2000 — 2006
2.7L (OM612) - 270 CDI Turbo Diesel
Diesel
Check this by inspecting the firewall and underside for rust: The Sprinter platform of this era can show signs of corrosion around the wheel arches and door bottoms, which is common for vehicles stored in coastal or high-humidity regions.
While driving, listen for a 'whooshing' sound: This can indicate a split turbo intercooler hose, which is a frequent occurrence in the OM612 engine bay as rubber components age with heat and mileage.
During the test drive, monitor the dashboard for 'Limp Mode': If the engine power feels restricted or the revs are capped, it is worth investigating if the Mass Air Flow (MAF) sensor or vacuum actuator is struggling, as these are known to trigger the ECU to protect the engine.
While parked, cycle through the transmission gears: Ensure the shifts are smooth and without significant delay, as the longevity of the transmission in these heavy motorhomes often depends on the oil cooling system's history.
Consider a full cooling system refresh including the water pump, as these parts often reach the end of their design life around this interval.
Focus on suspension components; the weight of the Hymer coachbuilt body puts significant stress on the Sprinter's leaf springs and shock absorbers.
Monitor the turbocharger efficiency and fuel injector spray patterns, as these can impact fuel economy and exhaust health as the engine reaches higher seniority.
Prioritize regular oil and high-quality filter changes every 10,000km to keep the OM612 turbocharger lubricated and happy.
Inspect the auxiliary drive belt and tensioner annually, as these are critical for keeping the cooling fan and alternator functioning during long trips.
Keep an eye on the brake fluid moisture content; flushing this every two years is a simple way to ensure the heavy vehicle stops reliably on steep NZ mountain passes.
Check the living area's battery charging system to ensure the Mercedes alternator is effectively charging both the starter and auxiliary house batteries.
Maintain the door seals and window rubbers to prevent water ingress, which protects the Hymer’s structure from the inside out.
Estimated repair costs if issues arise
Given the age and the heavy load these motorhomes carry, the turbo unit may eventually show signs of wear. If you find the boost is inconsistent or the unit is blowing blue smoke, it's a job that will involve a full strip-down of the induction system.
The automatic gearboxes in these older Sprinters are generally robust but do require specific fluid maintenance. If the transmission begins to flare between gears, you might eventually need to budget for a professional service or internal seal refresh.
Because the Hymer body is heavy, the original springs and shocks may have sagged over the years. Upgrading to heavy-duty dampers or replacing the leaf springs can significantly improve handling and ride comfort during your travels.
Noticed something inaccurate or missing?Suggest an edit→
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