Some Mazda model have a capacitor (i-ELOOP) as an energy regeneration system on the deceleration of the vehicle, and the electricity remains in the capacitor depending on the condition of the vehicle. When an end of life vehicle is scrapped in that condition, the electricity stored in the capacitor could cause an ignition or a fire in shredding the vehicle.
Therefore, please always discharge the capacitor when a vehicle is dismantled.
Also, please read the capacitor disposal manual, and discharge the capacitor safely and properly.
Procedures of discharging the Capacitor