2008 Mercedes-Benz B-Class 1.7L Petrol · PN58 AWJ

The latest MOT test for this 2008 Mercedes-Benz B-Class on 2026-06-12 resulted in a clean pass, though it included several recurring advisories that suggest a pattern of minor but persistent issues rather than a sudden deterioration. The advisories on the steering rack inner joint play, front service brake fluctuations, rear brake disc wear, and rear seat belt components indicate that while the vehicle remains roadworthy, these areas have been flagged in multiple tests, reflecting gradual wear or potential long-term issues that require attention. The absence of serious failures or repeated critical defects over the past three years implies a stable maintenance trend, but the advisories warrant closer inspection to prevent escalation into more costly repairs before the next MOT. The vehicle’s recorded mileage of 61,826 miles over approximately 18 years—equivalent to around 3,435 miles annually—is notably low for its age, which may suggest periods of prolonged inactivity or light use. While lower mileage can reduce wear on consumables like tyres and fluids, it also raises concerns about potential standing corrosion, particularly in the brake systems, suspension components, and undercarriage, where moisture and lack of movement can accelerate rust and degradation. Additionally, the consistent advisories on the rear brakes, which were only just meeting service requirements, may indicate that the vehicle has not been driven frequently enough to maintain optimal brake pad-to-disc contact or to prevent the buildup of corrosion or binding in the caliper mechanisms. As a prospective buyer, the most critical areas to inspect are the rear brakes, steering components, and seat belt systems, given their repeated advisories. During a test drive, listen for unusual brake pulsation or shuddering, which could signal warped discs or binding calipers, and check for uneven brake pad wear or excessive play in the steering wheel, which may indicate worn or damaged inner steering joints. The rear brake discs should be examined for pitting, scoring, or excessive thickness loss, as these conditions can compromise braking performance and safety. The steering rack’s offside play should be verified—excessive movement could lead to misalignment or handling instability, particularly at higher speeds. Additionally, inspect the rear seat belt components for any signs of further damage or misalignment, as these can affect occupant safety and may require replacement if compromised. For a vehicle of this age and mileage, particularly one with low annual usage, a thorough physical inspection should also focus on the condition of the tyres, focusing on sidewall perishing or cracking, which can indicate long-term exposure to environmental elements without regular use. Check for any signs of standing corrosion on the undercarriage, particularly around wheel arches, exhaust components, and beneath the rear axle, as stagnant moisture can accelerate rust in these areas. The 12-volt battery should be tested for voltage output and overall health, as prolonged disuse can lead to sulphation or internal failure. Fluid levels, particularly the brake fluid, should be checked for contamination or degradation, as standing fluids can absorb moisture and reduce braking effectiveness. Finally, verify that the service history records are up to date, especially for fluid servicing intervals, which for this model should include brake fluid replacement every 2–3 years, regardless of mileage, due to the hygroscopic nature of such fluids. If no service book is available, consider a professional fluid analysis to assess their condition.