2003 — 2007
3.5L (VQ35DE) - 350GT Coupe
Petrol
Check this by shifting through all gears slowly during your test drive; the synchros in the manual transmission can show signs of wear over time, often resulting in a notchy feel.
While driving at low speeds, listen closely for any rattling or buzzing sounds from underneath the vehicle, as the heat shields on the exhaust system are known to occasionally loosen on cars of this age.
While the engine is idling, observe the oil pressure gauge; if the needle fluctuates significantly or remains very low after the engine has reached operating temperature, it is worth investigating the health of the oil gallery gaskets.
Check this by turning the steering wheel lock-to-lock in a parking lot; look for any strange whining noises or 'stuttering' in the steering feel, which can sometimes indicate the power steering pump or rack might require attention.
Consider a full cooling system refresh, including a new thermostat and radiator hoses to ensure the VQ engine stays cool.
The suspension components, specifically the front lower control arm bushings, often reach the end of their service life and may require replacement to maintain handling precision.
At this point, it is wise to monitor the timing chain tensioners for any unusual noise, as this is a high-mileage interval for the internal timing components.
Keep up with 5,000km to 7,500km oil changes using high-quality synthetic oil to keep the VQ35DE internals happy.
Periodically check the differential fluid levels to ensure smooth power delivery to the rear wheels.
Inspect the cabin air filter annually; it’s an easy, inexpensive way to keep the interior smelling fresh.
Clean the Mass Air Flow (MAF) sensor occasionally, as this can improve throttle response and fuel efficiency.
Regularly monitor your coolant levels, as the overflow tank can sometimes develop hairline cracks as the plastic ages.
Estimated repair costs if issues arise
In some older VQ engines, the paper gaskets behind the timing cover can degrade over time. It is a labor-intensive job, so if you notice low oil pressure, it is worth planning for this specialized repair.
Given our road conditions in New Zealand, the factory bushings and shocks may eventually soften. Depending on the car's history, you might eventually need to budget for a refresh of the front end to bring back that sharp handling.
If this component needs attention in the future, the estimated cost in NZ is dependent on whether you choose an OEM replacement or a performance-oriented upgrade.
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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