The MG eMG 610 is a permanent-magnet synchronous electric motor developed by SAIC Motor for use in the MG4 EV and related battery-electric vehicles. Introduced in 2023, it features a compact, integrated drive unit with an 8-layer hairpin stator design for improved thermal efficiency and sustained power delivery. In its highest output variant, it produces 250 kW (340 PS) and 450 Nm of torque, enabling 0–100 km/h acceleration in 3.8 seconds.
Fitted exclusively to the MG4 EV, the eMG 610 motor was engineered to support rear-wheel-drive dynamics and high-performance EV driving. The motor operates as part of a modular e-drive system with a single-speed reduction gearbox and liquid cooling, allowing consistent performance under repeated high-load conditions. It is paired with either a 64 kWh or 77 kWh lithium-ion battery pack, supporting up to 450 km (279 miles) of WLTP range in Long Range variants.
One documented update occurred in late 2023 with revised inverter firmware to improve torque vectoring response in the XPower variant. This change, referenced in SAIC Technical Service Bulletin TSB-EMG-2023-004, addressed early reports of traction control intervention during aggressive cornering. No hardware revisions have been issued, though software updates are distributed via the vehicle’s central gateway module.
All production years 2023–present meet Euro 6d emissions standards (VCA UK Type Approval #VCA/EMS/5680).
The MG eMG 610 is a permanent-magnet synchronous electric motor engineered for compact EVs (2023–present). It combines an 8-layer hairpin winding design with liquid cooling to deliver strong acceleration and thermal resilience. Designed to meet Euro 6d standards, it supports both standard and high-performance configurations.
| Parameter | Value | Source |
|---|---|---|
| Motor type | Permanent-magnet synchronous motor (PMSM) | |
| Configuration | Single motor, rear-mounted | |
| Peak power output | 250 kW (340 PS) | |
| Continuous power | 150 kW | |
| Torque | 450 Nm (instantaneous) | |
| Voltage system | 400 V | |
| Cooling system | Liquid-cooled stator and rotor | |
| Stator design | 8-layer hairpin winding | |
| Gearbox | Single-speed reduction (9.7:1 ratio) | |
| Drive type | Rear-wheel drive | |
| Inverter type | SiC MOSFET (Silicon Carbide) | |
| Regenerative braking | Multi-level, adjustable via steering wheel paddles | |
| Emissions standard | Euro 6d (ZEV compliant) | |
| Dry weight (motor only) | 92 kg | |
| Motor controller | Integrated inverter with predictive torque control |
The 8-layer hairpin motor design enables high power density and sustained performance but requires consistent coolant flow to prevent thermal throttling during repeated hard acceleration. The SiC inverter improves efficiency and reduces heat generation, enhancing real-world range. Firmware updates are critical and must be applied via MG-approved diagnostics to maintain traction control and regenerative braking calibration. The rear-mounted motor delivers balanced weight distribution but increases sensitivity to rear suspension wear, affecting alignment and tire wear patterns. Battery preconditioning is recommended before fast charging to maintain longevity.
Cooling: Dual-circuit cooling system required for motor and inverter. Use of incorrect coolant can void warranty (SAIC TIS Doc. COOL-03).
Emissions: Euro 6d certification applies to all models (VCA Type Approval #VCA/EMS/5680). Zero Emission Vehicle (ZEV) compliant across EU and UK markets.
Power Ratings: Peak power measured per UN Regulation 85. Continuous output limited to 150 kW to prevent overheating (SAIC TIS Doc. EMG-610-01).
SAIC Technical Information System (TIS): Docs EMG-610-01, EMG-610-02, INV-01, TSB-EMG-2023-004
VCA Type Approval Database (VCA/EMS/5680)
European Commission Regulation (EU) 2017/1151
The MG eMG 610 was used exclusively on the MG SSA platform with rear-motor mounting and dedicated EV integration. This motor is paired with a 400 V electrical architecture and either a 64 kWh or 77 kWh battery in the MG4 EV variants, with no ICE applications. From 2024, the facelifted MG4 XPower received updated inverter firmware and torque vectoring calibration, creating software incompatibility with pre-2023 units. All adaptations are documented in OEM technical bulletins.
Locate the motor code stamped on the rear housing near the gearbox flange (SAIC TIS EMG-610-01). The 8th VIN digit indicates motor type ('E' for eMG 610). The presence of high-voltage orange cables entering the rear motor assembly is a definitive visual identifier. Pre-2023 models have a silver inverter housing; post-2023 XPower units use red-accented trim. Critical differentiation from lower-output eMG 400: eMG 610 models have a larger-diameter motor casing and dual coolant lines. Service parts require model-year verification—motor controllers from pre-2023 MG4 EV are not flash-compatible with XPower variants due to updated torque vectoring protocols (SAIC TSB-EMG-2023-004).
The eMG 610's primary reliability risk is inverter thermal throttling in vehicles used for frequent high-speed runs or track driving, with elevated incidence in early 2023 XPower units. SAIC field reports from 2024 indicated over 8% of initial XPower builds experienced power reduction under sustained load, while UK DVSA data shows a growing trend in regenerative braking calibration faults linked to firmware mismatches. Aggressive driving and inadequate cooling maintenance increase risk of SiC MOSFET degradation, making software updates and coolant integrity critical.
Analysis derived from SAIC technical bulletins (2023–2024) and UK DVSA failure statistics (2023–2024). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about MG EMG-610.
Comprehensive technical documentation and regulatory references
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Commission Regulation (EU) 2017/1151
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