2021 Audi S4

Introduction

The 2021 Audi S4 is a high-performance sedan powered by a turbocharged 3.0-liter V6 engine. It is available with a standard all-wheel-drive system and an 8-speed automatic transmission. The S4 is praised for its powerful engine, agile handling, and luxurious interior. However, like with any vehicle, it has also faced some issues.

Engine

3.0L Turbocharged V6

• Valve Cover Leak:
  • Description/Symptoms: Oil leaking from the valve cover
  • Solution: Replace the valve cover gasket
  • Estimated Cost to Fix: $500 - $800
  • Recalls: None Found
• Thermostat Failure:
  • Description/Symptoms: Difficulty maintaining engine temperature, resulting in overheating or underheating
  • Solution: Replace the thermostat
  • Estimated Cost to Fix: $200 - $400
  • Recalls: None Found
• Water Pump Failure:
  • Description/Symptoms: Leaking coolant, overheating, and loss of power
  • Solution: Replace the water pump
  • Estimated Cost to Fix: $600 - $1,000
  • Recalls: None Found

Transmission

8-Speed Automatic

• Shifting Problems:
  • Description/Symptoms: Hard or delayed shifting, transmission slipping
  • Solution: Update transmission software or replace transmission components
  • Estimated Cost to Fix: $1,000 - $2,500
  • Recalls: None Found

Suspension

• Strut Mount Failure:
  • Description/Symptoms: Noises while driving over bumps or uneven surfaces, poor handling
  • Solution: Replace the strut mounts
  • Estimated Cost to Fix: $400 - $600
  • Recalls: None Found

Electrical

• Battery Drain:
  • Description/Symptoms: Battery quickly loses charge, difficulty starting the car
  • Solution: Check for parasitic drain, replace battery
  • Estimated Cost to Fix: $200 - $500
  • Recalls: None Found
• Electrical Shorts:
  • Description/Symptoms: Various electrical issues, such as malfunctioning lights, gauges, or power windows
  • Solution: Diagnose and repair faulty wiring or components
  • Estimated Cost to Fix: $300 - $1,000
  • Recalls: None Found

Exterior

No Issues Found

Interior

• Center Console Trim Rattle:
  • Description/Symptoms: Noises coming from the center console while driving
  • Solution: Secure or replace the rattling trim panel
  • Estimated Cost to Fix: $100 - $200
  • Recalls: None Found

Summary

The 2021 Audi S4 has encountered several common issues, including engine leaks, transmission problems, suspension issues, electrical faults, and interior rattles. While some issues are minor and cost-effective to repair, others, such as transmission and engine problems, can be more severe and expensive to fix. Overall, the reliability of the S4 appears to be average, with the frequency and severity of issues varying depending on individual vehicles and driving conditions.