Modern Motorcars

1856 North Deffer Drive, Nixa, MO 65714
4.8
4.8 out of 5 stars

Used 2004 Audi S4 quattro

19,665 miles
For Sale:$18,999
Estimated payment:$431/mo.
$0 trade-in, 10% down payment, 48 months, Great credit score

Value ChartA visual chart indicating the fair price range is between $8,100 and $9,500, while the current price is $18,999.$8,100 - $9,500$18,999
  • Priced at $18,999, this vehicle is $9,499 above the high end of its fair market value of $9,500.

  • The current fair market price range is between $8,100 to $9,500.

  • It has 19,665 miles, which is 100,135 (84%) below the median mileage of 119,800.

Note: This is an estimate based on a variety of factors (experimental feature). It is intended to provide a fair market value range to help guide your buying decision.

View Full Value Report
  • Car
  • Convertible
  • Luxury
  • Condition
    Used
  • Mileage
    19,665miles
  • Aggregate Ratings
    2.8
    2.8 out of 5 stars
  • Generation
    3(2003 - 2005)
  • Trim
    quattro
  • Drivetrain
    All Wheel
  • Upholstery
    Leather
  • Doors
    2
  • Max Seating
    4
  • Acceleration (0-60 mph)
    5.75seconds
  • Max Towing Capacity
    0lbs.
  • Ground Clearance
    5inch
  • Final Assembly Point
    Osnabrueck, Germany
  • VIN
    WUARL48HX4K900482
  • Starting MSRP
    $54,570

Engine4.2L V8 Gasoline 340hp

  • Fuel Type:Gasoline
  • Max Horsepower:340 hp @ 7000 rpm
  • Power to Weight Ratio:12.03lbs/hp
  • Max Torque:302 ft.lbf @ 3500 rpm
  • Displacement:4.2liters
  • Block Type:V
  • Cylinders:8
  • Aspiration:Naturally Aspirated
  • Fuel Induction:Fuel Injection
  • Cam Type:DOHC
  • Valves:40

Message from the seller

$53,850 MSRP, 2004 Audi S4 quattro, Convertible Top, AWD, 4.2L V8, 6 Speed Automatic Transmission, Power Adjustable Seats, Back Up Camera.

  • Comfort & Seating:

    • Power Seats
  • Convenience:

    • Automatic Climate Control
  • Entertainment:

    • Premium Audio
  • Exterior:

    • Heated Mirrors

  • LEV:

    • Air Pollution Score:2
    • Greenhouse Gas Score:5
    • Fuel Type:Gasoline
    • Epa Underhood Id:4ADXV04.2345
  • LEV:

    • Air Pollution Score:2
    • Greenhouse Gas Score:4
    • Fuel Type:Gasoline
    • Epa Underhood Id:4ADXV04.2345

The 2004 Audi S4: A German Performance Sedan Defined

The 2004 Audi S4 stands as a testament to Audi's ability to blend luxury, performance, and sophisticated engineering. Building on the B6 platform, this iteration of the S4 marked a significant step up in power and driving dynamics, cementing its reputation as a formidable contender in the premium performance sedan segment. For enthusiasts seeking a potent and refined German machine with a healthy dose of practicality, the 2004 S4 offers a compelling package.

Highlights

  • Engine: The heart of the 2004 S4 is its legendary 4.2-liter V8 engine. This naturally aspirated powerhouse delivers a thrilling 340 horsepower and 302 lb-ft of torque. Paired with Audi's renowned quattro all-wheel-drive system, this engine provides exhilarating acceleration and exceptional grip in all driving conditions, making it a joy on winding roads and a confident performer in inclement weather.
  • Safety Features: Audi equipped the 2004 S4 with a comprehensive suite of safety technologies for its era:
    • Antilock Braking System (ABS): Prevents wheel lock-up during hard braking, allowing the driver to maintain steering control.
    • Electronic Stability Control (ESC) / Program (ESP): Helps prevent skidding and loss of control by applying individual brakes and reducing engine power when it detects a deviation from the intended path.
    • Traction Control System (TCS): Reduces wheel spin during acceleration, improving grip and stability.
    • Front and Side Airbags: Provide crucial protection for occupants in the event of a collision.
    • Daytime Running Lights: Enhance visibility to other road users, increasing safety.
  • Trims: The 2004 Audi S4 was primarily offered in two distinct body styles, each catering to different needs while sharing the same potent powertrain:
    • S4 Sedan: The quintessential performance sedan, offering four doors and a comfortable, albeit sporty, cabin.
    • S4 Avant: The practical yet potent wagon variant, providing increased cargo space and versatility without compromising on the S4's exhilarating performance.
  • Other Notable Aspects:
    • quattro All-Wheel Drive: A standard and defining feature, quattro ensures tenacious grip and balanced handling, making the S4 incredibly competent in a variety of driving scenarios.
    • Sport-Tuned Suspension: The S4 features a firmer suspension setup compared to its A4 counterpart, contributing to sharper handling and reduced body roll during spirited driving.
    • Luxurious Interior: The cabin is appointed with high-quality materials, supportive sport seats, and an overall upscale ambiance that reflects Audi's commitment to luxury.
    • Manual Transmission Option: For purists, the availability of a six-speed manual transmission adds another layer of driver engagement, allowing for more direct control over the V8's power delivery.

What to Expect

Owning a 2004 Audi S4 is an experience for those who appreciate a blend of everyday usability and spirited performance. The V8 engine provides a satisfying soundtrack and effortless power, making commutes and longer journeys enjoyable. The quattro system instills confidence, particularly in adverse weather conditions.

However, as a performance vehicle with a sophisticated V8 engine, maintenance is a crucial aspect of ownership. Expect maintenance costs to be higher than that of a typical sedan. Regular oil changes with the correct specification oil are essential. The timing chain system, while generally robust, can be a significant expense to address if issues arise, so understanding its service history is important. Expect to budget for more frequent tire replacements due to the S4's performance-oriented nature and the demands of the quattro system.

Insurance costs for the 2004 S4 can also be higher than average, reflecting its performance capabilities and the cost of parts and repairs. It's advisable to obtain insurance quotes before purchasing to understand these potential expenses.

Potential Considerations

While the 2004 Audi S4 is a highly desirable vehicle, potential buyers should be aware of a few common considerations:

  • Carbon Buildup: Like many naturally aspirated V8 engines of this era, the 4.2-liter V8 can be prone to carbon buildup on the intake valves. This can manifest as rough idling, misfires, and a loss of power. Regular maintenance and sometimes specialized cleaning procedures are needed to mitigate this.
  • Coil Pack Failures: Ignition coil packs can be a wear item and may require replacement over time, leading to misfires and performance issues.
  • PCV (Positive Crankcase Ventilation) System: The PCV system can become clogged, leading to various engine performance issues and potential oil leaks.
  • Electronic Gremlins: While not as prevalent as in some other German luxury cars of the period, occasional minor electrical issues can arise, as is common with complex automotive electronics.
  • Wear on Suspension Components: Given the car's performance intent and age, suspension components like bushings and ball joints may exhibit wear, impacting ride quality and handling.

Overall Summary

The 2004 Audi S4 is a compelling choice for those seeking a sophisticated and potent German performance sedan or wagon. Its glorious V8 engine, standard quattro all-wheel drive, and luxurious interior offer a driving experience that balances everyday comfort with exhilarating capability. While it demands diligent maintenance and can present some age-related considerations, for those willing to invest in its upkeep, the 2004 S4 remains a rewarding and engaging vehicle that continues to hold its appeal among automotive enthusiasts.

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Listed on March 11, 2026 (a month ago)
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