Used 2018 Audi S4 for Sale near Houston, TX
29 results
CarGurus Analysis:
2018 Audi S4
With 127 currently listed for sale and an average price of $23,772.00, 31.5% 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.
58.3% of 2018 S4 models on CarGurus are accident free.
CarGurus Analysis: 2018 Audi S4
Summary
With 127 currently listed for sale and an average price of $23,772.00, 31.5% 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.
58.3% of 2018 S4 models on CarGurus are accident free.
Why it stands out
The 2018 Audi S4 is a standout model in the luxury sports sedan segment, known for its blend of performance and elegance. Equipped with a turbocharged V6 engine producing 354 horsepower, this model balances speed and everyday usability, achieving a 0-60 mph time of just 4.4 seconds. Its standard Quattro all-wheel drive ensures excellent traction and stability, making it a reliable choice in various driving conditions. The S4 also boasts an upscale interior with high-quality materials and advanced technology features, including a reconfigurable Virtual Cockpit and optional adaptive cruise control. While it doesn’t offer the most thrilling driving experience compared to some of its rivals, the S4 compensates with a smooth ride and ample comfort. This combination of performance, luxury, and practicality makes the 2018 Audi S4 appealing to a wide range of buyers.
Other model years to consider
- Average price: $44,077.00
- Good/great deal percentage: 31.7%
- Accident-free percentage: 84.5%
- Total listings: 142
- Average price: $28,473.00
- Good/great deal percentage: 30.9%
- User rating: 5 / 5
- Total listings: 136
This analysis is based on CarGurus' proprietary market data from May 25, 2026, CarGurus experts' opinions, and generative AI.
Relevant articles
2025 Audi S4 Pricing, Specs, and Release Date
The 2025 Audi S4, the high-performance version of the the brand's A4 model, returns with its 349-horsepower turbocharged engine and an updated array of features.
Who Makes Audi Cars?
Audi is a German luxury automaker that makes a full line of cars, SUVs, performance vehicles, and EVs. Volkswagen Group owns Audi, and there are multiple Audi models that share platforms with VW counterparts.
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: Houston, TX Market Report
Pricing by Nearby Locations
Market Area: Houston, TX
Key Insights
- Lowest Prices in Conroe: Conroe, TX, offers the lowest average price at $21,000, indicating a potentially price-sensitive market with ample inventory.
- Katy's Competitive Rate: Katy, TX, lists the highest amount of inventory (28 listings) but maintains a competitive pricing at $22,996, suggesting a balanced market between supply and demand.
- Price Variation among Nearby Cities: Galveston, TX, averages $24,991, likely reflecting a different demographic or demand profile compared to the other locations.
City-Level Pricing
| City | Total Listings | Avg Price |
|---|---|---|
| Katy, TX | 28 | $22,996 |
| Galveston, TX | 28 | $24,991 |
| Huntsville, TX | 27 | $21,000 |
| Conroe, TX | 27 | $21,000 |
Pricing Analysis by Model Year
Key Insights
- Significant Depreciation in Older Models: The 2013 Audi S4 showcases a steep depreciation at -81.5% compared to its original MSRP, highlighting the value lost over time for older models.
- Recent Models Retain Value: The 2023 Audi S4 is retailing at $38,248, reflecting a depreciation of only -27.4%, indicating strong demand for newer options.
- 2020 Model Represents Strong Midpoint Value: The 2020 Audi S4, priced at $31,990, retains reasonably good value with a depreciation of -35.5%, making it a potential sweet spot for buyers looking for a modern car without the latest model's premium.
Model Year Pricing
| Model Year | Original MSRP | Avg Price | Price vs MSRP |
|---|---|---|---|
| 2023 | $52,800 | $38,248 | -27.4% |
| 2020 | $49,900 | $31,990 | -35.5% |
| 2013 | $47,600 | $8,800 | -81.5% |
These recommendations are based on CarGurus' proprietary market data from May 21, 2026, CarGurus experts' opinions, and generative AI.
