Infiniti QX60
Updated VQ35DE with direct injection — same power, dramatically increased sludge risk from the DI setup. Oil change intervals must be shortened to 5,000 miles maximum. Owners report complete engine failures from 45,000 miles despite regular service. Dealers frequently deny warranty claims on sludge-related failures.
QX60 2017-2020 — DI sludge replaces CVT as primary concern
Infiniti switched to direct injection in 2017 — same CVT risk, added oil sludge risk. Owners report engine failure at 45k-90k miles despite regular oil changes. Dealers deny warranty. The 2017-2020 QX60 is the generation to be most cautious about. Buy with proof of 5,000-mile oil changes or avoid.
Engine Weaknesses 3
Direct injection V6 prone to severe oil sludge buildup even with regular oil changes. Engine replacement costs $13,000–18,000. Dealers deny warranty coverage citing maintenance issues. Oil changes every 5,000 miles are mandatory.
Symptoms: Sudden power loss, low oil pressure warning, white exhaust smoke, thick black sludge visible on oil cap
Direct injection does not wash intake valves — PCV oil mist deposits carbon. Noticeable power reduction from around 80,000 km. Walnut blasting cleaning recommended.
Symptoms: Rough idle, misfires, power loss in upper rev range
Valve cover gaskets become leaky with mileage on the VQ35DD. Standard inexpensive repair.
Symptoms: Oily smell, visible oil traces on valve covers, oil on spark plugs
Vehicle Weaknesses 8
The Jatco JF018E CVT is the defining reliability problem of the L50 QX60. Shudder at 15–25 mph under light throttle is the early warning of belt slip. Fault code P17F0 mandates full transmission replacement. The $277M class action settlement (Stringer v. NNA) extended warranty to 96 months/94,000 miles for 2015–2018 models with up to $5,000 reimbursement.
Tempered glass in the panoramic sunroof shatters spontaneously from thermal stress — class action filed against Nissan covering 2009–2020 models. Infiniti attributes failures to 'thermal stress' in tempered glass.
ABS actuator pump allows brake fluid to leak onto internal circuit board. Electrical short creates fire risk. NHTSA recall affects 2017–2019 QX60. Do not drive if ABS warning light is permanently on.
AC system loses cooling capacity from around 75,000 miles through compressor wear or refrigerant loss. Evaporator repairs often require dashboard removal. Repair costs up to $2,800.
Electric liftgate actuator fails due to motor wear or control unit error. Dealers frequently cite worn spindle hydraulic arms. Full replacement up to $2,600. Fuse check recommended first.
Electric power steering pump produces a high-pitched whine audible inside the cabin. Infiniti issued a noise insulation fix. Dealers repair under warranty by installing a sound dampening wrap around the pump.
Soft-touch plastic coating on the dashboard and door panels degrades under heat and UV exposure. Surface becomes tacky, transfers black residue onto hands and clothing. Class action lawsuits filed against Nissan/Infiniti.
Front and rear control arm rubber bushings wear from around 60,000 miles. Results in steering vagueness and clunking over bumps. Full control arm replacement recommended once bushings are worn.
