The modern twin-turbo V6 behind the Q50 and Q60 — genuinely impressive performance from a comparatively compact displacement, with a track record that's solid so far but still shorter than some of Infiniti's older naturally aspirated engines.
This engine represents a genuine departure from the naturally aspirated VQ family that defined Infiniti's reputation for over a decade — strong, genuinely impressive performance from a comparatively compact twin-turbo V6. As a newer design, the long-term high-mileage track record is still accumulating relative to the older VQ engines, though reported issues to date have been limited to minor, typical items rather than anything approaching a chronic concern.
Not a guarantee, but a pattern seen consistently across owner forums and independent-garage reporting.
Minor carbon buildup symptoms, where present, may begin appearing within this range.
Examples with documented maintenance commonly continue without major issue at this stage, though this range has less accumulated data than older engines.
Ask for documented oil change history, since turbocharged engines generally reward consistent, high-quality maintenance more than naturally aspirated designs.
A specialist diagnostic scan can catch early turbo-related codes that haven't yet become noticeable symptoms.
Beyond general maintenance history, there's relatively little else specific to flag on this comparatively modern, well-regarded engine.
Model-specific pages, with notes on how it behaves in that particular car.