2007 — 2009
3.0L V6 (M272) - C280 Classic/Elegance/Avantgarde
Petrol
Check the balance shaft gear status by listening for a rhythmic rattling at idle during a cold start. | Description: The M272 V6 engines produced before mid-2008 can occasionally experience premature wear of the balance shaft sprocket, which is a significant repair.
Monitor the engine temperature gauge closely while idling for an extended period. | Description: It is worth keeping an eye on the thermostat housing, as plastic components of this age can become brittle and lead to minor coolant leaks.
Ensure the 7G-Tronic transmission shifts smoothly without hesitation or flaring when accelerating. | Description: These gearboxes generally perform well, but fluid maintenance is vital; verify the service history to ensure the transmission oil was changed at the recommended intervals.
Test all electrical features, specifically the COMAND infotainment system and seat adjustments. | Description: Electrical gremlins can sometimes surface in the W204; ensure the battery is in good health, as low voltage can trigger false dashboard warnings.
Usually the time to replace the serpentine belt and check all idler pulleys for signs of wear.
Consider a full transmission fluid and filter flush to keep the 7G-Tronic shifting like new.
A common point where suspension bushings and ball joints may show their age on New Zealand roads.
Check the tyre condition and alignment to ensure even wear across all four wheels.
Check the service logbook for proof of regular oil changes using high-quality synthetic lubricants.
Inspect the cabin air filter to ensure the HVAC system remains fresh and clear of debris.
Verify that the brake discs and pads have plenty of life left, as these are heavy cars that work their brakes hard.
Confirm the presence of both working remote keys, as replacements from a dealer can be quite expensive.
Estimated repair costs if issues arise
If the engine light pops on with a P2004 code, it may be the plastic tumble flaps in the intake manifold. Eventually, you might need to budget for a manifold replacement or a refurb kit.
Given NZ road conditions, it is common to consider replacing front control arm bushings. This will restore that classic Mercedes 'bank vault' ride quality.
While regular fluid changes mitigate this, should you experience harsh shifts in the future, the valve body unit may require professional attention or replacement.
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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