2021 BMW I3ELECTRICITY

The BMW i3 presents a clean bill of health on paper. The most recent MOT, conducted on 1 June 2026 at 14,939 miles, passed with zero defects recorded. Looking back through the history, the maintenance trend is entirely stable. The vehicle has passed every single test on record — 17 May 2024 at 10,870 miles, 20 August 2025 at 14,223 miles, and the June 2026 test — with no advisories or failures flagged at any point. For an electric vehicle, this indicates the high-voltage system, braking components, and structural integrity have remained consistently sound across all inspections. The mileage profile tells a specific story. At roughly 2,988 miles per year, this i3 has seen exceptionally light use. The gap between the May 2024 test and the August 2025 test shows only 3,353 miles covered in over a year, suggesting prolonged stationary periods. While low mileage limits mechanical wear, extended sitting poses its own risks. Tyres can develop flat spots and sidewall cracking from age rather than tread wear. The 12-volt auxiliary battery, common on BMW i3s, is prone to deep discharge if the car sits unused for weeks. Brake discs may surface-corrode without regular use, though the clean MOT suggests this has not yet reached a critical threshold. A buyer should still inspect the physical condition of consumables closely. Check the tyre date codes against the tread depth; rubber older than six years warrants replacement regardless of remaining tread. Examine the underside for any signs of corrosion on suspension mounting points or subframe components, as salt exposure during stationary periods can still cause localised rust. Test the regenerative braking transition and the hydraulic brake pedal feel to confirm the calipers are not beginning to stick despite the clean emissions and brake checks on record. The i3's carbon-fibre passenger cell is structurally robust, but the aluminium drive module and rear suspension trailing arms should be inspected for stone damage or corrosion, particularly if the car has sat on uneven ground. The clean MOT history is reassuring, but a pre-purchase inspection focusing on age-related deterioration rather than mileage wear remains prudent.