premium Plus
(1)
Prestige
TDI Premium Plus
TDI Prestige
Add Another Make
Mileage
Mileage
Any
Mileage
Any
Condition
(1 selected)
New
(0)
Used
(4)
Manufacturer Certified
(0)
Third-Party Certified
(0)
New
(0)
Used
(4)
Manufacturer Certified
(0)
Third-Party Certified
(0)
Color
Loading...
Drive Type
Loading...
Body Style
Loading...
Vehicle History
Loading...
Features
Loading...
Fuel Type
Loading...
Fuel Economy
Loading...
Transmission
Loading...
Cylinders
Loading...
Engine Displacement
Loading...
Number of Seats
Loading...
Number of Doors
Loading...
Purchase Options
Seller Type
Loading...
Sponsored
Featured Dealer Near You
Hide
Boston Motorsports Maserati and Alfa Romeo
1650 SOLDIERS FIELD RD,
Brighton, MA 02135
1 (855) 261-8973
Used 2021 Audi SQ8 Premium Plus w/ SQ8 Black Optic Package
$54,695
Used 2024 Audi RS Q8
$107,695
Used 2025 Audi RS Q8 performance
$131,695
View All Cars
4 Matches
Sort By:
Relevance
Price - Lowest
Price - Highest
Distance - Closest
Date - Oldest
Date - Newest
Mileage - Lowest
Mileage - Highest
Year - Oldest
Year - Newest
Used
2021 Audi A6
2.0T Premium
61K mi
24,995
See payment
Dealer Fees Included
No Accidents
Price Drop
Used
2021 Audi A6
Premium Plus
81K mi
24,560
See payment
Used
2021 Audi A6
3.0T Premium
87K mi
25,998
See payment
No Accidents
My Wallet
Find it Fast.
Keep it Affordable.
Monthly Payment
Credit Rating
Excellent (740-900)
Credit Rating
Excellent (740-900)
Very Good (700-739)
Good (670-699)
Fair (630-669)
Rebuilding (580-629)
Verify My Credit
Down Payment
Trade-In Value
$0
Trade-In Value
Est. Trade-In Value
Get My Kelley Blue Book® CarValue
Amount Owed on Trade-In
Get My Payoff Quote
Get My Kelley Blue Book® Car Value
$
Based on 4.5% APR for mos.
Update Settings
Search Available Cars
Newly Listed
Used
2021 Audi A6
3.0T Premium
41K mi
Contact Dealer For Price
See payment
No Accidents
Consider New, Similar Payment
2026 Audi A6
Premium Plus
0 mi
67,218
Similar Vehicles for Sale
Used 2021 Audi A6 Wagons for Sale
<!--{"relevance":[false,{}]}-->
