2007 — 2012
2.0L I4 (QR20DE)
Petrol
Cold start and idle monitoring | Description: The QR20DE engine is prone to camshaft and crankshaft sensor failure; listen for stumbling, hunting idle, or unexpected stalling which indicates sensor degradation.
Navigate uneven road surfaces at low speeds | Description: Listen for clunking or 'drumming' noises from the front end; the E25 chassis (Como/Caravan) often suffers from worn sway bar bushes and ball joints due to its commercial weight.
Full-throttle acceleration from a stop | Description: Check for transmission 'flare' or delay between gear shifts. As a rebadged Nissan, these units require regular fluid changes to avoid solenoid issues.
Visual inspection of the floor pan and sills | Description: Check for corrosion, especially in ex-Japan imports. Look specifically around the step-wells and rear wheel arches which are common rust traps in the NZ coastal climate.
Major service including transmission fluid flush (ATF Matic-D or equivalent), spark plug replacement, and brake fluid renewal.
Minor service including high-quality synthetic oil and OEM filter replacement; inspect brake pad thickness.
Cooling system overhaul including radiator flush and thermostat; inspect timing chain tensioner and accessory drive belts.
Clean the throttle body and MAF sensor to prevent rough idling issues common to the QR engine series.
Inspect the rocker cover gasket for oil leaks into the spark plug wells.
Monitor coolant levels strictly; the QR20DE has a low tolerance for overheating which can lead to head gasket failure.
Check all rubber suspension bushings for perishing or cracking.
Verify the condition of the rear leaf spring shackles and bushings under load.
Estimated repair costs if issues arise
QR engines can suffer from crumbling cat substrates; failure can lead to engine damage if debris is sucked back in.
Complete front-end refresh to pass WOF if heavy commercial use has worn the original components.
Requires 8-ply or 'C' rated light commercial tyres to meet NZ legal load requirements.
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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