The V6 behind the TL and MDX — fundamentally sound, with reliability that hinges almost entirely on one maintenance item owners sometimes overlook.
Unlike the K24, this V6 uses a timing belt rather than a chain — and unlike a typical interference-free design, a snapped belt here causes serious internal damage. Respected on schedule, it's a genuinely strong, smooth engine. Versions with Variable Cylinder Management (VCM), which deactivates cylinders under light load, carry a secondary, well-documented complaint about rough transitions between modes.
Not a guarantee, but a pattern seen consistently across owner forums and independent-garage reporting.
Timing belt and water pump service — the single most important maintenance item on this engine, non-negotiable.
VCM shudder complaints, where fitted, most commonly surface in this range.
Oil leaks from valve cover or cam seals become more common but rarely urgent.
This is the defining check on any J35: get documented proof of the timing belt interval, and if there's any doubt at all, budget for immediate replacement rather than taking a chance.
On VCM-equipped versions, feel for a shudder during light throttle cruising, the classic symptom of a VCM-related complaint.
A persistent oil leak is rarely urgent on this engine but worth factoring into your offer.
Model-specific pages, with notes on how it behaves in that particular car.