Infiniti QX60 L50 — Problems & Common Faults
Weaknesses, engine ratings and buying advice
The L50 QX60 is Infiniti's first standalone generation of its midsize three-row SUV, closely related to the Nissan Pathfinder underneath — and here's the headline: the V6 rarely fails, the transmission under it does. Two versions of the 3.5-liter V6 were used: the port-injected VQ35DE (2014–2016, 265 hp) and, from 2017, the direct-injected VQ35DD (also 265 hp). That 2017 switch introduced a new, pricier risk.
The defining problem on the L50 is the Jatco CVT (model code JF017E, also known as RE0F10E/RE0F10J). Shudder at 15–25 mph under light throttle is the early warning of belt slip inside the unit, and fault code P17F0 usually means a full transmission replacement for $4,000–8,000. A $277 million class-action settlement (Stringer v. NNA) extended warranty coverage by 24 months/24,000 miles for 2015–2018 models and reimburses up to $5,000 for independent-shop repairs; a separate, later suit covers 2019–2021 vehicles with the same symptoms. NHTSA has logged over 500 complaints against the L50, with 181 of them — the single largest bucket — filed against the powertrain. Independent buying guides flag 2014, 2015, and 2017 as the years to be most wary of, and point to 2016, 2018, and 2020 as comparatively clean — 2014 additionally for wheel hub assemblies that can separate from the brake caliper, and for delayed or failed airbag deployment reported across 2013–2017 builds.
If given a choice of engine, don't underrate the VQ35DD from 2017 on: direct-injection oil sludge can trigger total engine failure from as early as 47,000 miles, with repair costs of $13,000–16,000 — and some dealers deny warranty coverage even with documented maintenance. Intake valve carbon buildup shows up around 68,000 miles, typical for a direct injector with no fuel washing the valves. On the earlier VQ35DE (2014–2016), watch instead for the plastic timing chain guide, which can crack around 87,000 miles, and camshaft position sensors that start failing near 62,000 miles.
Beyond the drivetrain, the L50 annoys owners with a panoramic sunroof that can shatter spontaneously from thermal stress (its own class action), an ABS actuator recall on 2017–2019 models over a fire risk from leaking brake fluid, an AC compressor that fades from around 75,000 miles, plus a power liftgate and dashboard coating that both age prematurely.
Test-drive checklist: Light throttle at 15–25 mph while watching for shudder, ABS light staying on longer than 10 seconds after startup, cold-start rattle from the engine bay, full 5,000-mile oil-change records demanded on any VQ35DD.
2026 market: Early 2014 examples run $7,000–12,000; clean 2020 models land around $17,000–25,000.
Insider pick: A 2018 or 2019 VQ35DD with unbroken 5,000-mile oil-change records and a CVT that's been verified shudder-free — late enough for the updated CVT software, before the priciest stretch of the direct-injection sludge risk really bites.
Generations
Engine Overview
The Infiniti QX60 L50 is available with one engine variant at 265 hp.
3.5L naturally aspirated V6 — smooth, cultured, with that signature VQ exhaust note Nissan tuned with Ferrari as a reference. Adequate power for an SUV this size. Plastic timing chain guides are the known Achilles heel from 130,000 km. Oil consumption through piston rings in early units worth monitoring. Camshaft sensors fail regularly — OEM parts only.
- !! Increased oil consumption from piston rings from 120,000 km
Early VQ35DE units (up to roughly model year 2004) suffer from piston rings that fail to seal properly at certain RPM levels. Oil consumption can reach a quart every 1,000 to 2,000 miles. Nissan revised the ring design in 2004.
Symptoms: Frequent need to top up oil between service intervals, bluish exhaust smoke on cold start, dropping oil level with no visible external leak. - !! Plastic timing chain guide breaks from 140,000 km
The upper guide of the main timing chain is made of plastic that becomes brittle over time and can crack or break off. The broken piece slips down, the chain develops slack, and it rattles noticeably on cold start.
Symptoms: Rattling noise from the timing chain on cold start that fades after a short time, occasionally rough idle. - !! Connecting rod bearing failure from neglected oil care from 144,000 km
Neglected oil maintenance or long periods of inactivity can cause a connecting rod bearing to seize. After startup the engine runs quietly for a few minutes, then develops a distinct rattling knock under load.
Symptoms: Loud rattling knock after a short warm-up period, difficulty starting when cold, oil pressure warning light.
+ 9 more engine weaknesses + vehicle weaknesses
An updated version of the VQ35DE with direct injection — same basic architecture, but a markedly higher tendency toward oil sludge formation from the direct-injection design and high operating temperatures. Oil change intervals should be shortened to a maximum of 3,750 miles, using only high-quality full-synthetic oil. Without diligent maintenance, sludge can form from around 45,000 miles onward and lead to complete engine failure. Repair shops frequently deny warranty claims once sludge is found, citing alleged maintenance neglect even when regular oil changes are documented.
- !! Oil sludge buildup from direct injection from 76,000 km
The VQ35DD is prone to rapid oil sludge formation from its direct-injection design and high operating temperatures. Left untreated, sludge clogs oil passages and can lead to total engine failure, sometimes despite documented maintenance.
Symptoms: White smoke from the exhaust, cylinder misfires, check engine light, in severe cases complete engine failure. - !! Timing chain rattles early — sludge accelerates wear from 130,000 km
Sludge from DI soot clogs the oil passages feeding the timing chain tensioner on the VQ35DD, causing premature chain slack. The problem is exacerbated by extended oil change intervals. Early rattling can progress to catastrophic chain failure with engine damage if ignored.
Symptoms: Rattling or chattering on cold start from engine front, rattling on load changes, cam timing fault codes, rough idle after chain has stretched significantly - !! Intake valve carbon buildup from direct injection from 110,000 km
Because the VQ35DD injects fuel directly into the combustion chamber, no fuel washes over the intake valves. Carbon deposits build up on the back of the valves and disrupt airflow into the cylinders.
Symptoms: Power loss, misfires, rough cold starts, uneven idle.
+ 1 more engine weaknesses + vehicle weaknesses
Vehicle Weaknesses
| Weakness | Cost | |
|---|---|---|
| CVT (Jatco JF017E/RE0F10E) transmission failure — headline issue The Jatco CVT8 (model code JF017E, also RE0F10E/RE0F10J) 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) added a 24-month/24,000-mile warranty extension for 2015–2018 models, with up to $5,000 reimbursement for repairs at independent shops. A separate, later class action covers 2019–2021 models with the same symptoms. Symptoms: Rhythmic shudder at 15–25 mph under light throttle, delayed Park-to-Drive engagement, high-pitched whine on acceleration, RPM surge without speed increase, burnt fluid smell from 90,000 km | High |
Top Reported Issues
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Known Problems and Issues +
A total of 24 weaknesses have been documented for the Infiniti QX60 L50 (2014–2020) — 16 engine-related and 8 vehicle-related. One problem engine: VQ35DE (3.5L V6). Typical issues affect Gearbox, Body, Brakes, HVAC.
QX60 (VQ35DE, 2014–2016) — Stay Away!: Increased oil consumption from piston rings, Plastic timing chain guide breaks, Connecting rod bearing failure from neglected oil care. Power: 265 PS.
QX60 (VQ35DD, 2017–2020) — Be Careful: Oil sludge buildup from direct injection, Timing chain rattles early — sludge accelerates wear, Intake valve carbon buildup from direct injection. Power: 265 PS.
What to watch out for with the Infiniti QX60? See the detailed listing of all engine and vehicle weaknesses in the sections above.
Frequently Asked Questions
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Last updated: February 2026 · All information without guarantee