What are the most common Infiniti QX70 problems?
According to Au7o's research across NHTSA recalls, manufacturer TSBs, and owner forum reports, the 2014-2017 Infiniti QX70 has 5 documented issues. The most frequently reported are: Seven-Speed Automatic Rough Shifting, Delayed Engagement, and Low-Speed Shudder, Heater Core Leak Causing Coolant Fog, Sweet Smell, and Wet Carpet, VQ37VHR Timing Chain Noise. None are rated critical, but regular maintenance is recommended.
Is the Infiniti QX70 reliable?
The 2014-2017 Infiniti QX70 has 5 known issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports. No issues are rated critical, suggesting generally good reliability. Regular maintenance following the manufacturer's schedule helps prevent many common problems.
How much does it cost to fix common Infiniti QX70 problems?
Repair costs for known Infiniti QX70 issues range from $0 to $3,500, depending on the specific problem and whether you choose DIY or professional repair. Au7o provides step-by-step DIY maintenance guides that can help reduce repair costs.
What year Infiniti QX70 is the most reliable?
Reliability varies across model years of the Infiniti QX70. Based on documented issues, problems are most commonly reported in earlier model years. Au7o recommends checking the specific known issues for your target year before purchasing, and having a pre-purchase inspection performed by a qualified mechanic. Our known issues database covers the 2014-2017 Infiniti QX70 with 5 documented issues compiled from NHTSA recalls, manufacturer TSBs, and owner forum reports.
What is the 2014-2017 Infiniti QX70 Seven-Speed Automatic Rough Shifting, Delayed Engagement, and Low-Speed Shudder?
The QX70's RE7R01A seven-speed automatic draws consistent owner complaints for delayed engagement when selecting drive or reverse, rough or clunky shifts between the lower gears, and a shudder felt during light acceleration at low speed. The transmission is generally durable, and… Repairs typically run $300-$3,500. Severity: medium.
What is the 2014 Infiniti QX70 Heater Core Leak Causing Coolant Fog, Sweet Smell, and Wet Carpet?
The heater core on this chassis develops leaks that push coolant into the cabin through the HVAC case. The signature is unmistakable once you know it: a sweet syrupy smell inside the car, an oily film that fogs the inside of the windshield and will not wipe clean, and damp or soa… Repairs typically run $1,200-$2,800. Severity: medium.
What is the 2014-2017 Infiniti QX70 VQ37VHR Timing Chain Noise?
The VQ37VHR engine in the QX70 can develop timing chain rattle, especially on cold starts. The primary timing chain stretches and the tensioner cannot fully compensate, resulting in a distinctive metallic rattle that typically quiets after 10-30 seconds. Repairs typically run $1,500-$3,500. Severity: medium.
What is the 2014-2017 Infiniti QX70 Transfer Case Output Seal Leak?
AWD-equipped FX/QX70 models develop transfer case output shaft seal leaks, allowing gear oil to seep onto the exhaust and create a burning smell. The seals harden and crack from heat exposure over time. Repairs typically run $300-$800. Severity: medium.
What is the 2014-2017 Infiniti QX70 Clogged Sunroof Drains Causing Cabin Water Leaks and Electrical Faults?
The QX70 carries over the S51 chassis sunroof drain design, in which a tray around the glass panel collects water and routes it through tubes running down the A- and C-pillars. Debris packs the drain nipples at the tray corners, the tray overflows, and water enters the headliner… Repairs typically run $0-$900. Severity: medium.
