2006 — 2013
3.7L (VQ37VHR) - S/Premium
Petrol
Check this by inspecting the oil level and colour; the VQ37VHR engine can occasionally consume oil, so verify it's at the correct level before and after your test drive.
While driving at a steady speed, listen for any hesitation during acceleration; the VVEL (Variable Valve Event and Lift) system is clever, but solenoids can get sluggish if service history is patchy.
Perform a cold start and listen for a brief rattle from the engine bay; while it is common for these engines to have a rhythmic tick, a harsh metallic clatter could suggest timing chain tensioner wear.
Check this by cycling through every gear in manual mode; the 7-speed automatic transmission should be smooth, so feel for any unusual flares or harsh downshifts that might indicate a need for a transmission fluid flush or software update.
Consider replacing the water pump and thermostat, as the plastic components in the cooling system often begin to show their age around this point.
It is a good time to evaluate the suspension bushings and ball joints, as these components frequently wear on NZ roads, affecting handling precision.
The alternator and starter motor may eventually require attention; proactively checking the charge system can prevent getting stranded.
Prioritise high-quality full synthetic engine oil changes every 8,000 to 10,000km to keep the complex VVEL system operating smoothly.
Inspect the coolant system for any signs of weeping at the hoses; keeping the cooling system healthy is vital for this engine.
Check the cabin air filter regularly, as our dusty NZ conditions can clog these, leading to poor air conditioning performance.
Maintain the transmission fluid with genuine Nissan Matic-S or an equivalent high-spec fluid to ensure long-term shifting comfort.
Give the throttle bodies a gentle clean if you notice a slightly erratic idle, as carbon buildup is common over time.
Estimated repair costs if issues arise
In some early VQ37VHR models, the paper gaskets behind the front timing cover can degrade. While not every car experiences this, it is worth keeping in mind as a future budget item, as it requires a decent amount of labour to replace.
Given our winding NZ roads, the control arm bushings and shock absorbers may eventually reach the end of their service life, and setting aside funds will ensure your Infiniti maintains that signature smooth ride.
Depending on your driving style, you might eventually need to budget for new rotors and pads. Opting for quality aftermarket components can provide great stopping power for these spirited sedans.
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Disclaimer: This report is generated with the assistance of AI analysis based on verified automotive data. While we strive for 100% accuracy, enthusiasts should always conduct physical inspections and consult service records. View Full Disclaimer