1977 MG B GT 2.5L Petrol · PTE 421S

The vehicle presents a stable and currently sound roadworthiness status, having passed its most recent MOT on 19 November 2025 at 9,991 miles with zero defects recorded. That clean result is significant. It follows a pattern of very low annual use and suggests the car has been kept in a maintained, roadworthy state through the present day. The maintenance trend is therefore stable and currently positive, with no active advisories or failures to flag. The mileage record, however, is unusual and warrants careful interpretation. Between the 2007 April test at 28,618 miles and the 2019 October test at just 229 miles, the recorded distance appears to have dropped dramatically, which is physically impossible without a meter replacement or a data recording anomaly. The 2019 figure of 229 miles is almost certainly a replacement or corrected reading rather than a true cumulative odometer value. From 2019 onward the mileage climbs modestly to 4,714 miles by December 2021 and then to 9,991 miles by November 2025, representing roughly 5,277 miles over nearly four years, or about 1,320 miles annually. That is still low for a 49-year-old classic but consistent with careful, limited use. The gap between 2007 and 2019, spanning twelve years with no recorded tests, is a notable blank period during which the vehicle's condition and usage are entirely unaccounted for. The 2007 failure is the most technically revealing entry in the record and should guide any pre-purchase inspection. The tester flagged extensive corrosion across the nearside front floor in three places, both rear suspension mounting areas, the offside rear seat belt anchorage, and the offside front brake master cylinder or servo mounting area. Multiple brake pipes and structural floor sections were corroded to the point of failure. That level of corrosion, concentrated in load-bearing and safety-critical zones, indicates the car either stood unused in damp conditions or was operated without adequate underbody protection. A buyer should therefore inspect the front floor pans, sills, subframe mounts, and rear suspension mounting points very carefully, looking for signs of previous welding that may have deteriorated or fresh corrosion that has reappeared since the 2025 clean test. Beyond the structural concerns, the 2007 failure also flagged a worn nearside front track rod end ball joint and a below-minimum tyre on the same corner, suggesting uneven front-end wear that may still be present if the car has covered only limited miles since any remedial work. The braking system, specifically the offside front brake pipe and master cylinder mounting area, was also a corrosion risk at that time. A prospective buyer should have the front suspension and steering joints load-tested, examine all rigid brake lines for pitting or moisture ingress, and verify that the brake master cylinder is securely mounted with no weakness in its surrounding structure. Given the very low mileage and long stationary periods typical of this vehicle, flexible brake hoses, tyre age, and fluid condition should also be checked regardless of the clean 2025 result.