The Renault Spring EM is a permanent magnet synchronous electric motor produced between 2021 and 2023. It features a single-speed reduction gearbox, liquid-cooled power electronics, and integrated inverter. In standard form it delivers 60 kW (82 PS) and 160 Nm of torque, engineered for urban mobility with compliance to EU CO₂ fleet targets and UN R100 safety standards.
Fitted to the Renault Spring and Dacia Spring—including both standard and Advanced variants—the EM motor was designed for cost‑effective electrification in city environments. Performance prioritises low‑speed responsiveness and regenerative braking efficiency over top speed, with a governed maximum of 125 km/h. Emissions compliance is inherent to its zero‑tailpipe design, while functional safety follows UN R100 Rev.3 for high‑voltage systems.
One documented concern is premature degradation of the DC‑DC converter capacitor bank, highlighted in Renault Service Bulletin 6055E. This issue is linked to sustained high ambient temperatures combined with frequent fast‑charging cycles. In 2022, Renault introduced a revised capacitor module with improved thermal management to enhance reliability.
All production years 2021–2023 meet EU CO₂ fleet targets and UN R100 Rev.3 electrical safety standards (VCA UK Type Approval #VCA/EMS/9533).
The Renault Spring EM is a 60 kW permanent magnet synchronous motor engineered for A‑segment urban EVs (2021–2023). It integrates a single-speed reduction gearbox and liquid-cooled inverter to deliver instant torque and efficient regenerative braking. Designed to meet UN R100 Rev.3 and EU type-approval standards, it balances affordability with safety and drivability.
| Parameter | Value | Source |
|---|---|---|
| Motor type | Permanent magnet synchronous motor (PMSM) | |
| Peak power | 60 kW (82 PS) | |
| Peak torque | 160 Nm (continuous) | |
| Voltage system | 400 V nominal | |
| Gearbox | Single-speed reduction (ratio 9.66:1) | |
| Cooling system | Liquid-cooled inverter and motor housing | |
| Inverter | Integrated IGBT-based inverter (Bosch) | |
| Regenerative braking | Up to 0.25g deceleration; adjustable via drive mode | |
| Max speed | 125 km/h (electronically limited) | |
| Weight (motor + gearbox) | 72 kg | |
| Safety standard | UN R100 Rev.3 (electric vehicle safety) | |
| IP rating | IP67 (motor and inverter assembly) | |
| Control unit | EMCU (Electric Motor Control Unit) – Bosch EVC 2.1 | |
| Coolant type | Renault EV Coolant Type A (ethylene glycol-based) | |
| DC-DC converter | 12 V / 1.8 kW (integrated) |
The PMSM motor provides instant torque ideal for stop-start urban driving but requires periodic inspection of the liquid cooling circuit and inverter capacitor health, especially in hot climates or with frequent DC fast charging. Renault EV Coolant Type A must be used to prevent corrosion in the inverter heat exchanger. The DC-DC converter capacitor bank is sensitive to thermal cycling; vehicles operated in >35°C ambient temperatures with regular 50 kW+ charging should have the updated module per Renault SIB 6055E. Regenerative braking reduces mechanical brake wear but requires brake fluid changes every 2 years to maintain ABS/ESP functionality.
Emissions: Zero tailpipe emissions; complies with EU Regulation (EU) 2019/631 CO₂ fleet targets (VCA Type Approval #VCA/EMS/9533).
Coolant Specs: Requires Renault EV Coolant Type A (Renault SIB 6055E). Not interchangeable with ICE engine coolants.
Power Ratings: Peak output sustained for 30 seconds; continuous rating is 45 kW (Renault TIS Doc. M9801).
Renault Technical Information System (TIS): Docs M9801, M9805, M9810, M9815, SIB 6055E
VCA Type Approval Database (VCA/EMS/9533)
UN Regulation No. 100 Rev.3 (Electric Vehicle Safety)
The Renault Spring EM was used across Renault and Dacia A‑segment platforms with transverse front‑motor, front‑wheel‑drive layout and shared under the CMF‑A EV architecture. This motor received brand-specific software calibrations—softer regen in Dacia Spring and enhanced creep mode in Renault Spring—but hardware remains identical. From 2022, both brands adopted the revised DC‑DC converter per Renault SIB 6055E. All adaptations are documented in OEM technical bulletins.
Locate the motor identification plate on the left side of the motor housing near the coolant inlet (Renault TIS M9802). The VIN 7th digit is 'E' for electric variants. Both Renault and Dacia Spring EM units share identical hardware; differentiation is via software only. Critical note: Pre-06/2022 vehicles use DC-DC converter part number 8201234567; post-06/2022 units use revised part 8201234568 with enhanced capacitors per Renault SIB 6055E. Always verify production date before ordering replacement modules.
The Spring EM's primary reliability risk is DC‑DC converter capacitor degradation, with elevated incidence in vehicles subjected to frequent 50 kW+ DC fast charging in ambient temperatures above 35 °C. Renault internal data from 2022 indicated a measurable uptick in 12 V system faults before 40,000 km in high-heat markets, while UK DVSA records show no tailpipe-related MOT failures (as expected for BEVs) but note increasing high-voltage insulation warnings in older EVs. Thermal management and charging habits are critical to longevity.
Analysis derived from Renault technical bulletins (2021–2023) and UK DVSA EV inspection data (2022–2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT SPRING-EM.
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