2007 Audi S4
2007 Audi S4
Overview
The 2007 Audi S4, a performance-oriented variant of the A4, is known for its potent V8 engine and engaging driving dynamics. However, like many high-performance vehicles of its era, it can present specific reliability concerns that owners should be aware of. This analysis focuses on documented issues beyond routine maintenance, highlighting areas that may require attention. The S4’s complexity, particularly its engine and drivetrain, contributes to its unique maintenance profile. While generally a robust car, certain components are more prone to issues than others, impacting long-term ownership costs and driving experience. Understanding these potential pitfalls is crucial for prospective buyers and current owners.
Engine
4.2L V8 (Naturally Aspirated)
Timing Chain Guides and Tensioners
- Symptoms: Rattling noise from the rear of the engine, especially on startup; check engine light.
- Solution: Replacement of timing chains, guides, and tensioners. This is a labor-intensive job.
- Cost: $2500 - $4000
Carbon Buildup
- Symptoms: Reduced engine performance, rough idle, misfires, decreased fuel economy.
- Solution: Intake manifold cleaning, walnut blasting of intake valves.
- Cost: $500 - $1000
Oil Leaks (Valve Cover Gaskets, Oil Cooler Seals)
- Symptoms: Visible oil leaks, burning oil smell, low oil level.
- Solution: Replacement of affected gaskets and seals.
- Cost: $400 - $800
Transmission
6-Speed Manual
Clutch Wear
- Symptoms: Slipping clutch, difficulty shifting gears, burning smell.
- Solution: Clutch kit replacement (clutch disc, pressure plate, release bearing).
- Cost: $1000 - $1800
6-Speed Tiptronic Automatic
Torque Converter Issues
- Symptoms: Shuddering during acceleration, delayed engagement, slipping.
- Solution: Torque converter replacement.
- Cost: $1500 - $2500
Valve Body Problems
- Symptoms: Harsh shifting, transmission fault codes, erratic behavior.
- Solution: Repair or replacement of the valve body.
- Cost: $1000 - $2000
Suspension
Standard Chassis
Control Arm Bushings
- Symptoms: Clunking noises over bumps, vague steering feel, uneven tire wear.
- Solution: Replacement of worn control arm bushings or entire control arms.
- Cost: $400 - $700
Air Suspension (if equipped)
- Symptoms: Vehicle sagging, uneven ride height, compressor failure, air leaks.
- Solution: Repair or replacement of air springs, compressor, or lines.
- Cost: $800 - $1500 per corner
Electrical
General Electrical System
Window Regulator Failure
- Symptoms: Power windows not operating, window falling into the door.
- Solution: Replacement of the window regulator mechanism.
- Cost: $200 - $400
Infotainment System Glitches
- Symptoms: Screen freezing, navigation issues, audio problems.
- Solution: Software updates, head unit repair or replacement.
- Cost: $300 - $1000
Exterior
Body Panels and Trim
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Interior
Cabin Components
No widespread issues reported.
- Symptoms: N/A
- Solution: N/A
- Cost: Varies
Summary Verdict
The 2007 Audi S4 offers exhilarating performance, but its complexity, particularly the V8 engine and available automatic transmission, can lead to significant repair costs. The timing chain system is a notable concern requiring substantial investment if it fails. Carbon buildup is also common on direct-injection engines of this era. While the manual transmission is generally more robust, clutch wear is a typical maintenance item. Electrical gremlins, such as window regulators and infotainment issues, can also arise. Owners should budget for potential repairs, especially concerning the engine and drivetrain, and ensure regular, high-quality maintenance to mitigate these risks. Despite these potential issues, a well-maintained S4 can still provide an engaging driving experience.