2020 Mercedes-Benz GLB 220 AMG Line Prem D 4M A 1.9L Diesel · ST70 MYY

The most recent MOT, carried out on 20 November 2025, was passed with no recorded defects, following two further passes in November 2024 and November 2023. The only blemish in the recent history was a failure on 24 November 2023 for a nearside windscreen wiper that did not clear the glass effectively; this is a minor safety advisory that would have been rectified before the subsequent pass. Overall the maintenance trend appears stable, with the vehicle having cleared three consecutive tests after the isolated wiper issue, indicating that any identified faults have been promptly addressed. At six years old the GLB has logged just 23 785 miles, an average of roughly 4 000 miles per annum. This is well below the typical UK usage of 8‑10 000 miles per year and suggests either very light daily driving or extended periods of inactivity. Low mileage reduces wear on consumables such as brake pads, clutch and tyre tread, but prolonged standing can accelerate age‑related degradation of rubber components, battery cells and corrosion‑prone metal parts. There is no evidence of any sudden mileage spikes that would point to harsh driving or high‑stress use. For a prospective buyer the first item to verify is the functionality of the nearside wiper and the associated washer system; listen for irregular motor noise and check that the blade makes full contact across the glass without streaking. Examine the tyre sidewalls for cracking, hardening or loss of elasticity, as tyres on a 2020 model are likely five years old or more regardless of tread depth. Confirm that the tread depth meets the legal minimum and that the tyres are of the same size and specification, as mismatched sets can affect handling and fuel consumption. While on the wheel arches, inspect the suspension bushes and control arm joints for any signs of dry rot, cracking or excessive play, which can develop even on low‑mileage cars that have spent time stationary. Given the vehicle’s age, a thorough check of time‑based items is prudent. Test the 12‑volt battery with a load tester or have it scanned for charge‑acceptance, as batteries can lose capacity after several years of limited use. Inspect the brake discs for surface rust, glazing or uneven wear that can cause shudder under heavy braking, and verify that the calipers move freely without binding. Examine all fluid reservoirs – engine oil, coolant, brake fluid and power‑steering fluid – for proper level, colour and any signs of contamination; fluids typically require replacement on a calendar basis even if mileage is low. Finally, look under the chassis for any corrosion of the exhaust system, sub‑frame or mounting points, and ensure the under‑body is free of rust, particularly in the wheel arches and rear suspension areas, as hidden corrosion can compromise structural integrity over time.