The encyclopedia · Engineering & Operations · Operational decision · 2011
Honda concentrated production in Thailand — the 2011 floods cut its global output in half
Three months of flooding shut Honda's Thai plants from October 2011. The Thai plant was 4.7% of global output; US and Canadian lines ran at 50% for months.
Honda · 2011-10-04
What happened
Honda had made Thailand its Asian manufacturing hub, producing cars, motorcycles and power products for export worldwide. In October 2011, the worst floods in Thailand's modern history submerged the industrial estates where Honda's plants sat. Honda Automobile Thailand suspended car production on 4 October; motorcycle production stopped on 11 October; power products on 6 October.
The Thai plant accounted for 4.7% of Honda's global output, but the disruption was far larger than that figure suggests. Thailand supplied parts to Honda's assembly lines in the US and Canada. Within weeks, those plants cut production by 50%. Honda withdrew its earnings guidance and reported a sharp fall in quarterly profit. Analysts estimated Thailand's auto industry would lose about 130,000 units of production.
The floods lasted three months. Honda's recovery took longer: parts shortages persisted into 2012, and the company did not return to full production for months. It was the second supply-chain shock of 2011 — the Tohoku earthquake in March had already exposed the fragility of concentrated Japanese supply. Two disasters in one year proved the pattern was structural, not bad luck.
Why it happened
- Honda concentrated Thai production in flood-prone industrial estates without adequate geographic diversification; one weather event shut the whole hub.
- Parts supply from Thailand fed assembly lines in the US and Canada, so a local flood became a global production cut — the supply chain had no alternative source.
- The Tohoku earthquake seven months earlier had already exposed concentrated-supply risk, but Honda had not yet diversified when the floods hit.
The lesson
Concentrating production in one geography cuts costs until the geography fails. Honda's Thai hub was efficient right up until the water arrived.
Aftermath
Honda diversified its supply base after 2011, adding production capacity in other countries and building buffer inventory for critical parts. The 2011 floods became a standard case study in supply-chain risk management, taught alongside the Tohoku earthquake as the year the just-in-time model met its limits.
Sources
- About the Impact of Flooding in Thailand on Honda Operations — Honda Global Newsroom (Oct 2011)
- Thailand floods disrupt production and supply chains — BBC News (Oct 2011)
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