2007 Mercedes-Benz B-Class 2.0L Diesel · KU07 JMB

The most recent DVSA test, conducted on 15 August 2023, resulted in a Pass; however, the inspection was not without observations, as five advisories were issued. Reviewing the broader MOT history, the maintenance trend is best described as mixed but showing some areas of concern. The April 2022 attempt resulted in a Failure with two Major defects, the most serious of which was classified as Dangerous, relating to front brake pads worn below the 1.5mm minimum thickness. That same test also flagged a split constant velocity boot on the offside front drive shaft and a worn suspension arm ball joint. While the vehicle subsequently passed its 2023 test, the recurring nature of the drive shaft boot issue and persistent brake disc advisories across multiple tests suggest that these systems have been a source of ongoing attention and warrant careful physical inspection before purchase. With a recorded mileage of 156,139 miles over approximately 19 years, this B-Class has averaged around 8,218 miles per year, which is broadly typical for a vehicle of its age and broadly indicative of regular use rather than long periods of standing. There are no conspicuous gaps or sudden spikes in the recorded mileage on the tests available, suggesting consistent usage patterns, which from a mechanical standpoint generally means components have been worked rather than suffering the corrosion and seal degradation commonly seen on very low mileage or stored vehicles. Nevertheless, the cumulative wear associated with a mileage figure well in excess of 150,000 is significant, particularly for suspension, drivetrain, and braking components, all of which have already shown defects in the recent MOT record. The advisories concerning the rear brake discs, noted as pitted or scored on both the 2022 and 2023 tests, indicate a progressive wear condition that, while not yet deemed seriously weakened, will eventually require disc replacement. On a test drive, the buyer should listen for brake shudder under firm application, particularly from the rear, and feel for any pulsing through the brake pedal, which would suggest disc runout. Given the Dangerous failure for excessively worn front brake pads only the year prior, the front braking system should be inspected thoroughly, and any replacement components verified for quality. The nearside front tyre, previously flagged as worn on the edge and having sustained a nail injury, suggests possible tracking or suspension geometry concerns; uneven inner or outer edge wear on the front tyres would point to worn wishbone bushes, ball joints, or tracking misalignment, the latter of which was also flagged in the March 2022 failure. Several advisories relate to the front suspension and steering assemblies, including a shock absorber showing light oil misting and deteriorated front brake hoses. Oil misting on a shock absorber suggests the seal is beginning to fail, and while not yet a failure item, it indicates the units are ageing and may soon require replacement, with symptoms typically presenting as a loose or bouncy ride and reduced wet-weather grip. Deteriorated brake hoses can become a safety concern if left unattended, as aged rubber may swell under pressure or crack, leading to a spongy pedal or, in extreme cases, brake fluid loss. In addition to these recorded concerns, given the vehicle's age, a prospective buyer should pay particular attention to age-related deterioration not always captured on an MOT, including tyre sidewall perishing and cracking, corrosion on brake discs and calipers that may have bound from infrequent heavy use, the condition and charge state of the 12V battery, and verification of time-based servicing such as brake fluid, coolant, and automatic transmission fluid changes, all of which degrade on a calendar basis regardless of the recorded mileage.