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Infiniti FX37: Common Problems & Reliability Guide (South Africa)

Also covers: FX50, QX70

Real, sourced data · last reviewed 2026-09-02
30+ years of practical automotive experience behind these reports - our sourcing methodology

These are issues documented for the Infiniti FX37 in general - things to check for, not a diagnosis of any particular car. Whether a specific car has one depends on its age, mileage, service history and how it was used.

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Fuel Pressure Sensor Fire-Risk Recall Plus Shudder/Hesitation TSB Pattern

Fuel System / Fire Risk (recall); Transmission (7-speed automatic shudder/hesitation, TSB, applicability to this exact model unconfirmed); Engine (VQ37VHR oil consumption, not recalled, not formally TSB-covered for this specific complaint by any source checked) · severity: 14V683000 is genuinely safety-critical - a real, disclosed fuel-leak/fire risk per NHTSA's own filing. The ITB12-027 shudder/hesitation pattern is a real drivability concern (harsh downshifts, hesitation on re-acceleration) rather than a disclosed safety-critical defect in the sources checked - Infiniti's own bulletin frames this as a driveability complaint remedied by software reprogramming, not a structural or safety fault. VQ37VHR oil consumption is a real, moderate-severity wear item - unmanaged oil consumption on any engine carries a real risk of oil starvation, but no source checked in this pass described this specific engine's consumption pattern as severe enough to itself constitute a safety defect. · confidence: 42/100 · 4 cited sources
Applies to: VQ37VHR 3.7L naturally-aspirated petrol V6, paired with the JATCO JR710E… / VK50VE 5.0L naturally-aspirated petrol V8 (QX70/FX50 variant) - included in this card's… - not every engine this model has been sold with
ⓘ Not yet individually classified

Symptoms to watch for

  • 14V683000 (recall): no reliable pre-failure symptom - a fuel leak from a loosened sensor may not be apparent to the driver before it becomes a fire risk; a direct VIN check is the only reliable method
  • ITB12-027 pattern (shudder/hesitation, shared-powertrain TSB of unconfirmed QX70-specific coverage): a harsher-than-expected downshift when coasting to a stop, a hesitation or lag when accelerating after coasting, and a general shudder sensation from the transmission during low-speed, part-throttle driving
  • VQ37VHR oil consumption (not recalled): needing to top up engine oil noticeably between scheduled service intervals; a low-oil warning if consumption goes unmanaged; on pre-2012-production engines specifically, oil staining or leakage from the front timing-cover/oil-gallery area consistent with a squeezed-out paper gasket

What To Check

14V683000 is NOT test-drive-detectable - a fuel-sensor torque defect requires a VIN check or direct inspection, not driving impressions. The transmission shudder/hesitation pattern IS genuinely test-drive-detectable - coasting to a stop and re-accelerating under light throttle is a real, reliable way to surface the symptom if present, consistent with Infiniti's own bulletin describing exactly this driving scenario as the trigger condition. Oil consumption is not reliably test-drive-detectable on a single drive and requires service-history/top-up-record review instead.

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This guide summarises documented, sourced findings for the Infiniti FX37 generally. It is not an assessment of any specific vehicle - mileage, service history and condition vary by example. A full AutoLytiQs™ report checks a specific listing for sale against this data plus a live South African market valuation, to tell you whether that exact vehicle is a good buy.

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