2021 BMW 330E SE PRO Auto 2.0L Hybrid electric (clean) · WA21 TWW

The vehicle most recently passed its MOT on 16 July 2026 with a single advisory recorded against the offside rear tyre, noted as being worn close to the legal limit and worn on edge with a remaining tread depth of 2.2mm in the centre. Beyond this advisory, the test history is notably clean, with the previous three tests on 3 July 2025, 14 February 2025, and 20 March 2024 all passing without any advisories or defects. The maintenance trend therefore appears broadly stable and consistent rather than deteriorating, with no recurring or repeat advisories across the inspection record. The solitary advisory is a typical wear-related item rather than a structural or mechanical concern, and it should have been addressed by replacement prior to any further mileage being undertaken. With 77,187 miles recorded over approximately five years, this 330e is covering around 15,400 miles annually, which sits well above the national average of roughly 7,000 to 8,000 miles per year for a vehicle of this type. Higher annual mileage of this nature accelerates wear on consumable items including brake pads and discs, tyres, suspension components, and the 12-volt auxiliary battery, alongside increasing demands on the plug-in hybrid powertrain. The MOT history shows no significant gaps in testing, which suggests the vehicle has been in regular use rather than left standing for extended periods, reducing the likelihood of issues such as seized brake calipers, deteriorated exhaust mountings, or perished rubber components from inactivity. Given the higher mileage profile and the advisory on the rear tyre, a prospective buyer should undertake a thorough physical inspection and test drive. The offside rear tyre should already have been replaced given its sub-3mm central reading, and any replacement should be inspected to confirm correct fitment, matching brand and tread pattern, and absence of sidewall damage. During a road test, listen carefully for suspension knocks or clonks over uneven surfaces, which on a high-mileage 3 Series often indicate worn front lower control arm bushes, anti-roll bar drop links, or rear coil spring and damper assemblies. Uneven tyre wear across the axle set, particularly inner or outer shoulder wear, can point to worn suspension bushes or alignment irregularities, and any pulling under braking or through corners should prompt a brake disc inspection for lipping or warping, the latter presenting as steering wheel vibration or brake pedal shudder. As a five-year-old plug-in hybrid, this 330e also requires attention to age-related service items that MOT testing does not cover. The 12-volt auxiliary battery, which powers the hybrid control electronics and is separate from the high-voltage traction battery, commonly fails between four and six years of age and should be load-tested prior to commitment. Brake fluid absorbs moisture over time and should have been renewed on a calendar basis regardless of mileage, typically every two years, so the service book should be examined for confirmation. Likewise, the plug-in hybrid system's coolant, high-voltage battery cooling circuit, transmission fluid, and spark plugs on the petrol engine side all have time-based replacement intervals that a buyer should verify through documented service history. On start-up from cold, any unusual engine noise, warning lights relating to the hybrid system, or a failure of the eDrive modes to engage should be investigated before purchase, as hybrid system repairs can be disproportionately costly relative to conventional drivetrain components.