2006 Mercedes B-Class 2.0L Petrol · MA06 BMY

The 2006 Mercedes B-Class presents a mixed mechanical picture. The most recent MOT, conducted on 25 November 2025 at 93,908 miles, passed but carried three advisories that signal a shift from the clean record seen in prior years. An oil leak, though not yet excessive, was flagged under item 8.4.1 (a) (i). The offside front inner CV joint boot was recorded as severely deteriorated, meaning grease contamination and joint wear are likely already underway. Rear service brake performance only just met the minimum standard, with the tester noting the system likely requires adjustment or repair. Taken together, these advisories suggest the maintenance trend is worsening after three consecutive clean passes from 2022 through 2024. The mileage pattern tells a consistent story of light use. Between the December 2022 test at 90,616 miles and the November 2025 test at 93,908 miles, the car covered just 3,292 miles across nearly three full years, averaging roughly 1,100 miles annually in that window. Earlier years show similarly modest accumulation, with the car reaching 93,908 miles over approximately two decades. This is well below the typical annual average and points to extended periods of low or no use. Sparse mileage can preserve mechanical components in some respects but introduces its own risks, including deteriorated rubber seals, stale brake fluid, and potential corrosion in systems that benefit from regular operation. A buyer should focus the physical inspection on the front drivetrain and braking system. The severely deteriorated offside front inner CV boot is a priority. Once the boot splits, joint wear accelerates rapidly, and a replacement joint or complete driveshaft assembly may be needed if play or clicking is present on lock. The rear brake advisory from November 2025 warrants a check of rear caliper slide pins, pad thickness, and disc condition. Binding or seized rear calipers are a common cause of marginal rear brake performance on this platform. The oil leak, while not yet failing, should be traced to its source, whether that is a valve cover gasket, camshaft seal, or oil cooler pipe, as oil contamination can damage rubber hoses and bushings over time. Beyond the flagged items, the low-mileage pattern means rubber components across the vehicle deserve close scrutiny. Suspension bushes, engine mounts, and coolant hoses can perish from age rather than use. The single 2022 failure for a cut nearside rear tyre and an SRS warning lamp, both of which were resolved before the December 2024 retest, does not indicate a recurring problem, but a current SABS or airbag lamp on the dashboard would warrant immediate diagnostic attention. Overall, the car has been lightly used and generally well maintained, but the November 2025 advisories confirm that deferred attention to the CV joint, brakes, and oil leak is now overdue.