2016 INFINITI QX80

The 2016 INFINITI QX80 is a full-size luxury SUV known for its powerful engine, spacious interior, and comfortable ride. It’s powered by a 5.6-liter V8 engine producing 400 horsepower and 413 lb-ft of torque, paired with a 7-speed automatic transmission. People generally appreciate the QX80’s opulent interior, smooth ride, and strong towing capability. Common complaints include its large size making it difficult to maneuver in tight spaces, lower-than-average fuel economy, and some find the infotainment system dated.

Engine

5.6L VK56VD V8

• Oil Consumption
  • Description/Symptoms: Some owners have reported excessive oil consumption, requiring them to add oil more frequently than expected between oil changes. Symptoms can include the low oil pressure light illuminating and the engine running rough due to low oil levels.
  • Solution: In some cases, a simple repair such as replacing the PCV valve is the fix. In other cases, replacement of piston rings or even the entire engine may be required. A compression test can help determine the extent of the damage.
  • Estimated Cost to Fix: $100 (PCV Valve) - $5000+ (Engine Replacement)
  • Recalls: None Found
• Timing Chain Tensioner Failure
  • Description/Symptoms: Some owners have reported premature failure of the timing chain tensioners, which can lead to engine noise, poor performance, and eventually, engine damage.
  • Solution: Replacement of the timing chain, tensioners, and guides.
  • Estimated Cost to Fix: $2000 - $4000
  • Recalls: None Found

Transmission

7-Speed Automatic (RE7R01A)

• Harsh Shifting/Slipping
  • Description/Symptoms: Some owners have reported harsh or erratic shifting, particularly between certain gears. Slipping can also occur, where the engine revs up without a corresponding increase in speed.
  • Solution: In some cases, a software update or transmission fluid flush can resolve the issue. However, more severe cases may require valve body replacement or a complete transmission rebuild or replacement.
  • Estimated Cost to Fix: $200 (Fluid Flush) - $500 (Software Update) - $1500+ (Valve Body) - $4000+ (Transmission Rebuild/Replacement)
  • Recalls: None Found

Suspension

• Air Suspension Failure (If Equipped)
  • Description/Symptoms: The air suspension system, if equipped, can be prone to leaks, compressor failures, and sensor malfunctions. Symptoms include the vehicle sitting unevenly, a “suspension fault” warning light, and a rough ride.
  • Solution: Replacing the faulty air struts, compressor, or sensors. It is often recommended to replace components in pairs to ensure even performance.
  • Estimated Cost to Fix: $800 - $2000+ per corner (strut replacement), $500 - $1500+ (compressor replacement)
  • Recalls: None Found

Electrical

• Infotainment System Malfunctions
  • Description/Symptoms: The infotainment system can experience glitches, freezing, and unresponsive touchscreens. Navigation issues, Bluetooth connectivity problems, and audio malfunctions are also reported.
  • Solution: A software update may resolve some issues. If hardware is the issue, the unit will need to be replaced.
  • Estimated Cost to Fix: $0 (Software Update) - $500+ (Replacement Unit)
  • Recalls: None Found
• Battery Drain Issues
  • Description/Symptoms: Some owners have experienced excessive battery drain, particularly when the vehicle is left unattended for extended periods. This can lead to difficulty starting the vehicle or a completely dead battery.
  • Solution: Identifying and addressing the parasitic drain. Common culprits include faulty sensors, aftermarket accessories, or a failing alternator.
  • Estimated Cost to Fix: $100 - $500+ (depending on the source of the drain)
  • Recalls: None Found

Exterior

• Automatic Liftgate Issues
  • Description/Symptoms: Some owners report problems with the automatic liftgate, including it not opening or closing properly, getting stuck, or making unusual noises. This can be caused by faulty sensors, actuators, or hinges.
  • Solution: Replacing the faulty sensors, actuators, or hinges.
  • Estimated Cost to Fix: $300 - $1000+ (depending on the part)
  • Recalls: None Found

Interior

• Seat Motor Failures
  • Description/Symptoms: Power seat motors can fail, causing the seats to become stuck in one position or unable to adjust properly.
  • Solution: Replacing the faulty seat motor.
  • Estimated Cost to Fix: $300 - $800+ per seat
  • Recalls: None Found

Summary

The 2016 INFINITI QX80, while luxurious and powerful, has some common issues owners may face. Engine problems like oil consumption and timing chain tensioner failure can be costly to repair. Transmission issues, particularly harsh shifting, can also be a concern. The air suspension system (if equipped) can require expensive repairs. Electrical issues with the infotainment system and battery drain are also present. The severity of these issues can range from minor inconveniences to major repairs, with costs varying accordingly. Potential buyers should be aware of these issues and thoroughly inspect the vehicle before purchasing, including reviewing maintenance records.