Used 2018 Audi S4 for Sale near Chicago, IL
34 results
CarGurus Analysis:
2018 Audi S4
With 136 currently listed for sale and an average price of $24,003.00, 30.1% 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.
61.8% of 2018 Audi S4 models on CarGurus are accident free.
The 2018 Audi S4 is powered by a 3.0-liter twin-scroll turbocharged V6 engine producing 354 horsepower, offering a thrilling performance alongside luxurious interior features.
CarGurus Analysis: 2018 Audi S4
Summary
With 136 currently listed for sale and an average price of $24,003.00, 30.1% 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.
61.8% of 2018 Audi S4 models on CarGurus are accident free.
The 2018 Audi S4 is powered by a 3.0-liter twin-scroll turbocharged V6 engine producing 354 horsepower, offering a thrilling performance alongside luxurious interior features.
Why it stands out
The 2018 Audi S4 continues the tradition of providing a performance-oriented driving experience while maintaining luxurious comforts. Its strong twin-scroll turbocharged V6 engine delivers impressive acceleration (0-60 mph in 4.4 seconds) combined with the practicality of all-wheel drive, standard on all models. The S4 is designed for those who appreciate a blend of sportiness and everyday usability, making it a solid choice for both commuting and spirited drives. Moreover, the vehicle's lack of a V8 engine in favor of a more efficient and reliable V6 contributes to lower maintenance costs, exemplifying a balance between performance and practicality. Enhanced with sophisticated technology such as a reconfigurable Virtual Cockpit and optional adaptive cruise control, the 2018 Audi S4 is an appealing option for buyers looking for a compact luxury sports sedan with a great mix of comfort, performance, and modern features.
Other model years to consider
- Average price: $28,252.00
- Good/great deal percentage: 31.1%
- User rating: 5 / 5
- Total listings: 148
- Average price: $44,008.00
- Good/great deal percentage: 33.8%
- Total listings: 136
This analysis is based on CarGurus' proprietary market data from May 4, 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: Chicago, IL Market Report
Pricing by Nearby Locations
Market Area: Chicago, IL
Key Insights
- Top Prices in Milwaukee: The market in Milwaukee, WI ($24,832) has the highest average price, likely indicating a premium demand for the S4 or limited inventory.
- Lowest Prices in South Bend: South Bend, IN ($22,234) offers the lowest average pricing, suggesting it may be a more price-sensitive market with adequate supply.
- Uniform Pricing in Nearby Cities: Cities like Palatine ($23,416) and Aurora ($23,416) display similar average prices, indicating consistent demand and pricing in the vicinity.
City-Level Pricing
| City | Total Listings | Avg Price |
|---|---|---|
| Milwaukee, WI | 29 | $24,832 |
| Palatine, IL | 33 | $23,416 |
| Aurora, IL | 33 | $23,416 |
| Kenosha, WI | 32 | $22,422 |
| South Bend, IN | 27 | $22,234 |
| Kalamazoo, MI | 31 | $22,234 |
Pricing Analysis by Model Year
Key Insights
- New Model Premium: The 2024 Audi S4 is priced at $55,935, which is approximately 2.5% above its MSRP, signaling strong demand for the latest model year.
- Significant Depreciation in Older Models: Models like the 2012 Audi S4 have seen substantial depreciation with an average price around $9,995, reflecting almost 79% depreciation from its original MSRP.
- 2021 and 2020 Models Offer Competitive Pricing: The 2021 Audi S4 is currently priced at $34,759, yielding a depreciation of approximately 30.7%, while the 2020 model at $27,389 offers a similar trend.
Model Year Pricing
| Model Year | Original MSRP | Avg Price | Price vs MSRP |
|---|---|---|---|
| 2024 | $54,500 | $55,935 | +2.6% |
| 2023 | $52,800 | $44,585 | -15.6% |
| 2021 | $49,900 | $34,759 | -30.7% |
| 2020 | $49,900 | $27,389 | -45.0% |
| 2019 | $50,200 | $30,400 | -39.5% |
| 2012 | $47,300 | $9,995 | -78.9% |
These recommendations are based on CarGurus' proprietary market data from May 14, 2026, CarGurus experts' opinions, and generative AI.
