2004 BMW 3 Series 2.2L Petrol · LL04 KBZ

The most recent MOT, conducted on 17 August 2026, was passed with a single advisory noting that an under‑tray has been fitted. Over the past nine years the record shows a mixture of minor advisories and one serious failure in December 2021 when the rear brake disc was deemed dangerous and the rear pads were below the minimum thickness. That dangerous defect was evidently rectified, as the same year a subsequent test recorded a pass. Since then the pattern has been a gradual accumulation of wear‑related advisories – tyre edge wear, deteriorating anti‑roll‑bar dust covers, slight shock absorber leakage and rear‑suspension corrosion – rather than any new catastrophic failures. The overall maintenance trend can be described as stable but with increasing age‑related wear that is being monitored rather than ignored. At 99,480 mi the car averages roughly 4,500 mi per annum, which is low for a 2004 model. Such modest annual mileage often points to periods of limited use or long intervals of storage. Low mileage reduces cumulative stress on the engine, gearbox and drivetrain, yet it does not protect components that degrade with time, such as rubber bushings, seals, tyre rubber and battery plates. The relatively low mileage also suggests that the original tyres have likely been replaced at least once, but the age of the current set may be considerable, especially given the repeated advisories about tyre edge wear and perishing. Potential buyers should therefore treat the mileage figure as a partial indicator of wear and focus on calendar‑based deterioration. A thorough visual and tactile inspection of all four tyres is essential. Check the DOT code for the manufacture date; any tyre older than six years should be regarded with suspicion even if tread depth appears adequate. Look for side‑wall cracking, dry rot and uneven wear patterns that could indicate mis‑alignment or worn suspension components. During a test drive listen for any clunk or squeak when passing over bumps, which may reveal deteriorated anti‑roll‑bar dust covers, loose ball‑joint boots or leaking front shock absorbers. Pay particular attention to the rear brakes – feel for any pulsation or shudder under firm braking, and verify that the disc surfaces are free of deep scoring or excessive rust, as the previous dangerous failure suggests a history of rear‑brake wear that may recur if not fully replaced. Inspect the under‑tray for secure mounting and any signs of corrosion that could affect the chassis or exhaust routing. Finally, evaluate the condition of time‑sensitive items that are not captured by mileage alone. Test the 12 V battery voltage and, if possible, its cranking amperage, as a battery left idle for extended periods can lose capacity. Examine all visible fluid reservoirs – coolant, brake fluid, power‑steering and gearbox oil – for correct level and any discoloration that would indicate the need for a change. Look for corrosion on the rear suspension sub‑frame, brake lines and mounting points, especially where the MOT advisory noted “rear suspension component corroded but not seriously weakened”. Confirm that the service book shows regular oil changes and that any major items such as brake discs, pads or shock absorbers have been replaced in line with the advisories. A buyer who verifies these points will be well placed to judge whether the car’s low mileage truly translates into a reliable, road‑worthy purchase.