2012 Nissan Leaf Electric · 515 AOT

Early 24kWh cars, especially pre-2013 Japanese-built examples, can lose a substantial chunk of usable range. The passive air cooling means heat from repeated DC rapid charging or motorway speeds accelerates capacity loss. As capacity drops, winter range can fall below 45 miles, requiring refurbished cell modules or an outright pack replacement to restore usability.

The Power Delivery Module (PDM) houses the DC-DC converter, onboard AC charger, and high-voltage junction box. If internal electronic components or solder joints fail within the PDM, the 12V auxiliary battery ceases charging from the traction pack, resulting in multiple spurious CAN-bus error codes, AC charging refusal, or inability to shift out of Park.

Because the Leaf relies heavily on regenerative braking via the electric motor to decelerate, the hydraulic friction brakes are underutilised in typical UK urban and suburban driving. Exposed to wet road grit and winter salt, the cast-iron brake discs develop deep surface rust, pitting, and lip ridges, while calliper slider pins corrode and seize. This is one of the leading causes of MOT test failure on first-generation Leafs.