2021 Audi S5

The 2021 Audi S5 is a stylish and sporty coupe, sportback, or convertible known for its sleek design, comfortable interior, and engaging driving experience. It comes standard with a turbocharged 3.0-liter V6 engine producing 349 horsepower and 369 lb-ft of torque. All models use an eight-speed automatic transmission and Audi’s Quattro all-wheel-drive system. Some owners appreciate the car’s luxurious features and powerful engine, while others have voiced concerns about reliability, technology glitches, and maintenance costs.

Engine

3.0L Turbocharged V6

• Thermostat Housing Leak
  • Description/Symptoms: Coolant leak that typically drips down the front of the engine. Can cause the engine to overheat.
  • Solution: Replace the thermostat housing. Some owners have reported the updated part number is 06M-121-111.
  • Estimated Cost to Fix: $300 - $700+
  • Recalls: None Found
• Oil Leaks from Valve Cover Gaskets
  • Description/Symptoms: Oil leaks may occur from the valve cover gaskets. This may be noticeable by an oil burning smell. Low oil levels may also be observed.
  • Solution: Replace the valve cover gaskets.
  • Estimated Cost to Fix: $400 - $800+
  • Recalls: None Found

Transmission

8-Speed Automatic (ZF 8HP55A)

• Rough Shifting/Hesitation
  • Description/Symptoms: Some owners have reported experiencing rough shifting or hesitation, particularly between lower gears.
  • Solution: A software update may resolve the issue, but in some cases, a transmission replacement or rebuild might be necessary.
  • Estimated Cost to Fix: $200 (software update) - $5,000+ (replacement/rebuild)
  • Recalls: None Found

Suspension

No Issues Found

Electrical

• Infotainment System Freezing/Lagging
  • Description/Symptoms: The MMI infotainment system may freeze, lag, or become unresponsive. This can affect navigation, audio, and other vehicle functions.
  • Solution: A software update or system reset may resolve the issue. In some cases, the MMI control unit may need to be replaced.
  • Estimated Cost to Fix: $0 (software update/reset) - $1,000+ (MMI control unit replacement)
  • Recalls: None Found
• Sensor Failures (Parking Sensors, etc.)
  • Description/Symptoms: Malfunctioning parking sensors or other sensor failures. This can cause false alarms or inaccurate readings.
  • Solution: Replace the faulty sensor.
  • Estimated Cost to Fix: $200 - $500+ per sensor
  • Recalls: None Found

Exterior

No Issues Found

Interior

• Rattling/Creaking Noises
  • Description/Symptoms: Some owners have reported rattling or creaking noises coming from the dashboard, door panels, or rear deck.
  • Solution: Identifying and isolating the source of the noise, and then tightening or replacing the affected components.
  • Estimated Cost to Fix: $100 - $500+ (depending on the source and complexity)
  • Recalls: None Found

Summary

The 2021 Audi S5 presents a mix of potential issues. Engine and transmission issues, while not universally reported, can be costly to repair. Electrical glitches in the infotainment system and sensor failures are also common complaints. Interior rattles, while minor, can be irritating. Suspension and exterior components have not been noted for many issues. Overall, a thorough inspection and extended test drive, coupled with a review of the car’s service history, are advisable before purchasing a used 2021 Audi S5. Addressing these issues can range from minor fixes to significant repairs, so potential buyers should budget accordingly.