Used 2018 Audi S4 for Sale near Denver, CO
25 results
CarGurus Analysis:
2018 Audi S4
With 126 currently listed for sale and an average price of $23,726.00, 34.1% of 2018 Audi S4 models for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2018 Audi S4 4.67 / 5 stars.
56.3% of 2018 S4 models on CarGurus are accident free.
The 2018 Audi S4 features a 3.0-liter twin-scroll turbocharged V6 engine producing 354 horsepower, paired with an eight-speed automatic transmission, and includes all-wheel drive as standard for enhanced performance.
CarGurus Analysis: 2018 Audi S4
Summary
With 126 currently listed for sale and an average price of $23,726.00, 34.1% of 2018 Audi S4 models for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2018 Audi S4 4.67 / 5 stars.
56.3% of 2018 S4 models on CarGurus are accident free.
The 2018 Audi S4 features a 3.0-liter twin-scroll turbocharged V6 engine producing 354 horsepower, paired with an eight-speed automatic transmission, and includes all-wheel drive as standard for enhanced performance.
Why it stands out
The 2018 Audi S4 stands out in the luxury sports sedan market for its combination of power, advanced features, and all-wheel drive capability. Equipped with a robust 3.0-liter turbocharged V6 engine, it delivers an exhilarating performance with 354 horsepower that allows for impressive acceleration. The standard Quattro all-wheel-drive system enhances handling and provides confidence on various road conditions. Inside, the S4 offers a blend of comfort and technology, including Audi's advanced infotainment systems and reconfigurable Virtual Cockpit, providing a driver-focused experience. While it may not be as sporty as some of its BMW or Mercedes-AMG competitors in terms of handling, it excels with a smooth and comfortable ride, making it appealing for both daily driving and spirited weekend outings. The balance of luxury, performance, and innovative features makes the 2018 Audi S4 a compelling choice for buyers seeking a high-performance sedan without sacrificing comfort.
Other model years to consider
- Average price: $44,121.00
- Good/great deal percentage: 38.6%
- Total listings: 145
- Average price: $27,984.00
- Good/great deal percentage: 33.3%
- User rating: 5 / 5
- Total listings: 135
This analysis is based on CarGurus' proprietary market data from May 18, 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: Denver, CO Market Report
Pricing Analysis by Model Year
Key Insights
- Significant Depreciation for Older Models: The 2014 Audi S4 has seen a decline of ~55.3% compared to its original MSRP, indicating steep depreciation typical of older luxury vehicles.
- Best Value with Newer Models: The 2019 Audi S4 shows a relatively modest depreciation at -48.9%, making it a strong consideration for buyers looking for value in recent models.
- High Demand for Newer Models: The 2023 Audi S4 is priced at $42,495, which reflects a premium of about -19.3% vs MSRP, suggesting robust interest in the newest offerings.
Model Year Pricing
| Model Year | Original MSRP | Avg Price | Price vs MSRP |
|---|---|---|---|
| 2023 | $52,800 | $42,495 | -19.3% |
| 2019 | $50,200 | $25,598 | -48.9% |
| 2014 | $48,100 | $21,499 | -55.3% |
| 2012 | $47,300 | $17,495 | -63.1% |
These recommendations are based on CarGurus' proprietary market data from May 14, 2026, CarGurus experts' opinions, and generative AI.
