2007 Audi S4

Introduction

The 2007 Audi S4 is a high-performance sedan that delivers exceptional driving dynamics and refinement. It features a powerful 4.2-liter V8 engine producing 340 horsepower and 302 lb-ft of torque, paired with a six-speed manual or a six-speed automatic transmission. The S4 is praised for its responsive handling, luxurious interior, and ample power, although it can be subject to some common issues.

Engine

• 2.0T Timing Chain Tensioner Failure
  • Description: The timing chain tensioner can weaken and fail, causing the timing chain to slip and potentially leading to catastrophic engine damage.
  • Symptoms: Engine rattling or ticking noises, especially at cold start-up or under load.
  • Solution: Replacing the timing chain and tensioner.
  • Estimated Cost: $500 - $2,000
  • Recalls: N/A
• 2.0T Intake Manifold Runner Flap Failure
  • Description: The plastic intake manifold runner flaps can break or become disconnected, causing loss of power and potential engine damage.
  • Symptoms: Reduced engine performance, poor fuel economy.
  • Solution: Replacing the intake manifold.
  • Estimated Cost: $1,000 - $2,000
  • Recalls: N/A
• 4.2L Fuel Pump Failure
  • Description: The fuel pump can fail prematurely, resulting in engine stalling or difficulty starting.
  • Symptoms: Sudden loss of engine power while driving, difficulty starting the car.
  • Solution: Replacing the fuel pump.
  • Estimated Cost: $1,000 - $2,000
  • Recalls: N/A

Transmission

• Six-speed automatic Mechatronic Unit Failure
  • Description: The mechatronic unit, which controls the transmission’s shifting, can develop issues leading to transmission problems.
  • Symptoms: Jerky shifting, delayed or refused gear changes, transmission shuddering.
  • Solution: Replacing the mechatronic unit.
  • Estimated Cost: $2,000 - $5,000
  • Recalls: N/A

Suspension

• Front Control Arm Bushing Wear
  • Description: The rubber bushings in the front control arms can prematurely wear out, leading to compromised handling and stability.
  • Symptoms: Noises over bumps, uneven tire wear, impaired steering response.
  • Solution: Replacing the control arm bushings.
  • Estimated Cost: $300 - $600
  • Recalls: N/A
• Rear Subframe Mount Failure
  • Description: The rear subframe mounts can become loose or damaged, affecting suspension alignment and handling.
  • Symptoms: Unusual noises, body roll under acceleration or braking, loss of vehicle stability.
  • Solution: Inspecting and replacing the rear subframe mounts as needed.
  • Estimated Cost: $1,000 - $2,000
  • Recalls: N/A

Electrical

• Electrical Gremlins
  • Description: Various electrical components, such as the lighting system, interior electronics, or sunroof, can experience malfunctions.
  • Symptoms: Intermittent or complete failure of electrical systems, flickering lights, power window or sunroof problems.
  • Solution: Troubleshooting and replacing faulty components.
  • Estimated Cost: $ varies depending on the component and labor
  • Recalls: N/A
• Battery Drain
  • Description: The car’s battery can discharge excessively due to parasitic electrical drains.
  • Symptoms: Difficulty starting or a drained battery after the car has been parked for a period.
  • Solution: Inspecting and identifying the parasitic drain and rectifying it.
  • Estimated Cost: $100 - $500
  • Recalls: N/A

Interior

• Climate Control Actuator Failure
  • Description: The actuators for the climate control system can malfunction, leading to poor temperature or airflow control.
  • Symptoms: Inability to adjust the cabin temperature or airflow, inconsistent air distribution, clicking sounds from the dash.
  • Solution: Replacing the faulty actuators.
  • Estimated Cost: $300 - $700
  • Recalls: N/A

Exterior

• Headlight Condensation
  • Description: Moisture buildup inside the headlight lenses can occur due to seal failure.
  • Symptoms: Foggy or hazy headlights, reduced illumination.
  • Solution: Replacing the headlight lenses or resealing them.
  • Estimated Cost: $200 - $600
  • Recalls: N/A
• Door Lock Mechanism Failure
  • Description: The door lock mechanisms can fail, preventing the doors from locking or unlocking.
  • Symptoms: Doors not locking or unlocking properly, difficulty operating the door lock switches.
  • Solution: Replacing the faulty locks.
  • Estimated Cost: $200 - $500 per door
  • Recalls: N/A

Summary

While the 2007 Audi S4 is a capable and refined high-performance sedan, it can be prone to various issues. Some of these issues, such as electrical gremlins or interior electronics failures, may be relatively minor and inexpensive to fix. However, problems with the engine (e.g., timing chain failure, fuel pump failure) or transmission (e.g., mechatronic unit failure) can be more severe and costly to repair. Potential buyers should be aware of these potential issues and factor them into their purchasing decision.