EV and Hybrid Servicing: What NZ Workshops Need to Know About Insurance

New Zealand's vehicle fleet is changing rapidly. Hybrid and electric vehicle registrations grew 13.78% CAGR as of 2025, and the influx of affordable Japanese domestic market (JDM) hybrids — Nissan Leafs, Mitsubishi Outlander PHEVs, Toyota hybrids — has made electric drive systems commonplace in NZ workshops. But servicing EVs and hybrids creates risks that standard motor trade insurance may not automatically cover.

How EVs Change the Risk Profile

Traditional internal combustion engine vehicles involve fuel, heat, and mechanical complexity. EVs and hybrids add a new dimension: high-voltage electrical systems.

High-voltage traction batteries in EVs typically operate at 200–800 volts — enough to cause serious or fatal electrocution. Hybrid systems, while lower voltage in some configurations, still present significant risks. For workshops, this creates:

New liability exposures:

Incorrect diagnosis or servicing of high-voltage systems

Battery damage during service causing thermal runaway (fire risk)

Failure to isolate high-voltage systems before working on adjacent components

EV charging equipment malfunction causing fire or shock

New health and safety obligations:

Staff working on HV systems must be appropriately trained

Specific personal protective equipment (PPE) is required

Workshop procedures must address HV isolation and testing

Some insurers require documented HV training for EV servicing cover

Does Standard Motor Trade Insurance Cover EV Work?

The short answer: it depends on your specific policy, and you should not assume it does.

Many standard motor trade policies were written before EVs became mainstream. They may:

Not specifically include or exclude EV/HV work (creating uncertainty at claim time)

Exclude electrical work above certain voltages

Require specific endorsements for EV servicing

Impose conditions around staff training and qualifications

The safest approach is to explicitly disclose to your insurer that you service EVs or hybrids and confirm in writing that your policy covers this work. If your current policy does not, ask your broker to arrange an EV endorsement or a specialist policy.

Thermal Runaway: The Hidden Fire Risk

Thermal runaway in lithium-ion batteries is one of the most serious risks in EV servicing. It can be triggered by:

Physical damage to the battery during service

Incorrect charging procedures

Overheating during certain diagnostic procedures

Manufacturing defects in cells (pre-existing)

A thermal runaway event produces extreme heat (up to 1,000°C in some cases), toxic gases, and can cause fires that spread to the workshop building and other vehicles. Standard fire suppression systems are often ineffective on lithium-ion battery fires.

Insurance implications:

Customer vehicle cover must include EV battery fire as a covered peril

Workshop property insurance should be reviewed for EV fire risk

Public liability should cover consequential damage from EV fires on your premises

The Clean Car Standard and Insurance

NZ's Clean Car Standard continues to incentivise importation of EVs and hybrids. As the fleet electrifies, dealers and workshops that cannot service EVs will lose market share. But expanding into EV servicing without appropriate insurance creates unacceptable risk.

For workshops considering EV servicing:

1. Train at least one technician to Level 2 Hybrid/EV servicing standards (MITO or equivalent)

2. Invest in appropriate HV safety equipment (insulating gloves, LV test equipment)

3. Update your insurance disclosure to include EV work

4. Review your workshop's fire suppression capabilities

For EV-Specialist Dealers

Dealers stocking and selling EVs face additional considerations:

Stock cover for EVs should explicitly include battery-related damage

Product liability must cover defects in EV systems sold

Charging infrastructure on your premises adds a new liability exposure

Test drives of EVs create additional road risk considerations

Getting the Right EV Cover

Our motor trade insurance advisers are experienced in arranging cover for NZ workshops servicing EVs and hybrids. We can ensure your policy explicitly covers:

EV and hybrid servicing work

Thermal runaway events on your premises

Customer EV batteries while in your care

High-voltage system liability