2016 — 2020
2.4L (Theta II GDi) - Efficient/Fleet Trim
Petrol
When moving from a standstill, pay close attention to the 6-speed automatic transmission. In cars of this age, it is common to consider how smooth the shifts are; any hesitant or jerky transitions might suggest the transmission fluid needs a professional assessment.
Before setting off, cycle through the infotainment system and steering wheel controls. Check this by testing every button to ensure there is no electrical lag or screen flickering, as these units can occasionally develop minor software fatigue.
While driving at low speeds over uneven surfaces, listen for any suspension knocks. Check this by navigating over a few speed bumps to see if the bushings show signs of wear, which is a standard wear-and-tear point for larger sedans of this weight.
After the engine has reached operating temperature, check for any ticking sounds from the engine bay. It is worth noting that the Theta II GDi engine benefits from regular, high-quality oil changes to keep the high-pressure fuel pump and injectors running quietly.
Usually marks the time to consider replacing the spark plugs and checking the condition of the drive belts.
A good point to perform a comprehensive cooling system flush and evaluate the state of the suspension struts.
Consider having the transmission fluid flushed and ensuring the high-pressure fuel pump is still performing within factory parameters.
Stick to a strict 10,000km oil change interval using high-quality synthetic oil to protect the GDi engine internals.
Keep an eye on your coolant levels during routine checks to ensure the cooling system remains in top shape.
Regularly clean the air intake sensors if you notice a slight drop in fuel efficiency over time.
Keep a record of your transmission fluid changes, as smooth shifting is the key to longevity in these models.
Ensure your cabin air filter is replaced annually to keep the climate control system operating efficiently.
Estimated repair costs if issues arise
As the vehicle ages, rubber bushings can naturally perish. Depending on the car's history, you might eventually need to budget for a suspension refresh to restore that premium, smooth Grandeur ride quality.
If this component needs attention in the future, the estimated cost in NZ involves sourcing the GDi-specific pump and professional installation to maintain correct fuel pressure.
To keep the shifts crisp, it is common to consider a professional transmission flush every 80,000km to 100,000km as part of your Future Budget Planning.
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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