1984 BMW 735 3.4L Petrol · 779 BMW

The 1984 BMW 735i presents a stable and improving maintenance trend, culminating in a clean pass on 25 February 2026 at 153,899 miles with zero defects recorded. That result is a marked contrast to the failure logged on 23 August 2022 at 153,802 miles, when the tester flagged an offside front headlamp aim too low and a defective offside front seat belt retracting mechanism. Both items were evidently rectified before the next test, and no further advisories or failures have since appeared. The record suggests a period of neglect around 2022 followed by attentive remediation, leaving the vehicle in its strongest documented condition in recent years. The mileage pattern tells a story of very light use over an extended lifespan. Between the 2016 test at 150,329 miles and the 2026 test at 153,899 miles, the car covered just 3,570 miles across a full decade, averaging under 400 miles per year. A notable gap exists between the March 2018 test at 151,588 miles and the August 2022 failure at 153,802 miles, during which 2,214 miles were added over more than four years. Such low annual accumulation points to prolonged periods of standing, which carries its own risks despite the favourable odometer reading. Buyers should focus their inspection on components that deteriorate with age and inactivity rather than mileage. The 2022 seat belt retractor defect hints at possible internal corrosion or spring fatigue in the belt assembly; both front belts should be fully extended and retracted to check for consistent, smooth operation. The headlamp aim fault, now resolved, warrants a closer look at the headlamp levelling mechanism and surrounding front-end structure for signs of impact damage or corrosion that could throw the aim out again. Given the car's 42-year age, structural rust in the sills, subframes, and jacking points remains a primary concern, even if the MOT tester has not flagged it. Dry-stored classics frequently suffer from perished rubber bushes, deteriorated brake hoses, seized calipers, and stale fuel system components after long stand times. A thorough inspection of the braking system, cooling hoses, and suspension bushes is essential, as these items degrade regardless of mileage. The clean 2026 result is encouraging, but it cannot substitute for a hands-on mechanical assessment of a vehicle that has spent most of its life doing very little.