2010 Mercedes-Benz B-Class 1.7L Petrol · OV10 FPL

The most recent DVSA examination on 19 September 2023 resulted in a Pass, which is a positive immediate indicator, but the overall maintenance trend warrants careful scrutiny. One week prior, on 12 September 2023, the same vehicle failed its MOT on two major defects relating to parking brake efficiency and service brake efficiency below the required thresholds, alongside advisories concerning a corroded offside rear brake pipe, thin nearside rear brake pads, and a worn nearside rear brake disc. The fact that the car passed just seven days later following remedial work suggests that the braking system received attention, but a prospective buyer should satisfy themselves that the work was thorough and not merely a short-term rectification. The presence of the offside rear brake pipe advisory in both the failed and passed tests of 2023 indicates that this corrosion issue was carried forward without full repair, which is a notable concern given the implications for hydraulic integrity. The recorded mileage of 72,322 miles across approximately sixteen years equates to an annual average of around 4,520 miles, which is considerably below the typical usage for a vehicle of this age and class. This low utilisation figure suggests either a predominantly urban or short-journey usage pattern, periods of extended standing, or perhaps a combination of both. Such low annual mileage carries its own mechanical considerations; prolonged standing can accelerate corrosion on brake discs, calipers, and underbody components, degrade brake fluid through moisture absorption irrespective of mileage, and lead to perishing of rubber components such as tyres, drive belts, and suspension bushes due to age rather than wear. Given the documented braking system concerns, particular attention should be paid during a test drive and physical inspection. On the road, listen for any squealing, grinding, or scraping noises from the rear brakes, and observe whether the vehicle pulls to one side under braking or whether the parking brake holds the vehicle securely on an incline. Inspect the offside rear brake pipe for active corrosion, blistering, or weeping of hydraulic fluid, as corroded brake pipes are a common failure point on older Mercedes-Benz models and a safety-critical concern. The recurring advisories for pitted and scored rear brake discs suggest the discs may require replacement or skimming, and the nearside rear brake pad advisory from 2023 indicates the pads were already approaching the limit at that time, meaning replacement has likely occurred but should be verified through service records. Uneven tyre wear noted historically on the nearside front should prompt a check of front wheel alignment and suspension geometry, including wishbone bushes and anti-roll bar links. Beyond the documented advisories, the age and low mileage of this B-Class demand a comprehensive age-related inspection. Examine the tyres closely for sidewall cracking and perishing, as rubber degrades with time regardless of tread depth, and check the production date markings. The 12-volt battery should be load-tested, as batteries on infrequently used vehicles often fail prematurely due to repeated partial discharge cycles. Inspect the underbody, subframe, and suspension components for standing corrosion, paying particular attention to the rear axle and spring platforms. Brake fluid, coolant, and automatic transmission fluid (if applicable) should be considered for replacement on a calendar basis rather than purely mileage intervals, given the low annual usage. Finally, verify the service book stamps and request evidence of recent maintenance, ensuring that items such as the auxiliary drive belt, spark plugs on the petrol variants, and the condition of the exhaust system and catalytic converter have been attended to in line with manufacturer schedules.