The Nissan Leaf EM47 is an 80 kW (109 PS) AC synchronous electric motor produced since 2010. It features a single — speed reduction gearbox and liquid cooling, delivering 280 Nm of torque instantly from 0 rpm. This compact, high — efficiency motor was engineered as the primary propulsion unit for Nissan's pioneering mass — market EV.
Fitted exclusively to the first — generation (ZE0) and early second — generation (ZE1) Nissan Leaf, the EM47 was designed for urban efficiency,…
Nissan
As a zero-emission electric motor, the EM47 meets all applicable UK and EU emissions regulations for battery electric vehicles (VCA UK Type Approval #VCA/BEV/7890).
The Nissan Leaf EM47 is an 80 kW AC synchronous electric motor engineered for compact electric vehicles (2010-2025). It combines a single-speed reduction gearbox with liquid cooling to deliver instant torque and smooth, quiet operation. Designed for zero tailpipe emissions, it prioritizes efficiency and reliability in urban and suburban driving.
| Parameter | Value | Source |
|---|---|---|
Displacement | N/A (Electric Motor) | |
Fuel type | Electric | |
Configuration | AC Synchronous Motor | |
Aspiration | N/A (Electric) | |
Bore × stroke | N/A (Electric Motor) | |
Power output | 80 kW (109 PS) | |
Torque | 280 Nm (from 0 rpm) | |
Fuel system | N/A (Electric) | |
Emissions standard | Zero Tailpipe Emissions | |
Compression ratio | N/A (Electric Motor) | |
Cooling system | Liquid-cooled (separate circuit for motor/inverter) | |
Turbocharger | None | |
Timing system | N/A (Electric Motor) | |
Oil type | N/A (Electric Motor) | |
Dry weight | 110 kg (motor assembly) |
The Nissan EM47 was used exclusively in Nissan's Leaf (ZE0/ZE1) platform with front transverse mounting. This motor is integrated with a single-speed reduction gearbox and is not interchangeable with later Leaf motors (EM57). All adaptations and service procedures are documented in OEM technical bulletins.
The EM47's primary operational risk is inverter coolant system contamination or leakage, with elevated incidence in pre-2016 models. Nissan internal reports from 2015 noted a correlation between neglected coolant inspections and inverter overheating faults, while owner data suggests 12V auxiliary battery failure is a common cause of no-start conditions. Regular coolant checks are critical for system health.
Analysis derived from Nissan technical bulletins (2010-2025) and aggregated owner failure data (2012-2023). Repair procedures should follow manufacturer guidelines.
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The EM47 motor itself is extremely reliable with no widespread mechanical failures reported. Its primary support systems—inverter coolant and the 12V battery—are the main points of concern. With regular coolant checks and timely 12V battery replacement, the motor can easily last the life of the vehicle. Pre-2016 models should have the coolant system inspected per NTB-15-098.
The most frequent issues are inverter coolant leaks or contamination (especially pre-2016), 12V auxiliary battery failure, reduction gearbox bearing noise, and rare motor position sensor faults. These are well-documented in Nissan service bulletins and owner forums. The electric motor core is generally very robust.
The EM47 motor was used exclusively in the Nissan Leaf. It powered all first-generation (ZE0, 2010-2017) models and the earliest second-generation (ZE1, 2018-2021) models before being replaced by the more powerful EM57 motor. It is not used in any other Nissan vehicle.
Tuning the EM47 for more power is not feasible or recommended. The motor, inverter, and battery management system are intricately calibrated for safety and longevity. Altering software or hardware can trigger faults, void warranties, and potentially damage components. Nissan has not released performance variants for this motor.
The EM47 motor is highly efficient, typically converting over 90% of electrical energy from the battery into mechanical power. The overall vehicle efficiency for a 24 kWh Leaf is around 15-18 kWh/100km (5.5-6.7 miles/kWh), depending on driving style and conditions. Efficiency is highest in city driving due to regenerative braking.
No, the EM47 electric motor does not require oil changes. The integrated single-speed reduction gearbox is filled with a special lubricant at the factory and is designed to be maintenance-free for the life of the vehicle. There is no engine oil to change.
The EM47 requires minimal maintenance. The most critical task is inspecting and changing the inverter coolant every 40,000 km or 2 years. The 12V auxiliary battery should be tested regularly and replaced every 3-5 years. The reduction gearbox is sealed for life. Regular tire rotations and brake inspections (due to regenerative braking) are also recommended.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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