2017 INFINITI QX80

The 2017 INFINITI QX80 is a full-size luxury SUV known for its powerful engine, spacious interior, and opulent features. It comes standard with a 5.6-liter V8 engine that produces 400 horsepower and 413 lb-ft of torque, paired with a 7-speed automatic transmission. Owners generally appreciate the QX80’s towing capacity, comfortable ride, and abundance of interior space. Common complaints include its large size making it difficult to maneuver in tight spaces, lower-than-average fuel economy, and somewhat dated infotainment system compared to newer competitors.

Engine

5.6L V8 (VK56VD)

• Timing Chain Failure
  • Description/Symptoms: Rattling noise upon startup, especially when cold. Check engine light may illuminate with codes related to timing. Loss of power.
  • Solution: Replacement of the timing chain, tensioners, guides, and potentially other related components like sprockets.
  • Estimated Cost to Fix: $2,500 - $4,000+
  • Recalls: None Found
• Oil Leaks
  • Description/Symptoms: Visible oil leaks on the engine, often around valve covers or the rear main seal. Burning oil smell. Low oil level warnings.
  • Solution: Replacement of the leaking gaskets or seals.
  • Estimated Cost to Fix: $200 - $1,500+ (depending on the location of the leak)
  • Recalls: None Found
• Catalytic Converter Failure
  • Description/Symptoms: Check engine light illuminated (usually P0420 or P0430 codes), reduced engine performance, rattling noise from the exhaust system, potential failure of emissions test.
  • Solution: Replacement of the faulty catalytic converter.
  • Estimated Cost to Fix: $1,500 - $3,000+ (depending on location)
  • Recalls: None Found

Transmission

• 7-Speed Automatic Transmission

  • Harsh Shifting/Slipping
    • Description/Symptoms: Abrupt or jerky shifts, hesitation when accelerating, slipping between gears.
    • Solution: Depending on the severity, could require a transmission fluid flush, valve body repair/replacement, or complete transmission rebuild/replacement.
    • Estimated Cost to Fix: $300 (fluid flush) - $5,000+ (rebuild/replacement)
    • Recalls: None Found
  • Torque Converter Issues
    • Description/Symptoms: Shuddering or vibrations at low speeds, especially when accelerating. Stalling.
    • Solution: Torque converter replacement.
    • Estimated Cost to Fix: $1,200 - $2,500+
    • Recalls: None Found

Suspension

• Hydraulic Body Motion Control (HBMC) System Leaks/Failures (If Equipped)
  • Description/Symptoms: Vehicle leaning to one side, poor handling, knocking noises from the suspension, HBMC warning light illuminated. Fluid leaks near the shocks/struts.
  • Solution: Replacement of leaking HBMC shocks/struts, hydraulic lines, or pump.
  • Estimated Cost to Fix: $1,500 - $4,000+ (depending on the component)
  • Recalls: None Found

Electrical

• Infotainment System Issues
  • Description/Symptoms: Freezing, Crashing, Slow Response Time, Bluetooth Connectivity Problems, Navigation Errors.
  • Solution: Software updates (if available), replacement of the infotainment unit.
  • Estimated Cost to Fix: $200 (software updates) - $2,000+ (unit replacement)
  • Recalls: None Found
• Battery Drain
  • Description/Symptoms: Vehicle not starting after sitting for a short period. Needing to jump start the vehicle frequently.
  • Solution: Diagnosis of parasitic drain and repair. Replacement of the battery.
  • Estimated Cost to Fix: $150 (Battery replacement) - $1,000+ (Diagnose and repair)
  • Recalls: None Found

Exterior

• Power Liftgate Malfunction
  • Description/Symptoms: Liftgate not opening or closing properly, getting stuck, making unusual noises.
  • Solution: Replacement of the liftgate struts, motor, or latch mechanism.
  • Estimated Cost to Fix: $300 - $1,200+
  • Recalls: None Found

Interior

• Seat Heater Failure
  • Description/Symptoms: Seat heaters not working or only working intermittently.
  • Solution: Replacement of the heating element or control module.
  • Estimated Cost to Fix: $200 - $800+ per seat
  • Recalls: None Found

Summary

The 2017 INFINITI QX80 can present owners with a range of issues, from relatively minor electrical glitches to more significant engine and transmission problems. The timing chain issue on the 5.6L V8 can be a costly repair if left unaddressed. Potential issues with the 7-speed transmission can also lead to significant expense. While the hydraulic body motion control system offers a smooth ride, failures can be costly to repair. Prospective buyers should be aware of these potential issues and consider a pre-purchase inspection to assess the overall condition of the vehicle. The severity of issues ranges from minor inconveniences to major repairs costing several thousand dollars.