2004 Audi S4 V8: Performance & Specs

The 2004 Audi S4 V8 represents a high point in performance sedan engineering, offering a potent combination of a naturally aspirated V8 engine and Audi's renowned Quattro all-wheel-drive system. If you're considering this iconic vehicle, understanding its key features, performance metrics, and potential ownership considerations is crucial.

This guide provides an in-depth look at the 2004 Audi S4 V8, covering its engine, performance, interior, technology, and what to expect if you're looking to buy or maintain one. Our analysis aims to equip you with the knowledge to make an informed decision.

Unleashing the Power: The 4.2L V8 Engine

The heart of the 2004 Audi S4 V8 is its 4.2-liter, 32-valve V8 engine. This powerhouse is a significant upgrade from the V6 found in previous S4 generations. It was engineered to deliver exhilarating performance and a distinctive engine note.

Engine Specifications and Output

The naturally aspirated V8 produces a robust 340 horsepower and 302 lb-ft of torque. This substantial power output allows the S4 to achieve impressive acceleration figures, making it a thrilling car to drive both on the street and on the track. The engine's design emphasizes smooth power delivery across the rev range. — How Many Days Until May? Countdown To Spring!

Engine Variations: FSI vs. Non-FSI

It's important to note that the 2004 model year might feature both early and later versions of the 4.2L V8. While the core specifications remained similar, there were subtle internal revisions over the years that could affect long-term maintenance and performance characteristics. Understanding the specific engine code of a vehicle you're considering is advisable.

Common Engine Concerns and Maintenance

Like many high-performance engines, the 4.2L V8 in the 2004 Audi S4 requires diligent maintenance. Common areas of concern can include timing chain guides, valve cover gaskets, and the PCV system. Regular oil changes with the correct specification oil are paramount to engine longevity. Our experience shows that addressing minor oil leaks promptly can prevent more significant issues down the line.

Driving Dynamics: Quattro and Suspension

Audi's Quattro all-wheel-drive system is a hallmark of the S4, providing exceptional grip and stability in various driving conditions. Combined with a sport-tuned suspension, the 2004 S4 offers a compelling blend of comfort and sporty handling.

The Quattro Advantage

Quattro distributes power to all four wheels, enhancing traction during acceleration, braking, and cornering. This system is particularly beneficial in adverse weather, giving drivers greater confidence and control. It allows the S4 to put its V8 power down effectively without excessive wheelspin.

Suspension System

The S4 features a multi-link front suspension and a trapezoidal-link rear suspension. This sophisticated setup is designed to provide precise handling and a stable ride. However, the sport-tuned nature means it can feel firmer than a standard A4. Over time, suspension components like control arms and bushings can wear, impacting handling and ride quality.

Braking Performance

To match its performance capabilities, the 2004 Audi S4 is equipped with substantial brakes. Front brakes typically feature larger rotors and multi-piston calipers, providing strong and consistent stopping power. Regular inspection and maintenance of the braking system are essential for safety.

Interior and Technology: A Premium Experience

The interior of the 2004 Audi S4 offers a premium feel, reflecting its status as a performance luxury sedan. High-quality materials, comfortable seating, and a driver-focused cockpit are standard.

Cabin Materials and Design

Expect to find Alcantara or leather sport seats, brushed aluminum or carbon fiber trim accents, and a generally well-assembled interior. The ergonomics are typically excellent, with controls placed within easy reach of the driver. The cabin aims to balance sportiness with everyday comfort.

Infotainment and Features

In 2004, the S4 offered a sophisticated infotainment system for its time, often including a premium sound system, navigation (optional), and multi-zone climate control. While the technology might seem dated by today's standards, it was cutting-edge for the era and remains functional for most basic needs.

Practicality: Seating and Cargo Space

While the S4 is a performance car, it doesn't completely sacrifice practicality. It offers seating for five, though the rear middle seat is best suited for shorter journeys. The trunk provides a reasonable amount of cargo space for a sedan of its class, sufficient for groceries or luggage.

Model Variations: Sedan vs. Avant (Wagon)

The 2004 Audi S4 was available in both sedan and Avant (wagon) body styles. Both offer the same V8 performance and Quattro system, but the Avant provides increased cargo capacity and a different aesthetic.

Sedan

The four-door sedan is the more common body style. It offers a classic sporty sedan profile and the full S4 performance package.

Avant (Wagon)

The S4 Avant appeals to those who need more utility without compromising performance. It shares the same potent V8 engine and all-wheel-drive system as the sedan but adds a significant amount of versatile cargo space.

Performance Metrics: Acceleration and Top Speed

The 2004 Audi S4 V8 was renowned for its strong performance figures, allowing it to compete with other sports sedans of its era. — Carbondale, IL Weather: Current Conditions & Forecast

0-60 MPH Times

When new, the 2004 S4 could typically accelerate from 0 to 60 mph in the low to mid 5-second range. This impressive acceleration is a testament to the V8 engine's output and the effective power delivery of the Quattro system.

Top Speed

The electronically limited top speed for the 2004 S4 is usually around 155 mph. However, without the limiter, the car is capable of higher speeds, though this is generally not recommended for street driving.

Ownership Considerations: Maintenance and Reliability

Owning a performance car like the 2004 Audi S4 V8 comes with specific considerations, particularly regarding maintenance costs and potential reliability issues.

Maintenance Costs

Due to its complex V8 engine and performance-oriented components, maintenance for the 2004 S4 can be more expensive than for a standard Audi model. Specialized tools and knowledge are often required, particularly for engine and drivetrain work. This is why finding a mechanic experienced with these specific Audi models is highly recommended.

Reliability Factors

While generally well-built, the 2004 S4, like any aging performance vehicle, can be prone to certain issues. As mentioned, timing chains and guides are a known potential concern. The electronics and various sensors can also present challenges as the car ages. A thorough pre-purchase inspection by a qualified mechanic is essential.

Parts Availability

For a car of this age, parts availability can sometimes be a concern. While many common wear items are still readily available, specialized components might require sourcing from specialized Audi parts suppliers or even the used market. Researching parts availability for your specific region is a good idea.

Frequently Asked Questions (FAQ)

Q1: What is the main difference between the 2004 Audi S4 V8 and the A4?

The primary difference lies in the engine and performance components. The S4 features a 4.2L V8 engine producing 340 hp, Quattro all-wheel drive, sport suspension, and upgraded brakes, whereas the A4 typically came with a smaller 4-cylinder or V6 engine and a less performance-oriented setup.

Q2: Is the 2004 Audi S4 V8 a reliable car?

When properly maintained, the 2004 S4 can be reliable. However, it is a performance vehicle with a complex V8 engine. Potential issues include timing chain guides and other age-related component wear. Regular, expert maintenance is key to its longevity. Our analysis suggests that vehicles with a documented maintenance history tend to be more dependable.

Q3: What kind of fuel does the 2004 Audi S4 V8 require?

This V8 engine requires premium unleaded gasoline (91 octane or higher) to perform optimally and prevent knocking or engine damage. Using lower octane fuel is not recommended.

Q4: Are parts for the 2004 Audi S4 V8 easy to find?

Many common parts are still available, but specialized components for the V8 engine or performance drivetrain might require more effort to source. It’s advisable to check with Audi dealerships or specialized European auto parts retailers.

Q5: What is the typical fuel economy for the 2004 Audi S4 V8?

Fuel economy is not a strong suit of this V8 performance sedan. Expect combined EPA estimates to be in the range of 13-15 MPG, with city driving being significantly lower. Real-world mileage will vary based on driving style and conditions.

Q6: What are the common performance modifications for the 2004 Audi S4 V8?

Popular modifications include ECU tuning for more power, exhaust system upgrades for improved sound and flow, and suspension enhancements like coilovers or sway bars for better handling. Intake upgrades are also common. It's important to research reputable tuning companies and ensure modifications are compatible.

Q7: Should I buy a 2004 Audi S4 V8 today?

If you are an enthusiast who appreciates V8 power, Quattro handling, and a well-built performance sedan, and you have the budget for potentially higher maintenance costs, then yes. However, if you prioritize fuel efficiency, low running costs, and cutting-edge technology, this might not be the best choice. A thorough pre-purchase inspection is critical. — 1965 Pontiac Grand Prix: Classic Car Deep Dive

Conclusion: A Modern Classic for the Enthusiast

The 2004 Audi S4 V8 stands as a testament to Audi's engineering prowess during the early 2000s. Its charismatic V8 engine, sophisticated Quattro all-wheel-drive, and premium interior create a driving experience that still resonates with enthusiasts today. While ownership requires a commitment to diligent maintenance and a realistic expectation of running costs, the rewards are significant for those who appreciate its blend of performance and luxury.

If you're drawn to the raw power and engaging dynamics of a naturally aspirated V8, the 2004 S4 is a compelling option. Conduct thorough research, seek out well-maintained examples, and always prioritize a comprehensive inspection before making your purchase. Explore enthusiast forums and Audi specialist resources to gain further insights into this iconic performance sedan.