2018 Audi A5 Quattro

The 2018 Audi A5 Quattro is a stylish and sporty coupe, sedan (Sportback), and convertible known for its sleek design, comfortable interior, and engaging driving experience. The most common engine is the 2.0-liter turbocharged four-cylinder, producing 252 horsepower and 273 lb-ft of torque. While praised for its aesthetics, handling, and technology, some owners have reported issues. What some owners dislike is the relatively high cost of maintenance and some occasional electronic glitches. The other available engine for the S5 trim is a 3.0-liter turbocharged V6, producing 354 horsepower and 369 lb-ft of torque. Both engines are paired with an automatic transmission, either a 7-speed dual-clutch for the A5 or an 8-speed automatic for the S5.

Engine

2.0L Turbocharged Inline-4 (252 HP)

• Oil Consumption
  • Description/Symptoms: Some owners have reported excessive oil consumption, requiring frequent top-offs between oil changes. This can lead to engine damage if not monitored closely.
  • Solution: Regular monitoring of oil levels and potentially replacing piston rings or valve seals if the consumption is severe. A compression test can help diagnose the issue.
  • Estimated Cost to Fix: $2,000 - $5,000+ (depending on the severity and required repairs)
  • Recalls: None Found
• Turbocharger Failure
  • Description/Symptoms: Turbocharger failure can manifest as a loss of power, unusual noises (whining, screeching), and potentially a check engine light.
  • Solution: Replacing the turbocharger. Inspecting oil lines for blockages to prevent future failures.
  • Estimated Cost to Fix: $1,500 - $3,000+
  • Recalls: None Found

3.0L Turbocharged V6 (354 HP) - S5 Trim

• Coolant Leaks
  • Description/Symptoms: Coolant leaks from the water pump or thermostat housing. Signs include low coolant levels, overheating, and visible leaks.
  • Solution: Replacing the faulty water pump or thermostat housing.
  • Estimated Cost to Fix: $800 - $1,500+
  • Recalls: None Found

Transmission

7-Speed Dual-Clutch (A5)

• Rough Shifting/Hesitation
  • Description/Symptoms: Some owners have experienced rough or jerky shifting, particularly at low speeds. There are also instances of hesitation during acceleration.
  • Solution: Performing a transmission adaptation or software update. In some cases, clutch replacement may be necessary.
  • Estimated Cost to Fix: $200 (adaptation) to $3,000+ (clutch replacement)
  • Recalls: None Found

8-Speed Automatic (S5)

No Issues Found

Suspension

• Creaking/Squeaking Noises
  • Description/Symptoms: Creaking or squeaking noises from the suspension, especially over bumps. This is sometimes attributed to worn control arm bushings or sway bar links.
  • Solution: Replacing the worn bushings or sway bar links.
  • Estimated Cost to Fix: $300 - $800+ (depending on the component and labor)
  • Recalls: None Found

Electrical

• Infotainment System Glitches
  • Description/Symptoms: The MMI (Multi Media Interface) system can experience glitches such as freezing, slow response times, or complete failure.
  • Solution: Software updates are often the first step. In some cases, replacing the MMI unit is required.
  • Estimated Cost to Fix: $100 (software update) to $1,000+ (MMI unit replacement)
  • Recalls: None Found
• Sensor Failures (Parking Sensors, etc.)
  • Description/Symptoms: Failure of parking sensors can lead to inaccurate readings or complete malfunction. Other sensors, such as those related to the adaptive cruise control, can also fail.
  • Solution: Replacing the faulty sensor.
  • Estimated Cost to Fix: $200 - $500+ per sensor
  • Recalls: None Found

Exterior

• Sunroof Issues
  • Description/Symptoms: Sunroof malfunction can include getting stuck open or closed, making excessive noise during operation, or leaking water.
  • Solution: Inspecting and cleaning the sunroof tracks and seals. Replacing the sunroof motor or assembly if necessary.
  • Estimated Cost to Fix: $200 - $1,000+
  • Recalls: None Found

Interior

• Airbag Light
  • Description/Symptoms: A fault code is triggered that indicates an airbag sensor is damaged or broken.
  • Solution: Replacing the faulty airbag sensor.
  • Estimated Cost to Fix: $200 - $1000+
  • Recalls: None Found

Summary

The 2018 Audi A5 Quattro, while generally a reliable and enjoyable vehicle, has some common issues. The 2.0L engine may exhibit oil consumption and turbocharger problems, while the 7-speed dual-clutch transmission can experience rough shifting. Electrical issues, particularly with the infotainment system and sensors, are also a concern. Suspension noises and sunroof malfunctions are relatively common. The severity and cost of these issues vary, but some repairs, such as engine work or MMI unit replacement, can be expensive. Potential buyers should be aware of these potential problems and thoroughly inspect the vehicle before purchasing.