2019 — 2024
2.0L OM654 I4 Turbo - B 220 d
Diesel
Test drive task: Shift into reverse and drive at low speeds in a quiet area. | Observation: While the 8G-DCT transmission is generally smooth, you may want to observe any hesitation or shudders during low-speed crawling, as these transmissions can sometimes require a software reset or adaptation to suit different driving styles.
Check this by: Navigating the MBUX infotainment system during your stop. | Observation: Ensure the touchpad and touchscreen respond without lag. In some W247 models, if the system feels sluggish, a simple software update at your local specialist can often resolve it, but it is worth testing thoroughly.
While driving: Listen for any excessive wind noise around the A-pillars. | Observation: Some B-Class owners have noted that door seals can settle over time. It is helpful to check that the seals are tight and uniform, as this can affect cabin quietness on New Zealand's coarser chip-seal roads.
Check this by: Pop the bonnet and inspect the engine bay plastics and hoses. | Observation: The OM654 is a sophisticated unit; look for any signs of surface cooling fluid residue or oil mist around the turbo piping, which can occasionally occur on higher-mileage examples.
Usually marks the first major transmission fluid service to ensure long-term smoothness.
A common point where secondary suspension components, such as sway bar links, may begin to show their age on local road conditions.
Typically the time to verify the health of the auxiliary drive belt and tensioner assembly.
Prioritize regular engine oil changes every 15,000km or annually to keep the OM654’s DPF system happy.
Ensure the transmission fluid service (if applicable to your specific mileage) is documented in the service history.
Check the tire wear patterns; the B-Class can be sensitive to alignment, especially on our winding roads.
Confirm the AdBlue system has been topped up correctly, as this is vital for the clean running of the diesel engine.
Regularly clear out the scuttle panel area near the windscreen to prevent debris from trapping moisture.
Estimated repair costs if issues arise
If you primarily drive short distances, the DPF may eventually require a forced regeneration or professional cleaning. Future budget planning for this is wise to keep the engine breathing efficiently.
Given the state of some NZ regional roads, you might eventually need to budget for replacing front lower control arm bushes to maintain that signature Mercedes ride comfort.
As these vehicles approach higher mileage, it's common to consider the cooling system as a preventive measure to avoid overheating risks. Budgeting for this ensures continued reliability.
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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