Used 2018 Audi S4 for Sale nearHouston, TX
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
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
99,171 mi
$18,146
- 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 Leather
- Transmission:
- Automatic
- Mileage:
- 98,291
- Stock #:
- 002964
- VIN:
- WAUB4AF47JA002964
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
98,291 mi
$20,225
- 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
$28,250
- 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:
- Magma Red
- Transmission:
- 8-Speed Automatic
- Mileage:
- 70,326
- VIN:
- WAUB4AF42JA151640
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
70,326 mi
$25,562
- 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:
- 8-Speed Automatic
- Mileage:
- 128,253
- Stock #:
- 148AKR
- VIN:
- WAUB4AF46KA109149
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
128,253 mi
$19,263
- 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
$19,429
- 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
$30,647
- 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:
- 74,980
- Stock #:
- 043513
- VIN:
- WAUB4AF41KA043513
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2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
74,980 mi
No Price Listed
- 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
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Photos coming soon
2018 Audi S4
3.0T quattro Prestige Sedan AWD
119,649 mi
No Price Listed
- 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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Photos coming soon
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
66,129 mi
$35,512
- 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:
- 87,242
- Stock #:
- JA187905P
- VIN:
- WAUB4AF45JA187905
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
87,242 mi
$31,137
- Year:
- 2018
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 354 hp 3L V6
- Exterior color:
- Red
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 116,631
- Stock #:
- 2594
- VIN:
- WAUB4AF46JA009534
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
116,631 mi
$20,679
- 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
$24,924
CarGurus Analysis:
2018 Audi S4
With 135 currently listed for sale and an average price of $23,689.00, 29.6% 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.
77.8% of 2018 S4 models on CarGurus are accident free.
The 2018 Audi S4 features a powerful 3.0-liter twin-scroll turbocharged V6 engine, producing 354 horsepower and 369 pound-feet of torque, paired with an eight-speed automatic transmission and standard all-wheel drive.
- 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
$32,241
- 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
$20,218
- 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:
- 8-Speed Automatic
- Mileage:
- 121,038
- Stock #:
- ND3603A
- VIN:
- WAUB4AF46JA232107
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
121,038 mi
$19,132
- 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:
- 39,704
- Stock #:
- 1TC3993A
- VIN:
- WAUB4AF40KA023740
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
39,704 mi
$34,788
- 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
$30,297
- 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
$37,765
- 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
$23,492
- 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
$36,856
- 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
$33,382
- 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:
- 73,027
- Stock #:
- 020491
- VIN:
- WAUA4AF47KA020491
2019 Audi S4
3.0T quattro Premium Sedan AWD
73,027 mi
$28,184
CarGurus Analysis: 2018 Audi S4
Summary
With 135 currently listed for sale and an average price of $23,689.00, 29.6% 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.
77.8% of 2018 S4 models on CarGurus are accident free.
The 2018 Audi S4 features a powerful 3.0-liter twin-scroll turbocharged V6 engine, producing 354 horsepower and 369 pound-feet of torque, paired with an eight-speed automatic transmission and standard all-wheel drive.
Why it stands out
The 2018 Audi S4 is a standout in the luxury performance sedan segment, combining power, sophistication, and advanced technology. With its 3.0-liter twin-scroll turbocharged V6 engine, it delivers an impressive 354 horsepower, allowing for exhilarating acceleration and a zero-to-60 mph time of just 4.4 seconds. The standard Quattro all-wheel drive system enhances traction and stability, making it a reliable choice for various driving conditions. Inside, the S4 boasts a luxurious and understated interior, equipped with modern technology such as the reconfigurable Virtual Cockpit and a user-friendly infotainment system. While it may not be the most athletic handler compared to some rivals, it offers a smooth ride and a well-rounded driving experience. The 2018 model also benefits from a strong reliability rating, making it an appealing option for buyers seeking a blend of performance and everyday usability.
Other model years to consider
- Average price: $29,293.00
- Good/great deal percentage: 28.9%
- User rating: 5 / 5
- Total listings: 149
- Average price: $43,072.00
- Good/great deal percentage: 36.5%
- Total listings: 148
This analysis is based on CarGurus' proprietary market data from July 31, 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: Houston, TX Market Report
Pricing by Nearby Locations
Market Area: Houston, TX
Key Insights
- Price Consistency in Suburbs: Both Katy, TX and Conroe, TX have the same average price of $21,250, indicating a stable market with similar demand and supply dynamics.
- Lowest Price in Huntsville: Huntsville, TX offers the lowest average price at $20,000, suggesting either a higher inventory or lower demand in that area.
- Galveston Slightly Higher: Galveston, TX has a higher average price of $22,499, which may reflect a more affluent market or lower inventory levels.
City-Level Pricing
| City | Total Listings | Avg Price |
|---|---|---|
| Katy, TX | 30 | $21,250 |
| Conroe, TX | 30 | $21,250 |
| Galveston, TX | 29 | $22,499 |
| Huntsville, TX | 29 | $20,000 |
Pricing Analysis by Model Year
Key Insights
- Significant Depreciation for Older Models: The 2013 Audi S4 shows a drastic drop in value, priced at $8,500, which is approximately 82.2% below its original MSRP.
- Recent Model Retains Value: The 2023 Audi S4 is currently priced at $37,996, reflecting a 28.5% depreciation from its original MSRP, indicating strong demand for newer models.
- Older Model Value Gap: The 2012 Audi S4 is priced at $13,777, showing a 70.9% depreciation, which is still significant but less than the 2013 model.
Model Year Pricing
| Model Year | Original MSRP | Avg Price | Price vs MSRP |
|---|---|---|---|
| 2023 | $52,800 | $37,996 | -28.5% |
| 2013 | $47,600 | $8,500 | -82.2% |
| 2012 | $47,300 | $13,777 | -70.9% |
These recommendations are based on CarGurus' proprietary market data from July 30, 2026, CarGurus experts' opinions, and generative AI.
FAQs
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