Used 2018 Audi S4 for Sale near California
Shop with transparent pricing.
Only show listings that include dealer fees- 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
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 99,171
- Stock #:
- NG108451A
- VIN:
- WAUB4AF47JA232018
Sponsored Listing
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
99,171 mi
$16,121
- Year:
- 2018
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 354 hp 3L V6
- Exterior color:
- Silver
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 103,255
- Stock #:
- 052838
- VIN:
- WAUB4AF4XJA052838
Sponsored Listing
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
103,255 mi
$16,000
- Year:
- 2018
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 354 hp 3L V6
- Exterior color:
- Silver
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 103,255
- Stock #:
- 052838
- VIN:
- WAUB4AF4XJA052838
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
103,255 mi
$16,000
- 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
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 99,171
- Stock #:
- NG108451A
- VIN:
- WAUB4AF47JA232018
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
99,171 mi
$16,121
- 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:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 83,389
- Stock #:
- 069752
- VIN:
- WAUB4AF46KA069752
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
83,389 mi
$27,180
- 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:
- Automatic
- Mileage:
- 58,634
- Stock #:
- 70015252
- VIN:
- WAUB4AF47KA112625
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
58,634 mi
$30,147
- 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:
- Magma Red
- Transmission:
- Automatic
- Mileage:
- 120,474
- Stock #:
- 8054M
- VIN:
- WAUC4AF41JA002463
2018 Audi S4
3.0T quattro Prestige Sedan AWD
120,474 mi
$18,141
- Year:
- 2018
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 354 hp 3L V6
- Exterior color:
- Blue
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Gray
- Transmission:
- Automatic
- Mileage:
- 119,649
- Stock #:
- 17308
- VIN:
- WAUC4AF49JA010620
2018 Audi S4
3.0T quattro Prestige Sedan AWD
119,649 mi
$19,403
- 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 Milano
- Transmission:
- Automatic
- Mileage:
- 95,004
- Stock #:
- 1791
- VIN:
- WAUB4AF49KA004748
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
95,004 mi
$28,700
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Blue Metallic
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Rotor Gray
- Transmission:
- 8-Speed Automatic
- Mileage:
- 27,546
- Stock #:
- VU1909P
- VIN:
- WAUA4AF46KA103295
2019 Audi S4
3.0T quattro Premium Sedan AWD
27,546 mi
$35,021
- 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:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 94,733
- Stock #:
- 111743
- VIN:
- WAUB4AF48KA111743
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
94,733 mi
$27,175
- Year:
- 2018
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 354 hp 3L V6
- Exterior color:
- Navarra Blue Metallic
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 87,248
- Stock #:
- JA187905P
- VIN:
- WAUB4AF45JA187905
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
87,248 mi
$24,622
- 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:
- Automatic
- Mileage:
- 105,762
- Stock #:
- 003887
- VIN:
- WAUC4AF43JA003887
2018 Audi S4
3.0T quattro Prestige Sedan AWD
105,762 mi
$21,490
CarGurus Analysis:
2018 Audi S4
With 131 currently listed for sale and an average price of $23,628.00, 29.8% 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.
78.6% of 2018 S4 models on CarGurus are accident free.
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Red
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 72,260
- Stock #:
- 049367CL
- VIN:
- WAUB4BF45KA049367
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
72,260 mi
$30,919
- 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:
- Gray
- Transmission:
- Automatic
- Mileage:
- 62,258
- Stock #:
- 28510312
- VIN:
- WAUB4AF47JA002480
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
62,258 mi
$29,147
- 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:
- 47,656
- Stock #:
- 19892
- VIN:
- WAUC4AF48KA105803
2019 Audi S4
3.0T quattro Prestige Sedan AWD
47,656 mi
$36,492
- Year:
- 2018
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 354 hp 3L V6
- Exterior color:
- Blue
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 119,329
- Stock #:
- K17261Z
- VIN:
- WAUB4AF43JA001584
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
119,329 mi
$22,332
- 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:
- 64,315
- Stock #:
- 014298
- VIN:
- WAUB4AF4XKA014298
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
64,315 mi
$33,018
- Year:
- 2018
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 354 hp 3L V6
- Exterior color:
- BRILLIANT BLACK
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Red
- Transmission:
- Automatic
- Mileage:
- 96,592
- Stock #:
- 6104228
- VIN:
- WAUB4AF47JA097722
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
96,592 mi
$26,254
- 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:
- 114,153
- Stock #:
- 002107
- VIN:
- WAUB4AF47JA002107
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
114,153 mi
$21,988
- 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:
- 8-Speed Automatic
- Mileage:
- 46,799
- Stock #:
- 5660
- VIN:
- WAUB4AF49KA116207
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
46,799 mi
$35,348
- 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
- Transmission:
- Automatic
- Mileage:
- 66,129
- Stock #:
- 1865
- VIN:
- WAUB4AF40JA056803
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2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
66,129 mi
$34,078
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Ibis White
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 60,823
- Stock #:
- 065248
- VIN:
- WAUB4AF48KA065248
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
60,823 mi
$34,612
CarGurus Analysis: 2018 Audi S4
Summary
With 131 currently listed for sale and an average price of $23,628.00, 29.8% 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.
78.6% of 2018 S4 models on CarGurus are accident free.
Why it stands out
The 2018 Audi S4 is a standout in the luxury performance sedan segment, offering a blend of power, comfort, and advanced technology. It features a robust 3.0-liter twin-scroll turbocharged V6 engine that produces 354 horsepower, paired with an eight-speed automatic transmission and standard Quattro all-wheel drive, ensuring excellent traction and handling. The S4's interior is both luxurious and functional, equipped with high-quality materials and the latest infotainment technology, including a reconfigurable Virtual Cockpit. While it may not be the most athletic option compared to rivals like the BMW M340i, it excels in providing a smooth and comfortable ride, making it appealing for those who prioritize a refined driving experience. Additionally, the 2018 model benefits from a solid reliability rating and a good balance of features, making it a compelling choice for buyers looking for a used luxury sedan.
Other model years to consider
- Average price: $29,485.00
- Good/great deal percentage: 28.6%
- User rating: 5 / 5
- Total listings: 147
- Average price: $43,029.00
- Good/great deal percentage: 36.6%
- Total listings: 142
This analysis is based on CarGurus' proprietary market data from August 3, 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 in Los Angeles: The market in Los Angeles, CA ($16,000) offers the most affordable options, likely due to higher inventory levels and demand for budget-friendly vehicles.
- Highest Prices in Chicago: Conversely, Chicago, IL ($25,290) commands the highest average price, indicating a stronger demand or lower inventory for this model in the area.
- Inventory Variation: Cities like Philadelphia (36 listings) and Washington, DC (36 listings) show a healthy inventory, with average prices around $23,320 and $19,863, respectively, suggesting stable pricing dynamics.
City-Level Pricing
| City | Total Listings | Avg Price |
|---|---|---|
| Chicago, IL | 32 | $25,290 |
| New York, NY | 34 | $24,929 |
| Philadelphia, PA | 36 | $23,320 |
| Dallas, TX | 31 | $24,995 |
| Houston, TX | 30 | $21,250 |
| Miami, FL | 22 | $20,293 |
| Washington, DC | 36 | $19,863 |
| Atlanta, GA | 29 | $16,449 |
| Los Angeles, CA | 21 | $16,000 |
Pricing Analysis by Model Year
Key Insights
- Significant Depreciation for Older Models: The 2015 Audi S4 shows the steepest depreciation at -66.8% compared to its original MSRP, indicating a strong decline in value as the vehicle ages.
- Recent Models Retain Value: The 2024 Audi S4 is currently priced at $44,931, which is -17.9% below its MSRP, reflecting a relatively stable demand for newer models.
- Best Value in 2021 Model Year: The 2021 Audi S4 is priced at $33,332, representing a -33.2% depreciation, making it a potentially attractive option for buyers looking for a balance between price and features.
Model Year Pricing
| Model Year | Original MSRP | Avg Price | Price vs MSRP |
|---|---|---|---|
| 2024 | $54,500 | $44,931 | -17.9% |
| 2023 | $52,800 | $42,293 | -19.9% |
| 2022 | $51,900 | $38,378 | -26.1% |
| 2021 | $49,900 | $33,332 | -33.2% |
| 2020 | $49,900 | $30,661 | -38.7% |
| 2019 | $50,200 | $29,731 | -40.7% |
| 2016 | $49,200 | $22,634 | -54.0% |
| 2015 | $48,400 | $16,080 | -66.8% |
| 2014 | $48,100 | $17,982 | -62.6% |
| 2013 | $47,600 | $15,292 | -67.9% |
| 2012 | $47,300 | $12,850 | -72.8% |
These recommendations are based on CarGurus' proprietary market data from July 30, 2026, CarGurus experts' opinions, and generative AI.
FAQs
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