2015 Audi S4

Introduction:

The 2015 Audi S4 is a high-performance sedan known for its powerful engine, responsive handling, and luxurious interior. It comes standard with a 3.0L turbocharged V6 engine producing 333 horsepower and 325 lb-ft of torque. Transmission options include a 6-speed manual or an 8-speed automatic. The S4 is praised for its impressive performance, comfortable ride, and well-appointed cabin. However, like all vehicles, it has certain issues that potential buyers should be aware of.

Engine

• 3.0L Turbocharged V6

Carbon Buildup on Intake Valves:

• Description/Symptoms: Reduced engine performance, rough idling, and decreased fuel efficiency.
• Solution: Manual cleaning of the intake valves and carbon deposits.
• Estimated Cost to Fix: $300 - $600+
• Recalls: None Found

Transmission

• 6-Speed Manual

Synchronizer Wear:

• Description/Symptoms: Difficulty shifting gears, especially into higher gears.
• Solution: Replacement of the synchronizer rings and other affected components.
• Estimated Cost to Fix: $1,000 - $2,000+

• Recalls: None Found

• 8-Speed Automatic

Mechatronic Unit Failure:

• Description/Symptoms: Transmission won’t engage, shift erratically, or go into limp mode.
• Solution: Replacement of the mechatronic unit, which controls the transmission’s operation.
• Estimated Cost to Fix: $4,000 - $6,000+
• Recalls: None Found

Suspension

• Adaptive Damping System Malfunction:
• Description/Symptoms: Poor ride quality, uneven tire wear, and reduced handling performance.
• Solution: Diagnosis and repair of faulty sensors, actuators, or other system components.
• Estimated Cost to Fix: $500 - $1,500+
• Recalls: None Found

Electrical

• Infotainment System Screen Failure:
• Description/Symptoms: Blank or glitchy screen, unresponsive touch controls, and system crashes.
• Solution: Replacement of the infotainment system display unit.
• Estimated Cost to Fix: $1,000 - $2,000+
• Recalls: None Found

Exterior

• No Issues Found

Interior

• Headliner Sagging:
• Description/Symptoms: Loose or sagging headliner material due to adhesive failure.
• Solution: Removal of the old headliner and installation of a new one.
• Estimated Cost to Fix: $500 - $1,000+
• Recalls: None Found

Summary:

Overall, the 2015 Audi S4 is a reliable vehicle with relatively few major issues. However, potential buyers should be aware of the potential problems with the engine, transmission, suspension, electrical, and interior components. The severity and cost of these issues can vary depending on the specific part and labor rates in your area. It’s advisable to have a thorough pre-purchase inspection performed to identify any potential issues before purchasing a used S4.