2010 Audi S4

Here’s a breakdown of common issues and complaints associated with the 2010 Audi S4, organized by category and component, adhering to your specified format.

The 2010 Audi S4 is a performance-oriented sedan known for its supercharged V6 engine, standard Quattro all-wheel drive, and engaging driving experience. The sole engine option is a 3.0-liter Supercharged V6, producing 333 horsepower and 325 lb-ft of torque. Transmission options included a 6-speed manual and a 7-speed S-tronic dual-clutch automatic. Owners generally praise the S4’s blend of performance, luxury, and practicality. However, some common complaints include higher maintenance costs compared to other vehicles in its class and potential reliability issues as the car ages.

Engine

3.0L Supercharged V6

• Timing Chain Tensioner Failure
  • Description/Symptoms: A rattling noise upon cold start-up, especially noticeable for a few seconds. In severe cases, potential engine damage can occur due to timing chain slippage.
  • Solution: Replacing the timing chain tensioners and potentially the timing chain itself.
  • Estimated Cost to Fix: $2,000 - $4,000+
  • Recalls: None Found
• PCV (Positive Crankcase Ventilation) Valve Failure
  • Description/Symptoms: Rough idle, oil leaks, increased oil consumption, and potential check engine light illumination.
  • Solution: Replacing the PCV valve assembly.
  • Estimated Cost to Fix: $500 - $1,000
  • Recalls: None Found
• Water Pump Failure
  • Description/Symptoms: Overheating, coolant leaks, and potential damage to other engine components.
  • Solution: Replacing the water pump and thermostat.
  • Estimated Cost to Fix: $800 - $1,500
  • Recalls: None Found

Transmission

6-Speed Manual Transmission

• Clutch Failure
  • Description/Symptoms: Clutch slippage, difficulty shifting, and a burning smell. This is a wear and tear item, but can occur prematurely.
  • Solution: Replacing the clutch disc, pressure plate, and throw-out bearing. Consider replacing the flywheel as well.
  • Estimated Cost to Fix: $1,500 - $2,500+
  • Recalls: None Found

7-Speed S-Tronic Dual-Clutch Transmission

• Mechatronic Unit Failure
  • Description/Symptoms: Harsh or erratic shifting, delayed engagement, and potential error messages on the dashboard.
  • Solution: Replacing or repairing the mechatronic unit.
  • Estimated Cost to Fix: $2,500 - $5,000+
  • Recalls: None Found

Suspension

• Control Arm Bushing Failure
  • Description/Symptoms: Clunking noises from the front suspension, especially over bumps. Reduced handling precision.
  • Solution: Replacing the worn control arm bushings or the entire control arm assembly.
  • Estimated Cost to Fix: $500 - $1,500 (depending on the number of arms needing repair and parts used)
  • Recalls: None Found
• Magnetic Ride Control (If Equipped) Failure
  • Description/Symptoms: Uneven ride quality, suspension malfunction warning lights, and potential fluid leaks from the struts.
  • Solution: Replacing the affected magnetic ride struts/shocks.
  • Estimated Cost to Fix: $1,000 - $2,000+ per strut
  • Recalls: None Found

Electrical

• Oxygen (O2) Sensor Failure
  • Description/Symptoms: Check engine light illumination, poor fuel economy, and potential engine performance issues.
  • Solution: Replacing the faulty O2 sensor.
  • Estimated Cost to Fix: $200 - $500+
  • Recalls: None Found
• Faulty Mass Air Flow (MAF) Sensor
  • Description/Symptoms: Rough idling, stalling, poor acceleration, and a check engine light.
  • Solution: Replacing the MAF sensor.
  • Estimated Cost to Fix: $200 - $400
  • Recalls: None Found

Exterior

• DRL (Daytime Running Light) Failure
  • Description/Symptoms: One or both DRLs failing to illuminate.
  • Solution: Replacing the faulty DRL bulb or LED module.
  • Estimated Cost to Fix: $100 - $300+
  • Recalls: None Found

Interior

• Navigation/MMI System Issues
  • Description/Symptoms: Freezing, slow response times, and software glitches within the Multi Media Interface (MMI) system.
  • Solution: Software updates, or replacement of MMI components in severe cases.
  • Estimated Cost to Fix: $200 - $1,000+
  • Recalls: None Found

Summary

The 2010 Audi S4 offers a compelling blend of performance and luxury, but it’s important to be aware of potential issues. The most concerning problems revolve around the engine, particularly timing chain tensioner failure, which can be costly to repair. Transmission issues with the S-Tronic dual-clutch can also be significant. While other issues exist, they are generally less severe. Overall, prospective buyers should budget for higher-than-average maintenance costs and prioritize vehicles with well-documented service histories.