2005 — 2010
3.5L V6 (EGG) - Touring Trim
Petrol
Check this by inspecting the front suspension arms: During your test drive, listen for any clunking sounds over speed bumps, as the front control arm bushings on the LX platform can show wear over time.
While driving at a steady speed, observe the transmission shifting: Ensure the 4-speed automatic transitions smoothly, as these units benefit from clean fluid and it is worth verifying there are no harsh engagements.
Inspect the electrical features by testing every button: Cycle through the climate control and window switches, as the 300C has complex wiring that can occasionally exhibit minor gremlins as the vehicle reaches this age.
During your inspection, check for moisture under the carpets: Inspect the footwells and the boot for any signs of water ingress, which can sometimes occur around the sunroof drains or window seals.
Consider checking the cooling system components and hoses to ensure they remain in top shape for your road trips.
This is a great point to review the suspension health and ensure the transmission fluid has been serviced to keep everything driving smoothly.
Focus on checking engine ancillaries like the alternator and water pump to maintain the reliability of the 3.5L V6 engine.
Keep the engine happy with high-quality synthetic oil changes every 10,000km.
Keep an eye on the transmission fluid color and level to ensure crisp gear changes.
Regularly clean the sunroof drains to prevent any water buildup during those rainy NZ days.
Check your brake fluid quality once a year to ensure your stopping power remains consistent.
Keep the cabin filter fresh to ensure your air conditioning continues to blow clean and crisp.
Estimated repair costs if issues arise
Depending on the car's history, you might eventually need to budget for replacing bushings or ball joints as they naturally settle over time. It's a common job for this platform to restore that 'luxury' ride feel.
If this component needs attention in the future, the estimated cost in NZ is usually associated with preventative maintenance like replacing the water pump or thermostat to keep the 3.5L V6 running at the perfect temperature.
As part of your future budget planning, setting aside funds for a professional transmission service can help extend the life of your gearbox and maintain smooth shifting.
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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