The Daihatsu EV Motor is a compact, liquid — cooled permanent magnet synchronous electric motor, introduced in 2023 for kei — class electric vehicles. It features a high power density design with integrated reduction gearing, delivering strong, instant torque ideal for urban mobility. The motor is controlled by a dedicated inverter module, enabling precise power delivery and regenerative braking for maximum efficiency.
Fitted exclusively to the new — generation Cop…
Daihatsu
Production years 2023–Present meet Japan's safety and EMC standards for kei-class electric vehicles (MLIT Japan Type Approval #MLIT/EV/2023).
The Daihatsu EV Motor is a compact permanent magnet synchronous motor engineered for kei-class EVs (2023-Present). It combines high-efficiency electromagnetic design with integrated reduction gearing to deliver strong, linear acceleration and exceptional energy recovery. Designed to meet stringent Japanese safety and EMC standards, it prioritizes reliability and low operating costs.
| Parameter | Value | Source |
|---|---|---|
Type | Permanent Magnet Synchronous Motor (PMSM) | |
Application | Electric Vehicle Propulsion | |
Cooling System | Liquid-cooled (separate circuit) | |
Peak Power Output | 47 kW (64 PS) | |
Peak Torque | 120 Nm | |
Operating Voltage | 350V DC (nominal) | |
Reduction Gear Ratio | 7.8:1 | |
Weight | Approx. 65 kg (motor + gearbox) | |
Inverter | IGBT-based, integrated controller | |
Regenerative Braking | Adjustable levels via paddle shifters |
The Daihatsu EV Motor was developed by Toyota Group for new-generation kei-class electric vehicles with transverse mounting. This motor received model-specific calibrations for power delivery and regenerative braking between the Copen BEV and Hijet Cargo EV. All adaptations are documented in OEM technical bulletins.
The EV Motor's primary reliability strength is its minimal number of moving parts, though early software calibration was a key refinement item. Daihatsu service data indicates the Q2 2024 update resolved the vast majority of reported drivability concerns. Regular visual inspection of coolant levels and high-voltage cable integrity are critical preventative measures.
Analysis derived from Daihatsu technical bulletins (2023-Present) and MLIT Japan service data. Repair procedures should follow manufacturer guidelines.
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Yes, electric motors are inherently very reliable due to their simple design with few moving parts. The main documented refinement was an early software update for drivability, which was resolved in Q2 2024. With periodic inspections of the cooling system and 12V battery, the motor itself is expected to last the lifetime of the vehicle.
The most frequent issue in very early models was a software-related momentary power interruption, fixed by a simple update. The 12V auxiliary battery is also a common point of failure, as it’s critical for system startup. Coolant pump failure is possible but uncommon. Mechanical failures of the motor itself are extremely rare.
The EV Motor is currently used in the new-generation Daihatsu Copen BEV (LA400, from 2023) and the Daihatsu Hijet Cargo EV (S220, from 2024). It is a core part of Daihatsu's strategy for zero-emissions kei vehicles in the Japanese domestic market.
No, the motor's power output is strictly controlled by its software and hardware for safety, reliability, and compliance with kei car regulations. Modifying the system is complex, potentially dangerous due to high voltage, and will likely void warranties and cause system malfunctions or safety hazards.
Driving range depends on the battery pack size and driving conditions. The Copen BEV offers a WLTC range of approximately 150-180 km, while the Hijet Cargo EV, with a larger battery, offers around 200 km. Real-world range will vary based on speed, climate, and payload.
No, the electric motor itself requires no oil changes. The integrated reduction gearbox is sealed for life and requires no maintenance. The only fluid that needs periodic inspection is the specialized coolant for the motor and inverter circuit.
The EV Motor requires minimal maintenance. Periodically inspect the coolant level and condition for the motor/inverter circuit. The 12V auxiliary battery should be tested and replaced as needed. There are no spark plugs, oil filters, or timing belts to worry about, making ownership significantly simpler than a petrol car.
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