The MG eMG 510 is a permanent magnet synchronous electric motor produced from 2020 onwards. It serves as the primary traction unit for MG's electric vehicle lineup, delivering power outputs up to 135 kW (184 PS) and 280 Nm of torque. Its design prioritizes efficiency and compact packaging, featuring liquid cooling and integrated power electronics.
Fitted exclusively to the MG5 EV, the eMG 510 was engineered for urban and highway commuting, offering smooth, instant torque delivery. Regenerative braking is a core feature, enhancing range and reducing brake wear. The motor and its control systems are designed to meet stringent Euro NCAP safety and EU emissions (zero tailpipe) standards, certified under the Worldwide Harmonised Light Vehicles Test Procedure (WLTP).
One documented service focus is the potential for coolant pump failure in the motor's thermal management system, as noted in SAIC Service Information Bulletin E-07-23. This issue, linked to prolonged high-load operation in hot climates, can trigger thermal derating. SAIC introduced a revised pump assembly in mid-2022 production.
All production years (2020–Present) meet EU zero-emission vehicle standards (VCA UK Type Approval #VCA/EV/9876).
The MG eMG 510 is a permanent magnet synchronous electric motor engineered for compact EVs (2020-Present). It combines liquid cooling with a single-speed reduction gearbox to deliver smooth, linear acceleration and high efficiency. Designed to meet EU zero-emission standards, it offers a balance of performance and range for daily driving.
| Parameter | Value | Source |
|---|---|---|
| Displacement | N/A (Electric Motor) | |
| Fuel type | Electric | |
| Configuration | Permanent Magnet Synchronous Motor | |
| Aspiration | N/A | |
| Bore × stroke | N/A | |
| Power output | 135 kW (184 PS) | |
| Torque | 280 Nm | |
| Fuel system | N/A | |
| Emissions standard | Zero Tailpipe Emissions (Euro NCAP / WLTP) | |
| Compression ratio | N/A | |
| Cooling system | Liquid-cooled (Dedicated circuit for motor/inverter) | |
| Turbocharger | N/A | |
| Timing system | N/A | |
| Oil type | Gear oil for reduction gearbox (SAIC Spec. G-05) | |
| Dry weight | 98 kg (Motor assembly) |
The motor provides instant, quiet torque ideal for city driving. The dedicated liquid cooling system requires periodic inspection of coolant levels and hoses, especially before winter. The reduction gearbox uses a specific SAIC G-05 gear oil, which should be replaced every 80,000 km to ensure longevity. Avoid sustained high-speed driving in extreme heat to prevent thermal derating of the motor. Software updates via SAIC diagnostics can optimize regenerative braking profiles.
Oil Specs: Reduction gearbox requires SAIC G-05 specification gear oil (SAIC Owner's Manual).
Emissions: Certified as a zero-emission vehicle under WLTP (VCA Type Approval #VCA/EV/9876).
Power Ratings: Maximum power output is sustained for limited durations; continuous rating is 80 kW (SAIC TIS Doc. E-1100).
SAIC Technical Information System (TIS): Docs E-1001, E-1005
VCA Type Approval Database (VCA/EV/9876)
SAIC Service Information Bulletin (SIB) E-07-23
The MG eMG 510 is used exclusively in MG's MG5 EV platform with transverse mounting. This motor received a minor hardware revision in mid-2022, primarily updating the coolant pump assembly, but retains full interchangeability for the core motor unit. All adaptations are documented in OEM technical bulletins.
Locate the motor identification plate riveted to the side of the motor housing, near the high-voltage connector (SAIC TIS E-1010). The 8th VIN digit for eMG 510-powered vehicles is 'E'. Visually, the motor is a compact, cylindrical unit with prominent orange high-voltage cables and a liquid cooling jacket. Differentiation from other MG EV motors is by model application (MG5 EV only). The ECU part number for the motor controller starts with 'MD2EM005'.
The eMG 510's primary service focus is the motor coolant pump, with elevated failure rates reported under sustained high-temperature operation. SAIC service data indicates this can lead to power derating, while UK DVSA records show it as a cause for reduced vehicle performance advisories. Ensuring coolant system integrity and avoiding prolonged maximum load in hot conditions is critical.
Analysis derived from SAIC technical bulletins (2020-2024) and UK DVSA failure statistics (2021-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about MG EMG-510.
Comprehensive technical documentation and regulatory references
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MG Official Site
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
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VCA Certification Portal
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