Used 2019 Audi S4 for Sale nearNew York, NY
Shop with transparent pricing.
Only show listings that include dealer fees- Year:
- 2020
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Quantum Gray
- Combined gas mileage:
- 23 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 60,796
- Stock #:
- A1265M
- VIN:
- WAUC4AF40LA044979
Sponsored by Teddy Volkswagen
2020 Audi S4
3.0T quattro Prestige Sedan AWD
60,796 mi
$32,795
- 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:
- 72,152
- Stock #:
- HP902223A
- VIN:
- WAUB4AF45JA003935
Sponsored Listing
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
72,152 mi
$26,007
- 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:
- 66,999
- Stock #:
- 1076A
- VIN:
- WAUB4AF43KA029189
Sponsored Listing
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
66,999 mi
$27,730
- 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:
- 66,999
- Stock #:
- 1076A
- VIN:
- WAUB4AF43KA029189
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
66,999 mi
$27,730
- Year:
- 2020
- 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:
- 23 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 31,479
- Stock #:
- 39062
- VIN:
- WAUB4AF45LA039062
2020 Audi S4
3.0T quattro Premium Plus Sedan AWD
31,479 mi
$31,822
- 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:
- Red
- Transmission:
- 8-Speed Automatic
- Mileage:
- 83,706
- Stock #:
- 1081P
- VIN:
- WAUC4AF42JA002794
2018 Audi S4
3.0T quattro Prestige Sedan AWD
83,706 mi
$25,173
- Year:
- 2020
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Mythos Black Metallic
- Combined gas mileage:
- 23 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 75,134
- Stock #:
- 041064
- VIN:
- WAUB4AF48LA041064
-$2,200
2020 Audi S4
3.0T quattro Premium Plus Sedan AWD
75,134 mi
$29,664
$27,464
- Year:
- 2020
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Quantum Gray
- Combined gas mileage:
- 23 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 60,796
- Stock #:
- A1265M
- VIN:
- WAUC4AF40LA044979
2020 Audi S4
3.0T quattro Prestige Sedan AWD
60,796 mi
$32,795
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Blue
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Gray
- Transmission:
- 8-Speed Automatic
- Mileage:
- 75,414
- Stock #:
- 042946
- VIN:
- WAUA4AF40KA042946
2019 Audi S4
3.0T quattro Premium Sedan AWD
75,414 mi
$24,884
- Year:
- 2018
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 354 hp 3L V6
- Exterior color:
- White
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 115,282
- Stock #:
- 224497
- VIN:
- WAUB4AF45JA224497
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
115,282 mi
$18,499
- 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:
- Automatic
- Mileage:
- 67,317
- Stock #:
- C4932
- VIN:
- WAUC4AF49KA016855
2019 Audi S4
3.0T quattro Prestige Sedan AWD
67,317 mi
$30,399
- 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:
- 72,152
- Stock #:
- HP902223A
- VIN:
- WAUB4AF45JA003935
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
72,152 mi
$26,007
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Daytona Gray Pearl Effect
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 79,253
- Stock #:
- M22198
- VIN:
- WAUC4AF46KA109588
2019 Audi S4
3.0T quattro Prestige Sedan AWD
79,253 mi
$29,194
CarGurus Analysis:
2019 Audi S4
With 159 currently listed for sale and an average price of $30,034, 35.8% of 2019 Audi S4s for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2019 Audi S4 5 / 5 stars.
73.6% of 2019 Audi S4 models on CarGurus are accident free.
- 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:
- Green
- Transmission:
- 8-Speed Automatic
- Mileage:
- 23,327
- Stock #:
- 1Y233356
- VIN:
- WAUB4AF4XJA233356
2018 Audi S4
3.0T quattro Premium Plus Sedan AWD
23,327 mi
$32,004
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Brilliant Black
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 71,454
- Stock #:
- 004697
- VIN:
- WAUA4AF42KA004697
2019 Audi S4
3.0T quattro Premium Sedan AWD
71,454 mi
$26,551
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Orange (Tango Red)
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 39,113
- Stock #:
- 1042W
- VIN:
- WAUB4AF49KA001042
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
39,113 mi
$34,058
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Blue
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Gray
- Transmission:
- Automatic
- Mileage:
- 70,949
- Stock #:
- 13840YA
- VIN:
- WAUA4AF4XKA032554
-$1,000
2019 Audi S4
3.0T quattro Premium Sedan AWD
70,949 mi
$27,780
$26,780
- 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:
- Red
- Transmission:
- 8-Speed Automatic
- Mileage:
- 83,982
- Stock #:
- 1338
- VIN:
- WAUB4AF45KA080404
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
83,982 mi
$27,294
- Year:
- 2020
- 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:
- 23 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 71,965
- Stock #:
- CU7642
- VIN:
- WAUB4AF43LA027430
2020 Audi S4
3.0T quattro Premium Plus Sedan AWD
71,965 mi
$30,007
- Year:
- 2018
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 354 hp 3L V6
- Exterior color:
- Orange (Tango Red Metallic)
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 54,018
- Stock #:
- 36153
- VIN:
- WAUC4AF47JA204806
2018 Audi S4
3.0T quattro Prestige Sedan AWD
54,018 mi
$30,415
- Year:
- 2019
- Make:
- Audi
- Model:
- S4
- Body type:
- Sedan
- Doors:
- 4 doors
- Drivetrain:
- All-Wheel Drive
- Engine:
- 349 hp 3L V6
- Exterior color:
- Blue
- Combined gas mileage:
- 25 MPG
- Fuel type:
- Gasoline
- Interior color:
- Black
- Transmission:
- 8-Speed Automatic
- Mileage:
- 105,781
- Stock #:
- 095352
- VIN:
- WAUB4AF4XKA095352
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
105,781 mi
$22,576
- 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
- Interior color:
- Black
- Transmission:
- Automatic
- Mileage:
- 53,991
- Stock #:
- 70162642
- VIN:
- WAUC4BF47JA202754
2018 Audi S4
3.0T quattro Prestige Sedan AWD
53,991 mi
$32,147
- 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:
- Red
- Transmission:
- 8-Speed Automatic
- Mileage:
- 83,982
- Stock #:
- 1338
- VIN:
- WAUB4AF45KA080404
Sponsored Listing
2019 Audi S4
3.0T quattro Premium Plus Sedan AWD
83,982 mi
$27,294
CarGurus Analysis: 2019 Audi S4
Summary
With 159 currently listed for sale and an average price of $30,034, 35.8% of 2019 Audi S4s for sale on CarGurus are rated as good or great deals.
Favorably reviewed: Owners rated the 2019 Audi S4 5 / 5 stars.
73.6% of 2019 Audi S4 models on CarGurus are accident free.
Why it stands out
The 2019 Audi S4 stands out as a performance sedan that blends strong straight-line speed with everyday refinement. It uses a 3.0-liter twin-scroll turbocharged V6 producing 354 ponies and 369 pound-feet of torque, paired with an eight-speed automatic transmission and standard all-wheel drive. Audi says that setup is good for a zero-to-60-mph time of 4.4 seconds, and the car also rides very smoothly for a performance sedan. It is not as athletic a handler as cars like the BMW M340i or Mercedes-AMG C43, but it still delivers plenty of thrust and remains fun to drive.
The 2019 model also brings a well-equipped cabin and useful technology. Audi’s Virtual Cockpit is part of the package, along with Google navigation, Apple CarPlay, Android Auto, low-speed forward-collision warning, and emergency braking. A new base Premium trim joined the lineup for 2019, though adaptive cruise control still cost extra, so not every used example will have it. That makes the 2019 Audi S4 appealing to buyers who want a fast, upscale sedan with a strong feature set and standard all-wheel drive.
There are a few tradeoffs to keep in mind. The S4 is not the most exciting vehicle in its class, and Audi’s reliability is rated below average by RepairPal. It also depreciates quickly, which can make it a better used-car value than a new-car proposition.
Other model years to consider
- Average price: $23,939
- Good/great deal percentage: 35.7%
- User rating: 4.67 / 5
- Total listings: 140
- Average price: $42,267
- Good/great deal percentage: 28.4%
- 83.5% of 2023 Audi S4 models on CarGurus are accident free.
- Total listings: 109
This analysis is based on CarGurus' proprietary market data from September 7, 2026, CarGurus experts' opinions, and generative AI.
*CarGurus meticulously monitors the prices of millions of pre-owned vehicle listings, offering users precise and up-to-date market insights. Historical pricing data excludes any additional dealer fees as of May 3, 2026.
5.0 Overall rating
Filter by rating
Daniel M
Reviewed a 2019 Audi S4 on Apr 17, 2023
Car is amazing. Fully loaded. More then I expected.
Michael L
Reviewed a 2019 Audi S4 on Mar 22, 2020
Great car. Extremely comfortable and plenty of room. Gives you both in terms of performance and everyday road car. Lots of technology with the Audi MMI interface. Difficult to adapt to but once you do the controls and layout do work well. The design and functionality of the car is excellent. Would highly recommend.
2019 Audi S4 Trims
*CarGurus meticulously monitors the prices of millions of pre-owned vehicle listings, offering users precise and up-to-date market insights. Historical pricing data excludes any additional dealer fees as of May 3, 2026.
2019 Audi S4 Price Trends
CarGurus tracks the prices of millions of used car listings every year. See how the average price of 2019 Audi S4 prices has changed over time.
See more price trends2019 Audi S4 Pricing Analysis
Pricing by Popular US Cities
Market Area: Nationwide
Key Insights
- Highest Prices in New York: The New York, NY market commands the highest average price at $33,770, likely due to higher demand and limited supply in urban areas.
- Lowest Prices in Houston: Conversely, Houston, TX offers the lowest average price at $26,995, indicating a more price-sensitive market with potentially higher inventory.
- Inventory Variation: Cities like Philadelphia (48 listings) and Boston (43 listings) show a healthy inventory, correlating with stable pricing around $29,000.
City-Level Pricing
| City | Total Listings | Avg Price |
|---|---|---|
| New York, NY | 49 | $33,770 |
| Los Angeles, CA | 25 | $31,486 |
| Chicago, IL | 34 | $29,768 |
| Dallas, TX | 27 | $30,247 |
| Philadelphia, PA | 48 | $29,343 |
| Houston, TX | 30 | $26,995 |
| Atlanta, GA | 31 | $27,997 |
| Boston, MA | 43 | $29,453 |
Pricing by Trim Packages
Key Insights
- Most Common Trim: The 3.0T quattro Premium Plus Sedan AWD is the most prevalent trim with 221 listings, indicating strong demand for this configuration.
- Price Range Across Trims: The 3.0T quattro Prestige Sedan AWD has the highest MSRP at $57,800, reflecting its premium features and positioning in the market.
- AWD Popularity: All trims feature AWD, which is likely a significant factor in their appeal, especially in regions with varying weather conditions.
Trim-Level Details
| Trim | Listings | MSRP | Drivetrain | Engine |
|---|---|---|---|---|
| 3.0T quattro Premium Plus Sedan AWD | 221 | $54,500 | AWD | 3.0L 349 hp V6 |
| 3.0T quattro Prestige Sedan AWD | 59 | $57,800 | AWD | 3.0L 349 hp V6 |
| 3.0T quattro Premium Sedan AWD | 9 | $50,200 | AWD | 3.0L 349 hp V6 |
Pricing Analysis by Model Year
Key Insights
- Strong Demand for Newer Models: The 2024 Audi S4 is currently priced at $45,204, which is approximately 17.9% below its MSRP, indicating a strong market for newer models.
- Significant Depreciation for Older Models: The 2012 Audi S4 shows the steepest depreciation, with an average price of $11,799, reflecting a decline of -75.1% from its original MSRP.
- Best Value Years: The 2021 Audi S4 offers a balance of price and features, priced at $34,234, which is -31.5% compared to its original MSRP, making it a potentially attractive option for buyers.
Model Year Pricing
| Model Year | Original MSRP | Avg Price | Price vs MSRP |
|---|---|---|---|
| 2024 | $54,500 | $45,204 | -17.9% |
| 2023 | $52,800 | $41,725 | -21.0% |
| 2022 | $51,900 | $37,840 | -27.0% |
| 2021 | $49,900 | $34,234 | -31.5% |
| 2020 | $49,900 | $31,256 | -37.4% |
| 2018 | $51,400 | $24,942 | -51.5% |
| 2016 | $49,200 | $18,942 | -61.5% |
| 2015 | $48,400 | $18,769 | -61.2% |
| 2014 | $48,100 | $17,549 | -63.5% |
| 2013 | $47,600 | $15,131 | -68.3% |
| 2012 | $47,300 | $11,799 | -75.1% |
These recommendations are based on CarGurus' proprietary market data from September 3, 2026, CarGurus experts' opinions, and generative AI.
*CarGurus meticulously monitors the prices of millions of pre-owned vehicle listings, offering users precise and up-to-date market insights. Historical pricing data excludes any additional dealer fees as of May 3, 2026.
Is the 2019 Audi S4 a good car?
Yes — the 5/5 user rating points to strong shopper satisfaction, and the 2019 Audi S4 fits buyers who want quick, confident everyday transportation with a polished cabin and standard all-wheel drive. The overview also highlights strong acceleration, a smooth ride for a performance sedan, and a refined, understated personality that may appeal if you value speed without a flashy look. For shoppers who want a compact luxury sedan with useful tech and all-weather confidence, it lands in a very appealing spot. With 36.3% of listings marked as good or great deals, there is still some room to shop selectively.
Is the 2019 Audi S4 reliable?
Owners rate it 5/5, a strong signal of long-term satisfaction. The overview describes reliability as decent for these years, while also noting that Audis typically require more maintenance than rival brands and that the S4 is below average for reliability. For used buyers, that means the car can make sense if you stay on top of upkeep, but long-term ownership risk is higher than you might expect from some mainstream alternatives.
What should I look for when buying a used 2019 Audi S4?
At 73.2% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
You should start with a vehicle history report and confirm whether any prior damage was cosmetic or structural. Put inspection priority on body condition, panel alignment, and signs of inconsistent repairs, then make sure the car drives cleanly and feels tight over bumps and during hard acceleration. Because this model is a performance sedan with premium features, you should also focus on overall condition and maintenance quality rather than just mileage alone.
Is now a good time to buy a used 2019 Audi S4?
This looks like a moderate, selective buyer’s market, so you can shop patiently and still find worthwhile listings.
- Deal availability: 36.3% of listings are priced as good or great deals.
- Inventory: There are 168 listings available.
- Clean inventory: 73.2% of listings are accident-free.
If you find a listing below $27,281.17, that's toward the low end of the year-round range and worth acting on quickly.
Should I buy a 2019 Audi S4 or consider a different year?
If you're weighing the 2019 against nearby model years, here's how to think about it:
Choose the 2019 if:
- 36.3% of listings are priced as good or great deals.
- At 73.2% accident-free, a meaningful share of listings has prior incidents — history verification is especially important.
- Owners rate it 5/5 — a strong satisfaction signal.
The bottom line: The 2019 Audi S4 is a strong choice if you want a quick, refined luxury sedan with standard all-wheel drive and a polished cabin. If you are price-sensitive, you may want to compare nearby years and focus on the cleanest, best-maintained example rather than chasing the newest badge alone.
These recommendations are based on CarGurus' proprietary market data from September 4, 2026, CarGurus experts' opinions, and generative AI.
*CarGurus meticulously monitors the prices of millions of pre-owned vehicle listings, offering users precise and up-to-date market insights. Historical pricing data excludes any additional dealer fees as of May 3, 2026.
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.
