2000 Audi S4

The 2000 Audi S4 is a performance sedan known for its turbocharged engine, Quattro all-wheel-drive system, and sporty handling. The sole engine option available was a 2.7-liter twin-turbocharged V6, producing 250 horsepower and 258 lb-ft of torque. Transmission options included a 6-speed manual and a 5-speed automatic. Owners generally praise the S4 for its engaging driving experience and potential for modification. Criticisms often center on the car’s age-related reliability issues and the cost of maintenance and repairs.

Engine

2.7T V6

• Turbocharger Failure
  • Description/Symptoms: Whining noise, loss of power, excessive oil consumption, and potential smoke from the exhaust. The turbos on the 2.7T are prone to failure due to age, heat, and oil starvation.
  • Solution: Replacement of the failed turbocharger(s). It is often recommended to replace both turbos simultaneously to ensure even performance and avoid future issues.
  • Estimated Cost to Fix: $1,500 - $4,000+ (depending on turbo brand and if doing the work DIY).
  • Recalls: None Found
• Timing Belt Failure
  • Description/Symptoms: The 2.7T is an interference engine, meaning that if the timing belt breaks, the valves will collide with the pistons causing catastrophic engine damage. Symptoms of a failing belt include ticking noises or misfires.
  • Solution: Scheduled timing belt replacement every 75,000 - 100,000 miles is critical. The service should include replacing the water pump, tensioner, and idler pulleys.
  • Estimated Cost to Fix: $800 - $1,500 (for the timing belt service). If the belt breaks and damages the engine, the cost can be $3,000+.
  • Recalls: None Found
• Coolant Temperature Sensor (CTS) Failure
  • Description/Symptoms: Incorrect temperature readings, poor fuel economy, difficulty starting, and potential overheating.
  • Solution: Replacement of the CTS.
  • Estimated Cost to Fix: $50 - $200
  • Recalls: None Found

Transmission

6-Speed Manual

• Clutch Failure
  • Description/Symptoms: Slipping clutch, difficulty shifting, and a high engagement point.
  • Solution: Clutch replacement. Consider upgrading to a stronger aftermarket clutch if planning on increasing engine power.
  • Estimated Cost to Fix: $800 - $2,000+
  • Recalls: None Found
• Synchro Wear
  • Description/Symptoms: Grinding or difficulty shifting into specific gears, especially 2nd gear.
  • Solution: Transmission rebuild or replacement.
  • Estimated Cost to Fix: $1,500 - $4,000+
  • Recalls: None Found

5-Speed Automatic

• Valve Body Issues
  • Description/Symptoms: Harsh or delayed shifting, slipping, and potential failure to engage gears.
  • Solution: Valve body replacement or rebuild.
  • Estimated Cost to Fix: $800 - $2,500+
  • Recalls: None Found
• Torque Converter Failure
  • Description/Symptoms: Shuddering at low speeds, poor acceleration, and potential stalling.
  • Solution: Torque converter replacement.
  • Estimated Cost to Fix: $800 - $2,000+
  • Recalls: None Found

Suspension

• Control Arm Bushing Failure
  • Description/Symptoms: Clunking noises, vague steering, and uneven tire wear. The front control arms are particularly susceptible.
  • Solution: Replacement of the control arms or just the bushings.
  • Estimated Cost to Fix: $300 - $1,000+ (depending on the number of control arms replaced)
  • Recalls: None Found
• Strut/Shock Absorber Failure
  • Description/Symptoms: Bouncy ride, poor handling, and excessive body roll.
  • Solution: Replacement of the struts/shocks.
  • Estimated Cost to Fix: $400 - $1,200+
  • Recalls: None Found

Electrical

• Instrument Cluster Pixel Failure
  • Description/Symptoms: Missing or faded pixels on the instrument cluster display, making it difficult to read information.
  • Solution: Instrument cluster repair or replacement. Some repair services specialize in fixing the pixel issue.
  • Estimated Cost to Fix: $100 - $500+
  • Recalls: None Found
• Mass Air Flow (MAF) Sensor Failure
  • Description/Symptoms: Poor engine performance, rough idle, and potential stalling.
  • Solution: MAF sensor replacement.
  • Estimated Cost to Fix: $100 - $300
  • Recalls: None Found

Exterior

• Door Lock Module Failure
  • Description/Symptoms: Doors not locking or unlocking properly with the remote or key.
  • Solution: Door lock module replacement.
  • Estimated Cost to Fix: $200 - $500+
  • Recalls: None Found

Interior

• Sunroof Failure
  • Description/Symptoms: Sunroof not opening or closing properly, getting stuck, or making grinding noises.
  • Solution: Sunroof track repair or replacement.
  • Estimated Cost to Fix: $300 - $800+
  • Recalls: None Found
• Window Regulator Failure
  • Description/Symptoms: Window not going up or down, making grinding noises, or falling into the door.
  • Solution: Window regulator replacement.
  • Estimated Cost to Fix: $200 - $400+
  • Recalls: None Found

Summary

The 2000 Audi S4, while a desirable performance car, is prone to age-related issues, particularly in its engine, transmission, and suspension systems. Turbocharger and timing belt issues are significant concerns due to their potential for costly repairs. Electrical gremlins and interior component failures also contribute to the ownership experience. While some repairs are relatively inexpensive, others can be quite costly, making preventative maintenance and thorough inspections crucial for prospective buyers.