2019 INFINITI QX80

The 2019 INFINITI QX80 is a full-size luxury SUV known for its powerful engine, spacious interior, and comfortable ride. It boasts a strong road presence and offers a range of luxury features. However, some owners have reported issues. The 2019 QX80 comes standard with a 5.6-liter V8 engine producing 400 horsepower and 413 lb-ft of torque, paired with a 7-speed automatic transmission. Some owners appreciate its towing capacity and smooth highway cruising, while others find its fuel economy disappointing and its infotainment system outdated.

Engine

5.6L V8

• Timing Chain Issues
  • Description/Symptoms: Some owners have reported hearing a rattling noise upon startup, especially in colder weather. This can indicate stretching or wear of the timing chain. If left unaddressed, it can lead to engine damage.
  • Solution: Replacing the timing chain, guides, tensioners, and possibly the camshaft sprockets.
  • Estimated Cost to Fix: $2,000 - $4,000+
  • Recalls: None Found
• Catalytic Converter Failure
  • Description/Symptoms: Reduced engine performance, poor fuel economy, illuminated check engine light. Diagnostic codes will indicate a catalytic converter issue.
  • Solution: Replacement of the faulty catalytic converter(s).
  • Estimated Cost to Fix: $1,500 - $3,000+ (per converter)
  • Recalls: None Found

Transmission

7-Speed Automatic

• Harsh Shifting/Slipping
  • Description/Symptoms: Abrupt or jerky shifts between gears, hesitation or slippage during acceleration, and difficulty engaging gears.
  • Solution: In some cases, a transmission fluid flush and software update may resolve the issue. However, if the problem persists, a more in-depth repair involving valve body replacement or transmission rebuild may be necessary.
  • Estimated Cost to Fix: $300 (fluid flush and update) - $4,000+ (rebuild/replacement)
  • Recalls: None Found

Suspension

• Air Suspension Failure (if equipped)
  • Description/Symptoms: Sagging or uneven ride height, compressor running constantly, rough ride, and warning lights on the dashboard. The vehicle may lean to one side.
  • Solution: Replacing the failed air struts, air compressor, or related components (air lines, height sensors).
  • Estimated Cost to Fix: $800 - $2,000+ (per strut), $500 - $1,500+ (compressor)
  • Recalls: None Found

Electrical

• Battery Drain Issues
  • Description/Symptoms: Dead battery, requiring frequent jump starts. The battery may be draining overnight.
  • Solution: Identifying and repairing parasitic draws in the electrical system. This may involve troubleshooting various components, such as the audio system, security system, or other electrical modules.
  • Estimated Cost to Fix: $100 - $500+ (diagnosis and repair)
  • Recalls: None Found
• Infotainment System Freezing/Crashing
  • Description/Symptoms: The infotainment screen freezes, becomes unresponsive, or crashes intermittently.
  • Solution: Attempting a system reset or software update. In some cases, replacing the infotainment system module may be necessary.
  • Estimated Cost to Fix: $0 (reset) - $1,000+ (module replacement)
  • Recalls: None Found

Exterior

• Automatic Tailgate Malfunction
  • Description/Symptoms: The tailgate fails to open or close automatically, or operates erratically.
  • Solution: Replacing the tailgate motor, struts, or latch assembly.
  • Estimated Cost to Fix: $300 - $1,000+
  • Recalls: None Found

Interior

• Navigation System Issues
  • Description/Symptoms: Inaccurate GPS location, out of date maps, or slow response times.
  • Solution: Software updates or replacing the navigation system module.
  • Estimated Cost to Fix: $0 (update) - $1,000+ (module replacement)
  • Recalls: None Found

Summary

The 2019 INFINITI QX80, while a luxurious and capable SUV, has some common issues that prospective buyers should be aware of. Engine issues, particularly related to the timing chain and catalytic converters, can be costly to repair. The transmission can have shifting problems requiring potentially extensive repairs. Air suspension failures (if equipped) can also add to the maintenance burden. Electrical glitches, such as battery drain and infotainment system malfunctions, are also reported. The severity of these issues varies, but potential buyers should factor in the possibility of these repairs when considering a used 2019 QX80. Pre-purchase inspections are highly recommended.