2017 Mercedes-Benz B-Class 1.5L Diesel · FG67 TDU

The 2017 Mercedes-Benz B-Class holds a valid MOT passed on 21 July 2025 at 66,319 miles, yet the maintenance trend over the preceding two years reveals a pattern of deferred brake work rather than proactive upkeep. That pass followed a failure on the same day at 66,316 miles, where both front and rear pads were flagged as worn or below the 1.5 mm minimum, and both rear discs were noted as worn. The tester also issued advisories for thin rear pads and worn rear discs during the subsequent pass, indicating the underlying wear was marginal rather than fully resolved. A buyer should treat the current brake components as near the end of their service life. The vehicle has covered roughly 66,319 miles over nine years, averaging approximately 7,369 miles per year, which is typical for a family hatchback and suggests regular use rather than long-term standing. The MOT record shows a gap of nearly one year between the August 2024 test at 60,005 miles and the July 2025 test at 66,319 miles, during which the car accumulated 6,314 miles. This is a normal annual rate, but the sparse testing history, with only three tests recorded since August 2023, limits visibility into interim condition. No rapid mileage spikes or suspicious jumps are present. The recurring theme across the record is brake wear. Front pads were flagged as thin in August 2024 at 60,004 miles and again as below 1.5 mm in July 2025 at 66,316 miles, suggesting the front set lasted roughly 6,000 miles before reaching minimum thickness. Rear pads and discs have appeared as advisories in both the 2023 and 2025 tests, pointing to a slow but persistent deterioration. The offside rear service brake fluctuation noted in August 2024, though not excessive, hints at a possible sticking caliper or uneven disc wear that warrants a physical inspection. A cut in the nearside rear tyre, deep enough to expose ply or cords, caused the 2024 failure and raises questions about tyre condition awareness. A buyer should prioritise a thorough check of the braking system. Have a technician measure remaining pad thickness and disc condition on all four corners, paying particular attention to the offside rear caliper for signs of binding. Inspect the nearside rear tyre for sidewall damage and confirm the spare, if fitted, is serviceable. Given the age and mileage, also examine suspension bushes, coil springs, and subframe mounting points for corrosion or deterioration, as these are common failure points on Mercedes-Benz B-Class models of this generation. The MOT record alone does not confirm structural integrity beneath the floor pan, so an underbody inspection is strongly advised before purchase.