Does China's EV Export Surge Raise Fire Risk?

China shipped roughly 2.6 million new-energy vehicles (NEVs) overseas in 2025 — about double 2024 — and a growing share now sails on carmakers' own carriers. The fire question is not whether a new Chinese EV is uniquely dangerous; no factory-new EV has been proven to start a car-carrier fire. It is that export volume, EV density per sailing, and long deep-sea routes are rising together, and aggregate exposure rises with them.

How big is the surge?

Large, and weighted toward the longest routes. China's NEV exports reached about 2.6 million units in 2025, roughly a 100% year-on-year jump, with battery-electric exports near 1.65 million (up ~67%) and plug-in hybrids around 969,000 (up ~230%), according to industry data. The top destinations — Mexico, Russia and the UAE — are deep-sea or long-haul markets, which means more EVs spending more days at sea per unit shipped, not fewer.

Why volume is the risk, not defect

Because exposure is the product of frequency and consequence, and both are climbing. Frequency: more EVs across more sailings raises the chance any given voyage carries a unit that fails — from damage, not necessarily manufacture. Consequence: a lithium-ion battery fire can exceed 1,000°C against roughly 600°C for a conventional car, so the cost of a single event on a packed deck is higher. The trade is right that no factory-new EV has been shown to cause a RoRo fire — but risk is exposure times severity, and the export surge pushes the exposure term up regardless of where ignition originates.

Carmakers now own the ships

The surge changed who carries the cargo. BYD completed an eight-vessel car-carrier fleet in September 2025 — an investment of roughly $687 million, more than 1 million cars per year of capacity, with ships of 7,000 to 9,200 CEU. The largest, BYD Shenzhen, holds 9,200 standard car spaces across 16 decks; all run LNG dual-fuel propulsion, and several were ordered through Zodiac Maritime and chartered to BYD. An OEM-operated fleet concentrates a single maker's EVs onto dedicated decks and pairs a high EV fraction with dual-fuel machinery spaces — two risk factors stacked on one hull.

What the casualty record already shows

The most-cited recent loss sat squarely on a China export route. The PCTC Morning Midas reported smoke from an EV deck in June 2025 while carrying around 3,000 vehicles — roughly 800 of them electric or hybrid — from China to Mexico; the crew evacuated safely and the ship burned and sank. Its proximate cause was never formally established, and the public narrative collapsed back to "EV fire" anyway. Notably, the vessel was managed by Zodiac Maritime, the same manager behind several of BYD's chartered carriers — a reminder that the export build-out and the casualty record run through the same operators.

What it changes for owners and underwriters

It moves EV fraction from a footnote to a rated variable. Underwriters increasingly price the percentage of EV cargo and the route length behind a voyage, and OEM-operated fleets internalise that exposure — a carmaker running its own ships is, in effect, self-insuring its own battery risk at sea. In every version, the mitigation is the same: early, auditable per-vehicle detection that shortens the interval between a fault and a response, before a high-density EV deck becomes a constructive total loss.

Sources

• 1. China Association of Automobile Manufacturers (CAAM) / CnEVPost / Global Times — China 2025 NEV export figures (~2.6M NEVs, BEV ~1.65M, PHEV ~969k; top markets Mexico, Russia, UAE).
• 2. The Maritime Executive / Offshore Energy / CnEVPost — BYD eight-vessel car-carrier fleet (~$687M, >1M cars/yr, 7,000–9,200 CEU, BYD Shenzhen 9,200 CEU/16 decks, LNG dual-fuel, completed Sept 2025; charters via Zodiac Maritime).
• 3. US Coast Guard / Lloyd's List / TradeWinds — Morning Midas casualty (June 2025; ~3,000 vehicles, ~800 EV/hybrid, China→Mexico; vessel burned and sank).
• 4. IUMI — "Risk mitigation for the safe ocean and short-sea carriage of electric vehicles" (Sept 2025): EV peak temperatures vs conventional vehicles; loss-prevention guidance.
• 5. [VERIFY: 2025 NEV export totals vary by source and definition (NEV vs BEV-only, all-brand vs Chinese-brand) — confirm the exact figure and basis against the CAAM primary before citing a single number.]