Thailand Orders Nationwide EV Dealer Inspections Over Warranties, Disclosures, and Defects

Thailand’s government has ordered nationwide inspections of electric vehicle dealers and showrooms, tightening scrutiny of a market that has grown faster than the regulatory and after-sales infrastructure built to support it. The directive, issued by the Office of the Consumer Protection Board (OCPB), comes as complaints over defective vehicles, misleading range claims and collapsing service networks pile up across the country’s dominant EV segment. Prime Minister’s Office Minister Supamas Isarabhakdi, who oversees the OCPB, has instructed secretary-general Ronnarong Phoolpipat to intensify inspections of EV sales outlets, requiring dealers to display accurate and complete product information in compliance with existing labelling law. Checks will begin in Bangkok and surrounding provinces before rolling out nationwide, and businesses found to be missing required labels or withholding information face legal action. The OCPB is paying particular attention to battery performance disclosures and the terms of battery warranties, an area regulators see as central to the long-term cost and resale value of an EV. The agency is coordinating with the Thai Industrial Standards Institute and the Department of Land Transport to tighten certification and registration disclosure standards, and has been ordered to compile an “EV Labels” e-book covering every model sold in the country, alongside consumer rights guidance and pre-purchase inspection advice. “Complete disclosure is the starting point for fairness in transactions,” Supamas said, framing the crackdown as an extension of existing consumer law rather than a wait for new legislation to take effect. The scrutiny follows a sharp increase in consumer grievances. Between 2024 and 2026, the OCPB logged 556 EV-related complaints, while the Thailand Consumers Council received a further 792, bringing the combined total to 1,348 cases. Authorities say 72.3 percent have already been resolved. Vehicle defects and malfunctions make up the largest share of complaints, at 47.3 percent. Failure to refund booking deposits accounts for 18.2 percent, and sharp post-purchase price cuts — a familiar complaint in a market that has seen repeated rounds of discounting — represent 14.7 percent. Unfulfilled promotional offers make up 13.1 percent, with accidents and delayed repairs adding a further 2.9 percent. Officials say complaints have broadened beyond pricing disputes to cover vehicle safety, spare parts shortages, assembly standards and after-sales service failures more generally. The tightened oversight lands in a market that has expanded on the back of aggressive government incentives and equally aggressive Chinese manufacturer competition. EV sales surged 70 percent in 2025 to roughly 140,000 vehicles, nearly a quarter of all new car sales, according to International Energy Agency figures, and Chinese brands now hold an estimated 70 to 80 percent of Thailand’s EV market, with seven of the top ten sellers being Chinese. That growth has come with strain. Thailand’s EV3.0 and EV3.5 incentive schemes required manufacturers receiving subsidies to offset imports with local production within set deadlines, a commitment some producers have struggled to meet, pushing them toward discounting and, in weaker cases, toward scaling back service networks to manage costs. BYD, the market leader with roughly 40 percent share, has previously faced government scrutiny over discounts of up to 340,000 baht per vehicle, though it was cleared of wrongdoing by a consumer watchdog. Smaller entrants such as Neta have faced separate scrutiny over unmet local production offsets tied to their subsidy commitments. The resulting combination — sharp promotional swings, uneven dealer networks and a wave of new brands with limited track records in the market — is precisely the terrain in which the OCPB’s complaint categories have clustered. The dealer inspections are also a bridge to more structural change. Thailand’s draft Liability for Defective Goods Act, commonly called the Lemon Law, passed its first House reading on 24 June 2026 by a unanimous 420–0 vote and is now with a 24-member special committee. The bill would reverse the burden of proof for defective goods, requiring sellers to demonstrate a product was not defective at delivery rather than requiring buyers to prove it was. Automobiles would carry a one-year statutory presumption period, with repairs capped at 90 days, and strict liability provisions specifically for cars and motorcycles. The bill, the first piece of legislation submitted to parliament by Prime Minister Anutin Charnvirakul’s government, still needs second and third readings, Senate passage and publication in the Royal Gazette before taking effect. Until then, the OCPB says it will lean on existing consumer protection law governing product labelling and advertising — which is effectively what the current inspection drive represents. For Chinese manufacturers that have built Thailand into their largest overseas production base — including BYD’s Rayong factory and the more than $4.1 billion in EV investment pledges the country has attracted across 198 projects — the message from Bangkok is not hostile to the sector itself. Officials continue to frame EVs as central to the kingdom’s “30@30” production strategy and energy security goals. But the inspection drive, paired with the Lemon Law working through committee, signals that the era of unchecked discount-driven expansion is giving way to a phase where warranty terms, after-sales capacity and disclosure standards will be enforced rather than assumed. Dealers and manufacturers with thin service networks or opaque battery warranty terms are likely to face the most immediate pressure as inspections expand beyond Bangkok in the coming months.