1968 Mercedes-Benz 250 2.5L Petrol · 81 EG

A late-sixties Mercedes-Benz 250 carrying 25,470 recorded miles presents an unusually sparse DVSA picture, with only a single PASS certificate on file dated 21 October 2024 and zero advisories or failures recorded. For a 1968 vehicle, this minimal MOT footprint is entirely typical of a classic car that has either been registered as historic and therefore exempt from testing, or only recently brought back into the testing cycle after a long lay-up or pre-1971 build anomaly. The clean pass, with no defects noted on brakes, suspension, tyres, lights or structure, indicates that whatever was inspected at that 2024 test was in sound mechanical order. However, the thinness of the record means there is essentially no longitudinal trend to analyse; there are no recurring advisories to flag as chronic weak points, but equally no prior data to confirm whether the underlying components have been steadily maintained or merely presented well on the day. With approximately 58 years on the road and only 25,470 miles recorded, the vehicle has averaged a remarkably low 439 miles annually, and the gap in MOT history suggests significant periods of inactivity. Such low mileage on a chassis of this vintage is a double-edged mechanical proposition: it preserves interior, paint and brightwork, but it is highly conducive to the classic failures of a stationary Mercedes of this era. Petrol systems left dry for extended periods suffer from carburettor varnish, hardened fuel hoses, perished rubber membranes and seized float chambers, while ignition distributors corrode internally and condenser units deteriorate. Coolant circuits that have stood idle for years are prone to internal corrosion and water pump impeller seizure the moment the car is run hard. Seals, gaskets and flexible components of every description harden and crack with disuse, so oil leaks from the M114 engine, rear axle, and steering box are almost inevitable on recommissioning. Any prospective buyer should treat this car as a recommissioning project rather than a turn-key purchase, regardless of how well it drove at the 2024 MOT. Cold-start behaviour deserves close attention: listen for crank hesitation, fuelling coughs from the carburettor, and any signs of the engine running rich or hunting at idle once warm. Check the underside for oil misting and weep marks from the sump, cam cover, rear main seal and steering box, as these gaskets are unlikely to survive recommissioning dry. On the test drive, pay particular attention to the steering feel: a worn or stiff Mercedes recirculating-ball or worm box on these cars often shows up as slack on the centre or uneven self-centring, and a tired idler arm or drop link will produce clonks over uneven surfaces. The single-leaf rear swing axle is notorious for inducing rear-end hop or tramp over bumps if the trailing arm bushes have perished, and original coil springs often sag after decades, producing the characteristic low-slung tail; push down hard on each corner and check the car rises and settles cleanly without a secondary bounce. Finally, the braking system and chassis structure should be examined with particular care. Given the gaps in testing, the brake master cylinder, servo and flexible hoses have likely been static for many years and should be inspected for perished rubber, spongy pedal feel, and any pulling to one side under firm pedal pressure. Original steel brake pipes, particularly along the chassis outriggers and under the floor, will be at high risk of corrosion and should be probed carefully for scale or pitting. Fuel lines, particularly the rubber sections between the hard line and the carburettor, must be checked for cracking. Inspect the subframe mounting points, jacking points, wheel arches, sills and boot floor for the bubbling paint or perforations that Mercedes of this era are prone to, and confirm the underside is structurally sound. A pre-purchase inspection by a marque specialist familiar with the W114/W108 chassis is strongly advised before committing, given that the MOT history alone cannot reveal the true condition of a car that has stood largely unused for the majority of its life.