Used 2018 Audi S4 for Sale Nationwide
129 results
- Year:
- 2018
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 354 hp 3L V6
- Exterior color:
- Glacier White
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 67,374
- Stock #:
- JA008996
- VIN:
- WAUC4AF40JA008996
2018 Audi S4
3.0T quattro Prestige Sedan AWD
67,374 mi
$25,107
- Year:
- 2018
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 354 hp 3L V6
- Exterior color:
- Mythos Black Metallic
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 86,166
- Stock #:
- 262558A
- VIN:
- WAUB4AF42JA063591
-$1,000
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
86,166 mi
$23,813
$22,813
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Navarra Blue Metallic
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 60,572
- Stock #:
- 11778
- VIN:
- WAUC4AF42KA006300
-$967
2019 Audi S4
3.0T quattro Prestige Sedan AWD
60,572 mi
$29,941
$28,974
- Year:
- 2018
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 354 hp 3L V6
- Exterior color:
- Black
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 80,189
- Stock #:
- 7388
- VIN:
- WAUC4AF46JA002152
2018 Audi S4
3.0T quattro Prestige Sedan AWD
80,189 mi
$24,590
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Florett Silver Metallic
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Magma Red
- Transmission:
- 8-Speed Automatic
- Mileage:
- 356
- Stock #:
- 2191UA
- VIN:
- WAUB4AF4XKA037550
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
356 mi
$39,495
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Glacier White
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 87,059
- Stock #:
- PC42734A
- VIN:
- WAUB4AF45KA085781
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
87,059 mi
$25,716
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Transmission:
- 8-Speed Automatic
- Mileage:
- 125,275
- Stock #:
- 110117
- VIN:
- WAUC4AF45KA110117
2019 Audi S4
3.0T quattro Prestige Sedan AWD
125,275 mi
$18,220
- Year:
- 2018
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 354 hp 3L V6
- Exterior color:
- Blue Metallic
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 90,220
- Stock #:
- P13565
- VIN:
- WAUB4AF48JA001919
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
90,220 mi
$22,644
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Black Metallic
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 78,981
- Stock #:
- KA017122P
- VIN:
- WAUB4AF4XKA017122
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
78,981 mi
$27,623
- Year:
- 2018
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 354 hp 3L V6
- Exterior color:
- Glacier White
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Red
- Transmission:
- 8-Speed Automatic
- Mileage:
- 76,966
- Stock #:
- CP3057
- VIN:
- WAUB4AF46JA065781
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
76,966 mi
$25,989
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Black
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 84,215
- Stock #:
- 19AS4P84
- VIN:
- WAUB4AF44KA108998
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
84,215 mi
$25,777
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Mythos Black Metallic
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Magma Red
- Transmission:
- 8-Speed Automatic
- Mileage:
- 86,571
- Stock #:
- 08227
- VIN:
- WAUB4AF44KA006228
2019 Audi S4
3.0T quattro Prestige Sedan AWD
86,571 mi
$25,920
- Year:
- 2018
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 354 hp 3L V6
- Exterior color:
- Black
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 70,338
- Stock #:
- 001946
- VIN:
- WAUB4AF40JA001946
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
70,338 mi
$25,975
CarGurus Analysis:
2018 Audi S4
With 128 currently listed for sale and an average price of $24,288.00, 36.7% of 2018 Audi S4s for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2018 Audi S4 4.67 / 5 stars.
59.4% of 2018 S4 models on CarGurus are accident free.
The 2018 Audi S4 features a powerful 3.0-liter twin-scroll turbocharged V6 engine, delivering 354 horsepower and excellent acceleration, making it a standout in the luxury sport sedan category.
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- White
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 103,412
- Stock #:
- PKA025946
- VIN:
- WAUC4BF45KA025946
-$2,199
2019 Audi S4
3.0T quattro Prestige Sedan AWD
103,412 mi
$22,194
$19,995
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Daytona Gray Pearl Effect
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 86,948
- Stock #:
- P2240
- VIN:
- WAUB4AF41KA038375
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
86,948 mi
$25,394
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Quantum Gray
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 110,270
- Stock #:
- 5644
- VIN:
- WAUB4AF48KA045937
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
110,270 mi
$19,995
- Year:
- 2018
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 354 hp 3L V6
- Exterior color:
- Ibis White
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 101,651
- VIN:
- WAUB4AF47JA003368
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
101,651 mi
$19,999
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Gray
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Red
- Transmission:
- 8-Speed Automatic
- Mileage:
- 38,381
- Stock #:
- 9719
- VIN:
- WAUB4AF41KA056438
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
38,381 mi
$35,501
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Gray
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Red
- Transmission:
- 8-Speed Automatic
- Mileage:
- 60,541
- Stock #:
- 008264
- VIN:
- WAUB4AF47KA008264
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
60,541 mi
$30,428
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Daytona Gray Pearl
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 73,324
- Stock #:
- HDT5643B
- VIN:
- WAUB4AF42KA013324
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
73,324 mi
$30,019
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Gray
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Transmission:
- Automatic
- Mileage:
- 54,114
- Stock #:
- YKA109965
- VIN:
- WAUB4AF45KA109965
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
54,114 mi
$30,789
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Black
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Red
- Transmission:
- 8-Speed Automatic
- Mileage:
- 82,041
- Stock #:
- 089568
- VIN:
- WAUB4AF43KA089568
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
82,041 mi
$26,288
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Glacier White Metallic
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 70,651
- Stock #:
- 11839
- VIN:
- WAUC4AF41KA012606
-$1,017
2019 Audi S4
3.0T quattro Prestige Sedan AWD
70,651 mi
$29,937
$28,920
CarGurus Analysis: 2018 Audi S4
Summary
With 128 currently listed for sale and an average price of $24,288.00, 36.7% of 2018 Audi S4s for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2018 Audi S4 4.67 / 5 stars.
59.4% of 2018 S4 models on CarGurus are accident free.
The 2018 Audi S4 features a powerful 3.0-liter twin-scroll turbocharged V6 engine, delivering 354 horsepower and excellent acceleration, making it a standout in the luxury sport sedan category.
Why it stands out
The 2018 Audi S4 is a remarkable vehicle that combines luxury with high performance. Its twin-scroll turbocharged V6 engine produces an impressive 354 horsepower, offering exhilarating acceleration with a zero-to-60 mph time of just 4.4 seconds. The car’s Quattro all-wheel drive system ensures excellent handling and stability, making it suitable for various driving conditions. Audi's commitment to quality is also evident in the S4’s sophisticated interior, which is equipped with high-end materials and advanced technology, including the reconfigurable Virtual Cockpit and a responsive infotainment system. While some competitors may offer a more engaging driving experience, the S4 excels in providing a smooth ride and a well-rounded driving experience. Overall, the 2018 Audi S4 stands out for its blend of performance, luxury, and practicality, appealing to buyers seeking a sport sedan with a touch of class.
Other model years to consider
- Average price: $28,804.00
- Good/great deal percentage: 34.9%
- User rating: 5 / 5
- Total listings: 146
- Average price: $44,042.00
- Good/great deal percentage: 36.6%
- Accident-free percentage: 85.5%
- Total listings: 145
This analysis is based on CarGurus' proprietary market data from June 22, 2026, CarGurus experts' opinions, and generative AI.
Relevant articles
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Audi S4 Buying Guide: Cost, Reliability, and the Best Years to Buy
Discover the ultimate buying guide for purchasing a used Audi S4, covering every generation since 2000. Whether you're a first-time buyer or a Audi enthusiast, this comprehensive overview will help you research your next pre-owned Audi S4.
4.7 Overall rating
Filter by rating
Byron L
Reviewed a 2018 Audi 3.0T quattro Premium Plus Sedan AWD on Jun 27, 2025
Smooth car runs nice very nice interior worth the price for all the features
Safiu I
Reviewed a 2018 Audi S4 on Mar 17, 2021
Bought the 2018 Audi S4. I love it. It has everything I wanted. Blind spot monitoring, Head up display, land keep assist pretty much everything. HP is Impressive as well does 354hp with 369 pounds of torque, packs quite a punch . Driving is very smooth and seats have massage capabilities . Definitely a comfort to drive.
Gabrielle S
Reviewed a 2018 Audi S4 on May 13, 2023
Great car. Some items for a 2019 model seem To be outdated. Examples - No built in navigation, side mirrors do not close in and out, other than that. Amazing car
2018 Audi S4 Trims
| Trim type | MSRP |
|---|---|
| 3.0 TFSI quattro Progressiv Sedan AWD | -- |
| 3.0T quattro Premium Plus Sedan AWD | $51,400 |
| 3.0T quattro Prestige Sedan AWD | $55,800 |
| 3.0 TFSI quattro Technik Sedan AWD | -- |
2018 Audi S4 Price Trends
CarGurus tracks the prices of millions of used car listings every year. See how the average price of 2018 Audi S4 prices has changed over time.
See more price trends2018 Audi S4 Pricing Analysis
Pricing by Popular US Cities
Market Area: Nationwide
Key Insights
- Lowest Prices Found in Miami: With an average price of $17,986, Miami's market offers the most budget-friendly options for the Audi S4.
- Highest Average Price in Philadelphia: At $32,995, Philadelphia's pricing reflects a premium market, likely due to demand and inventory factors.
- Inventory Trends: New York City shows a respectable number of listings (40 listings) but at a relatively lower price point ($23,340), indicating a potential oversupply in that area.
City-Level Pricing
| City | Total Listings | Avg Price |
|---|---|---|
| Philadelphia, PA | 37 | $32,995 |
| Dallas, TX | 33 | $28,997 |
| Houston, TX | 33 | $22,624 |
| Miami, FL | 26 | $17,986 |
| Atlanta, GA | 36 | $21,448 |
| Washington, DC | 39 | $27,298 |
| New York, NY | 40 | $23,340 |
| Boston, MA | 41 | $24,224 |
| Chicago, IL | 36 | $23,617 |
Pricing Analysis by Model Year
Key Insights
- Premium for Newer Models: The 2024 Audi S4 is priced at $46,827, reflecting a premium demand as it is only one model year old.
- Declining Value Over Time: The price drops sharply for older models, with the 2013 Audi S4 showing a decline of 68.4% vs MSRP, indicating strong depreciation as the vehicle ages.
- Strong Value Moves Between 2018-2021: These model years offer competitive prices with relatively smaller depreciation, particularly the 2021 model, which now averages $34,730, down 30.2% from MSRP.
Model Year Pricing
| Model Year | Original MSRP | Avg Price | Price vs MSRP |
|---|---|---|---|
| 2024 | $54,500 | $46,827 | -14.2% |
| 2023 | $52,800 | $43,547 | -17.5% |
| 2022 | $51,900 | $39,953 | -23.1% |
| 2021 | $49,900 | $34,730 | -30.2% |
| 2020 | $49,900 | $30,961 | -38.0% |
| 2019 | $50,200 | $28,706 | -42.8% |
| 2016 | $49,200 | $20,623 | -58.2% |
| 2015 | $48,400 | $17,027 | -64.8% |
| 2014 | $48,100 | $17,854 | -62.9% |
| 2013 | $47,600 | $14,996 | -68.4% |
| 2012 | $47,300 | $12,294 | -74.0% |
These recommendations are based on CarGurus' proprietary market data from June 25, 2026, CarGurus experts' opinions, and generative AI.
