Fewer parts

Thailand has spent forty years becoming the Detroit of Asia — the assembly and parts hub of Southeast Asia, built largely by Japanese manufacturers, exporting across the region and beyond.

The automotive sector is worth around ฿2.1 trillion, about 11% of GDP, and employs roughly 690,000 people.

And the thing it is best at is being replaced by something with fewer parts.

That sentence is the entire article, and the numbers underneath it are worse than the headline suggests.

What’s actually happening to the market

Chinese brands now hold somewhere between 70% and 80% of Thailand’s EV market. Seven of the top ten EV brands sold here are Chinese, with BYD alone at around 40% of the EV segment.

Across the whole market, Chinese automakers have gone from 3.2% share in 2020 to 21.2% in 2025 — a 5.2-fold increase in sales volume in five years.

Meanwhile the Federation of Thai Industries has cut its annual production target to 1.45 million units, forecasting around 1.5 million for 2026 after a 2025 dip. First-half production came in at 717,212 vehicles, down 1%.

The Japanese incumbents are responding — Toyota expanding hybrid production here, Honda committing to new EV models, Mitsubishi and Nissan sharing platforms. They remain dominant in the overall market. But the EV segment specifically has moved, and it moved fast.

The part that isn’t about brands

Here is where almost all the coverage stops, and where the actual problem starts.

An electric vehicle has dramatically fewer components than a combustion vehicle.

No engine block. No gearbox in the conventional sense. No exhaust system, no fuel injection, no clutch, no timing belt, no fuel pump, no catalytic converter, no oil filter, no radiator in the same form.

Thailand’s automotive employment is not mostly in final assembly. It is in Tier 1 and Tier 2 suppliers — the firms that make exactly those things.

An estimated 110,000 auto-parts workers are at risk of displacement from the EV transition, with analysis putting 16.3% of the automotive workforce at risk of redundancy where suppliers adapt slowly.

This is not a company losing to a competitor. It is a category of manufacturing being deleted, and the deletion happens whichever brand wins.

The government targets EVs at at least 30% of total vehicle production by 2030 and 50% by 2035. Those are stated policy goals. They are also, read from a Tier 2 factory in Chonburi, a schedule.

Winning the investment and losing the jobs

Now the counterintuitive bit, which I think is the most important thing in the piece.

Thailand is not failing to attract the new industry. It is succeeding.

EV investment has topped ฿137 billion, with the Board of Investment explicitly targeting an ASEAN EV hub position. Chinese manufacturers are building plants here, for domestic sale and for export. By every measure a foreign investment agency uses, this is working.

And it does not solve the parts problem. It may accelerate it.

A new EV plant arriving with its own established supply chain does not create demand for a Thai firm that machines engine components. It creates a modern factory next door to a supplier whose product the new factory does not use.

Investment figures and employment figures can move in opposite directions, and in a transition like this one, they are structurally likely to. Announcing the first as a success while the second falls is the specific failure mode to watch for, and it is the easiest thing in the world to do accidentally.

Where article 89 gets its counter-example

I made a large claim in article 89: Thailand’s universal systems work and its categorical systems fail, because protection categories get drawn around people who already had options.

This sector is the clean counter-example, and it deserves stating as clearly as the failures did.

These 110,000 people are employees. In factories. With contracts. Which means article 74’s Labour Protection Act applies to them in full — including the severance ladder that runs to 400 days’ wages at twenty years’ service, uncapped, at actual pay.

Auto parts is a long-tenure industry. Workers who joined a Tier 2 supplier in their twenties and are still there are exactly the people the top severance bands were written for.

So Thai labour law works here. Not because the workers are luckier, but because the category — employee, in a workplace, with a contract — describes them accurately. When the category fits, the protection arrives, and that is the strongest evidence for article 89’s argument rather than against it.

And it has a price nobody appears to have calculated. A large-scale, long-tenure redundancy across the Thai parts sector carries a severance bill running to hundreds of days of wages per worker. That is a real corporate and possibly fiscal exposure, on a published policy timetable, and I have not found anyone who has costed it. Somebody should, before 2030 rather than after.

What this means for article 09

Article 09 described a Thai economy growing at around 1.5%, with household debt near 88% of GDP, and asked what happened to the country that grew at 7%.

This is one of the mechanisms, visible in real time.

Thailand’s escape from middle income was supposed to run through manufacturing sophistication — moving up the value chain from assembly to components to design. The auto sector was the flagship of that strategy and it largely worked.

And the technology it specialised in is being replaced by one that needs less of what Thailand learned to make.

That is not a policy failure and it is not anyone’s fault. It is what happens when a country’s industrial competence is a bet on a technology, and it is a risk every manufacturing economy carries and almost none prices.

Article 65 is relevant too: the auto cluster is on the Eastern Seaboard, not in Bangkok. It is one of Thailand’s few large industrial employers outside the primate city, which makes the regional consequences of a parts contraction sharper than the national numbers suggest.

What would help

Map the exposed firms. Which Tier 2 suppliers make ICE-specific components and how many people do they employ, by province? That list must exist somewhere and it should be public, because you cannot retrain a workforce you haven’t identified.

Fund the transition, not just the arrival. ฿137 billion has gone into attracting EV production. The comparable figure for supplier conversion and worker retraining is the number that matters and it is not the one being announced.

Cost the severance. It’s a known liability on a known timetable.

And be honest about which parts don’t transfer. Some suppliers can convert — electronics, interiors, structural components, wiring. Some make engine internals and cannot. Pretending otherwise wastes the retraining budget on the firms that were going to be fine.

Common misconceptions

“Thai carmakers are losing to Chinese ones.” Thailand assembles for foreign manufacturers; the competition is between brands, and Thailand hosts both. The exposure is in components, not brands.

“EVs will just replace the jobs.” EVs require substantially fewer parts, so parts employment falls even if assembly holds.

“Thailand is losing EV investment.” It has attracted over ฿137 billion and is pursuing an ASEAN hub strategy. Winning the investment and losing the jobs are compatible.

“Japanese brands are finished here.” They remain dominant in the overall market and are investing in hybrids and new models. The EV segment specifically has shifted.

“It’s a small sector.” Around 11% of GDP and 690,000 jobs.