2018 BMW 730 3.0L Diesel · X 605

The most recent MOT test on 2026-06-24 resulted in a clean pass, with only a single advisory—nearside rear tyre wear approaching the legal limit and exhibiting edge wear, which indicates either excessive lateral acceleration or uneven load distribution. This advisory is not a failure but a warning that requires attention before the tyre reaches the minimum legal tread depth of 1.6mm. The previous MOT history shows a consistent pattern of passing tests with no failures, and while the 2025 test included a minor front windscreen damage advisory, this was unrelated to the vehicle’s structural or mechanical integrity and has not recurred. The absence of repeated defects or critical failures over the past five years suggests a stable maintenance record, though the nearside rear tyre advisory prompts a proactive inspection to prevent premature tyre failure and potential roadside breakdowns. The vehicle’s recorded mileage of 76,493 miles for a 2018 BMW 730 represents a moderate annual usage rate of approximately 9,562 miles per year, which is within the expected range for a car of this age and class. This figure does not suggest excessive wear beyond typical expectations, though the consistent mileage accumulation over several years could imply either regular, moderate use or periods of prolonged stationary status, which may accelerate certain wear patterns. For example, standing for extended periods can lead to brake disc corrosion, caliper binding, or fluid degradation in the cooling and hydraulic systems. Conversely, lower-than-average mileage could indicate underuse, which might mask wear issues that would become apparent under heavier load or dynamic conditions. Either way, the mileage alone does not justify alarm, but it does underscore the need for a thorough inspection to account for both usage-related and calendar-based degradation. Given the clean MOT history aside from the tyre advisory, the prospective buyer should conduct a meticulous physical inspection to address both immediate concerns and age-related vulnerabilities. The nearside rear tyre’s edge wear should be investigated further—this could stem from underinflation, incorrect load distribution, or alignment issues. On a test drive, listen for uneven tyre noise or vibrations, and check for lateral drift or steering pull, which may indicate alignment or suspension misalignment. Additionally, visually inspect the tyre sidewall for cracks or perishing, which can weaken the rubber and compromise safety, particularly in the event of a sudden blowout. Beyond tyres, examine the front and rear brake systems for signs of corrosion on discs and linings, or binding in calipers, which can occur when the vehicle stands for prolonged periods without use. For a vehicle of this age and mileage, the buyer should also focus on fluid condition and service history. Given the BMW’s reputation for demanding maintenance, particularly in the drivetrain and cooling systems, check the oil, coolant, and differential fluids for degradation or contamination. The 12V battery should be tested for capacity and corrosion on terminals, as standing vehicles can lead to sulphation or terminal oxidation. Inspect the exhaust system for leaks or corrosion, particularly around the catalytic converter and mufflers, as these components can degrade over time. Finally, verify that the service book or maintenance records are up to date, especially for the BMW’s recommended 15,000-mile intervals for fluid changes and component inspections. While the MOT history is clean, a comprehensive pre-purchase inspection will ensure that any hidden issues—such as suspension wear, electrical faults, or structural fatigue—are identified before purchase.