New Energy Vehicle Periodic Inspection

New Energy Vehicle (NEV) Periodic Inspection refers to the mandatory statutory technical safety inspection carried out on registered new energy vehicles at stipulated intervals. On 1 March 2025, China's first dedicated NEV safety inspection standard, the "Code of Practice for Operational Safety Performance Inspection of New Energy Vehicles" (GB/T 44500—2024), officially came into force. Unlike conventional internal combustion engine (ICE) vehicle inspections that focus primarily on the engine, exhaust emissions, and braking systems, the NEV inspection regime places critical core components such as the traction battery and electronic control systems at the forefront of its assessment.

Scope of Application

The "Code of Practice for Operational Safety Performance Inspection of New Energy Vehicles" applies to the roadworthiness and operational safety inspections of in-use battery electric vehicles (BEVs) and plug-in hybrid electric vehicles (PHEVs, including range-extended electric vehicles / REEVs), whilst other types of in-use new energy vehicles may reference these guidelines. New energy vehicles registered before 1 March 2019 will undergo their first inspection under these new regulations.

Inspection Intervals

Inspection intervals for new energy vehicles remain aligned with conventional fuel-powered vehicles, adopting the "6-year inspection exemption for new vehicles" framework:

• Within 10 years: Physical inspections at certified testing centres are only required in the 6th year and 10th year; during the interim years, owners only need to apply for a digital inspection certificate once every two years via the "Traffic Management 12123" mobile app

• Above 10 years: Annual physical inspection required once every year

It should be highlighted that "inspection exemption" refers solely to an exemption from physical inspection lane testing; vehicle owners are still required to obtain their digital inspection certificates within the stipulated timeframe.

Core Inspection Items

The new standard establishes a total of 12 inspection items across 4 key categories: traction battery safety, drive motor safety, electronic control system safety, and electrical safety.

Mandatory inspection items include:

Traction battery safe charging test. Inspection centres utilise DC fast chargers with an output of ≥60kW to continuously charge the vehicle for over 3 minutes, assessing whether battery temperature and voltage levels remain normal. The maximum charging temperature must not exceed 65°C for lithium iron phosphate (LFP) batteries and 60°C for ternary lithium-ion batteries.

Electrical safety inspection. This comprises insulation resistance testing of the charging inlet and equipotential bonding checks, deploying dedicated diagnostic equipment to detect potential electrical leakage across the charging port and vehicle body.

Electronic control system temperature check (optional). The operating temperature of the drive motor must not exceed 175°C, whilst the motor controller and DC-DC converter must stay below 95°C.

Additional inspections for commercial vehicles. Commercial fleet vehicles, including e-hailing cars, buses, and lorries, are subject to an additional traction battery safe discharge test—running on a chassis dynamometer at 40km/h for 5 minutes to monitor battery discharge temperature and voltage stability.

Differences Between Pure Electric and PHEV/REEV

Battery electric vehicles (BEVs) are primarily assessed on high-voltage "three-electric" components (battery, motor, and electronic control), covering battery charging and electrical safety, with no tailpipe emissions testing required.

Plug-in hybrid electric vehicles (including range-extended EVs) undergo a "dual assessment": they must clear the same battery safety tests as BEVs, while also passing mandatory tailpipe emission tests conducted to identical ICE vehicle standards.

Regarding battery State of Health (SOH), the new regulations currently do not treat capacity degradation as an outright failure criterion. The battery capacity retention rate is logged merely as a "non-disqualifying" parameter. As long as the vehicle arrives for inspection with a State of Charge (SOC) between 30% and 90% and exhibits no warning faults across the three-electric systems, it will generally pass the inspection.

Impact and Industry Significance

For vehicle owners, the new regulations provide early warning against battery thermal runaway risks, significantly lowering spontaneous fire incidents while establishing an objective benchmark for residual vehicle valuation and insurance underwriting.

For carmakers, the accumulation of periodic roadworthiness data will compel manufacturers to optimise battery packaging and power electronics management, encouraging greater R&D investments in battery safety, thermal stability, and long-term reliability.

For the used car market, certified battery inspection reports will become a crucial determinant of used vehicle values. Industry data reveals that models retaining an SOH above 80% can fetch a 15% to 20% price premium over those dipping below 70%.