(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
A4
2021
Used 2021 Audi A4 for Sale in Boulder, CO
80302
Filters (4)
Items 1 to 2 of 8.
EV & Hybrid
Automatic
(3)
Honda
(42)
Lexus
(14)
AWD/4WD
(3)
Chevrolet
(148)
Acura
(8)
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
A4
100
200
4000
5000
80
90
A3
A4
(3)
A5
(4)
A6
(1)
A6 e-tron
A7
A8
(1)
allroad
Cabriolet
Coupe
e-tron
(2)
e-tron GT
e-tron S
Other Audi Models
Q3
(4)
Q4 e-tron
Q5
(9)
Q6 e-tron
Q7
(8)
Q8
(3)
Q8 e-tron
Quattro
R8
RS 3
RS 4
RS 5
RS 6
RS 7
(1)
RS e-tron GT
RS Q8
(1)
S e-tron GT
S3
S4
S5
(3)
S6
S6 e-tron
S7
S8
SQ5
SQ6 e-tron
SQ7
(1)
SQ8
(1)
SQ8 e-tron
TT
TT RS
TTS
V8 Quattro
A4 Trims
Any
1.8T
2.0T
2.0T allroad Premium
2.0T allroad Premium Plus
2.0T allroad Premium Plus
2.0T allroad Prestige
2.0T Premium
(1)
2.0T Premium Plus
(2)
2.0T Premium S
2.0T Prestige
2.0T Titanium
2.0T Ultra Premium
2.0T Ultra Premium Plus
2.0T Ultra Prestige
2.8
3.0
3.2
3.2 Premium Plus
3.2 Prestige
Allroad
Add Another Make
Audi
Models
A4
100
200
4000
5000
80
90
A3
A4
(3)
A5
(4)
A6
(1)
A6 e-tron
A7
A8
(1)
allroad
Cabriolet
Coupe
e-tron
(2)
e-tron GT
e-tron S
Other Audi Models
Q3
(4)
Q4 e-tron
Q5
(9)
Q6 e-tron
Q7
(8)
Q8
(3)
Q8 e-tron
Quattro
R8
RS 3
RS 4
RS 5
RS 6
RS 7
(1)
RS e-tron GT
RS Q8
(1)
S e-tron GT
S3
S4
S5
(3)
S6
S6 e-tron
S7
S8
SQ5
SQ6 e-tron
SQ7
(1)
SQ8
(1)
SQ8 e-tron
TT
TT RS
TTS
V8 Quattro
A4 Trims
Any
1.8T
2.0T
2.0T allroad Premium
2.0T allroad Premium Plus
2.0T allroad Premium Plus
2.0T allroad Prestige
2.0T Premium
(1)
2.0T Premium Plus
(2)
2.0T Premium S
2.0T Prestige
2.0T Titanium
2.0T Ultra Premium
2.0T Ultra Premium Plus
2.0T Ultra Prestige
2.8
3.0
3.2
3.2 Premium Plus
3.2 Prestige
Allroad
Add Another Make
Mileage
Mileage
Any
Mileage
Any
Condition
(1 selected)
New
(0)
Used
(3)
Manufacturer Certified
(0)
Third-Party Certified
(0)
New
(0)
Used
(3)
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
Audi Fort Collins
3003 S COLLEGE AVE,
Fort Collins, CO 80525
(970) 821-8760
New 2025 Audi SQ5 Premium Plus
$69,065
New 2026 Audi Q7 2.0T Premium
$57,895
New 2026 Audi A3 2.0T Premium
$48,110
View All Cars
3 Matches
Sort By:
Relevance
Price - Lowest
Price - Highest
Distance - Closest
Date - Oldest
Date - Newest
Mileage - Lowest
Mileage - Highest
Year - Oldest
Year - Newest
Price Drop
Used
2021 Audi A4
2.0T Premium
33K mi
25,099
See payment
Dealer Fees Included
No Accidents
Price Drop
Used
2021 Audi A4
2.0T Premium
33K mi
25,099
See payment
Dealer Fees Included
No Accidents
360°
Used
2021 Audi A4
2.0T Premium Plus
31K mi
26,990
See payment
No Accidents
Used
2021 Audi A4
2.0T Premium Plus
50K mi
23,999
See payment
No Accidents
<!--{"relevance":[false,{}]}-->
