Used 2018 Audi S4 for SaleNationwide
135 vehicles found
- 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:
- Gray
- Transmission:
- 8-Speed Automatic
- Mileage:
- 107,700
- VIN:
- WAUB4AF46KA034144
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
107,700 mi
$24,233
- 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
2019 Audi S4
3.0T quattro Prestige Sedan AWD
60,572 mi
$28,974
- 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
- Exterior color:
- Daytona Gray Pearl Effect
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 64,689
- Stock #:
- 111437
- VIN:
- WAUB4AF41KA111437
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
64,689 mi
$30,494
- 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:
- 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:
- 2018
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 354 hp 3L V6
- Exterior color:
- Daytona Gray Pearl Effect
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 75,320
- Stock #:
- JA128738
- VIN:
- WAUC4AF48JA128738
2018 Audi S4
3.0T quattro Prestige Sedan AWD
75,320 mi
$24,472
- 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:
- 2018
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 354 hp 3L V6
- Exterior color:
- Gray
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 54,445
- Stock #:
- 10984
- VIN:
- WAUB4AF40JA037829
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
54,445 mi
$28,295
- 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
$29,295
- 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:
- Black Metallic
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 49,755
- Stock #:
- 561319A2
- VIN:
- WAUB4AF48JA007025
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
49,755 mi
$30,248
- 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
CarGurus Analysis:
2018 Audi S4
With 130 currently listed for sale and an average price of $24,752.00, 32.3% 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.
65.4% of 2018 Audi S4 models on CarGurus are accident free.
- 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
$21,744
- 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
- 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:
- 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:
- 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:
- 8-Speed Automatic
- Mileage:
- 115,109
- Stock #:
- JA121332
- VIN:
- WAUB4AF46JA121332
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
115,109 mi
$17,992
- 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:
- Automatic
- Mileage:
- 71,366
- Stock #:
- TJA002171
- VIN:
- WAUC4AF4XJA002171
2018 Audi S4
3.0T quattro Prestige Sedan AWD
71,366 mi
$23,224
- Year:
- 2018
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 354 hp 3L V6
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Transmission:
- 8-Speed Automatic
- Mileage:
- 157,980
- Stock #:
- 142173
- VIN:
- WAUB4AF47JA142173
2018 Audi S4
3.0T quattro Prestige Sedan AWD
157,980 mi
$12,900
- 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:
- 86,629
- Stock #:
- X009959
- VIN:
- WAUB4AF43KA009959
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
86,629 mi
$22,898
- 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
CarGurus Analysis: 2018 Audi S4
Summary
With 130 currently listed for sale and an average price of $24,752.00, 32.3% 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.
65.4% of 2018 Audi S4 models on CarGurus are accident free.
Why it stands out
The 2018 Audi S4 is a standout in the sport sedan segment, thanks to its impressive blend of performance, luxury, and technology. With a powerful 3.0-liter turbocharged V6 engine delivering 354 horsepower and standard Quattro all-wheel drive, it offers vigorous acceleration and confident handling. The interior is equipped with high-quality materials, advanced infotainment features, and a sleek design, making it an appealing choice for buyers who value both comfort and performance. Despite some critiques regarding its handling compared to rivals like the BMW M340i, the S4 excels with a smooth ride and comprehensive standard features. Audi's reliability reputation is above average for this model year, and with favorable user ratings, the 2018 S4 is a compelling option for enthusiasts and daily drivers alike.
Other model years to consider
- Average price: $28,391.00
- Good/great deal percentage: 31.7%
- User rating: 5 / 5
- Total listings: 145
- Average price: $43,742.00
- Good/great deal percentage: 30.6%
- Total listings: 144
This analysis is based on CarGurus' proprietary market data from June 29, 2026, CarGurus experts' opinions, and generative AI.
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.
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