2020 INFINITI QX80

The 2020 INFINITI QX80 is a full-size luxury SUV known for its spaciousness, powerful engine, and comfortable ride. It boasts a 5.6-liter V8 engine that produces 400 horsepower and 413 lb-ft of torque, paired with a 7-speed automatic transmission. While owners appreciate the QX80’s powerful engine, luxurious interior, and towing capacity, some common complaints revolve around its fuel economy, infotainment system usability, and overall size, which can make it difficult to maneuver in tight spaces.

Engine

5.6L V8

• Oil Leaks
  • Description/Symptoms: Some owners have reported oil leaks, often originating from the valve cover gaskets or the front timing cover. Symptoms include seeing oil spots under the vehicle, a burning oil smell, and potentially low oil levels.
  • Solution: Replacing the faulty gaskets or sealing the timing cover is the most common fix.
  • Estimated Cost to Fix: $200 - $1,500+ depending on location of leak
• Catalytic Converter Failure
  • Description/Symptoms: Premature failure of the catalytic converters. This can result in a check engine light, decreased fuel economy, and a sulfur smell from the exhaust.
  • Solution: Replacing the catalytic converter(s).
  • Estimated Cost to Fix: $1,000 - $2,500+

Transmission

7-Speed Automatic

• Harsh Shifting/Hesitation
  • Description/Symptoms: Some owners have reported experiencing rough or delayed shifting, particularly between lower gears. This can manifest as a noticeable “clunk” or a momentary hesitation during acceleration.
  • Solution: In some cases, a software update or transmission fluid flush can resolve the issue. More severe cases may require valve body repair or replacement.
  • Estimated Cost to Fix: $150 - $3,000+

Suspension

• Air Suspension Issues (if equipped)
  • Description/Symptoms: If the vehicle is equipped with the optional air suspension, it can sometimes experience issues with air leaks, compressor failure, or sensor malfunctions. Symptoms include the vehicle sagging on one side, the air suspension warning light illuminating, or the inability to adjust the ride height.
  • Solution: Repairing or replacing the leaking air springs, the air compressor, or faulty sensors.
  • Estimated Cost to Fix: $500 - $2,000+

Electrical

• Infotainment System Freezing/Crashing
  • Description/Symptoms: The infotainment system can be prone to freezing, crashing, or becoming unresponsive. This can affect navigation, audio, and other vehicle functions.
  • Solution: A software update may resolve the issue. In some cases, the infotainment unit may need to be replaced.
  • Estimated Cost to Fix: $0 (software update) - $1,500+ (replacement)
• Sensor Failures
  • Description/Symptoms: Various sensors, such as those for the parking assist system, blind-spot monitoring, and tire pressure monitoring system (TPMS), can sometimes fail. This can result in warning lights, inaccurate readings, or the system not functioning correctly.
  • Solution: Replacing the faulty sensor.
  • Estimated Cost to Fix: $100 - $500+ per sensor

Exterior

• Automatic Liftgate Malfunctions
  • Description/Symptoms: The automatic liftgate may experience issues such as failing to open or close properly, getting stuck, or making unusual noises. This can be caused by a faulty actuator, sensor, or hinge.
  • Solution: Replacing the faulty components.
  • Estimated Cost to Fix: $200 - $800+

Interior

• Navigation system glitches
  • Description/Symptoms: The navigation system may have problems with displaying the current location or providing accurate routes.
  • Solution: Navigation system must be reprogrammed by a dealership or a qualified mechanic.
  • Estimated Cost to Fix: $100 - $300

Recalls

• NHTSA Recall Number: 20V763000

Summary

The 2020 INFINITI QX80, while a luxurious and powerful SUV, can experience several issues that owners should be aware of. The most significant potential expenses involve engine oil leaks and catalytic converter failure. Transmission problems and air suspension malfunctions (if equipped) can also be costly to repair. Electrical glitches, particularly with the infotainment system, are also fairly common. Owners should be diligent about maintenance and address any warning signs promptly to prevent more extensive and expensive repairs.