South Korea’s Industrial Output Jumps 3% in September, the Biggest Gain Since 2011, on Chips and Cars

Photo: Niels Johannes, Wikimedia Commons, CC BY-SA 4.0 (file photo, 2006). A container terminal in Busan.

South Korea’s industrial output rose 3.0% in September from August, the fastest monthly gain since March 2011, as semiconductor production surged and car factories recovered from strikes and summer shutdowns, government data released Friday, Oct. 30, showed. South Korea industrial output, retail sales and facility investment all rose in the same month for the first time since June, Yonhap News Agency reported, citing the Ministry of Data and Statistics.

Chips and cars lead the rebound

Output in mining and manufacturing jumped 9.0%, the biggest increase in 17 years and seven months, according to Yonhap. Semiconductor production rose 19.2%, the largest gain since a 28.2% rise in February, which the statistics ministry attributed to higher output of memory chips such as DRAM.

Automobile output soared 39.9% on increased production of parts and hybrid models, as strikes at local carmakers and the summer vacation season ended, Yonhap said. That was the largest increase since March 2020, when car production rose 46.6%, The Asia Business Daily reported. Production of medical, precision and optical instruments fell 8.8%.

Service output rose 0.5%, led by wholesale and retail trade (up 3.5%) and transportation and storage (up 3.6%).

Consumers and companies spend again

Retail sales, a gauge of private spending, climbed 3.6%, ending declines of 2.5% in July and 1.8% in August, according to the Ministry of Finance and Economy. It was the largest increase since February 2023, The Asia Business Daily reported. Sales of durable goods rose 4.4%, nondurables 4.2% and semidurables 0.6%.

“The recovery in automobile sales led (to an improvement in retail sales),” Lee Doo-won, a senior official at the statistics ministry, said at a briefing, according to Yonhap. He also pointed to post-Chuseok holiday demand for food and to discount events at supermarkets.

Lee, the statistics ministry’s director general for economic trends and statistics, also cited a base effect from a drop in passenger-car sales in August and sales of new models, including Hyundai’s Avante and Grandeur, according to The Asia Business Daily. September’s 3.6% retail gain was the largest since a 5.1% rise in February 2023, the paper said.

Facility investment increased 5.3%, with machinery up 4.7% and transport equipment up 7.4%. Construction completed rose 5.8%, and construction orders, a sign of future work, jumped 49.8% from a year earlier in nominal terms. Manufacturing capacity utilization stood at 76.8%, The Asia Business Daily reported.

Machinery investment benefited from expanded data-center construction, according to The Asia Business Daily. Within construction completed, building work, which includes semiconductor plants and data centers, rose 5.1%, and civil engineering rose 7.4%, the paper reported.

By the numbers: a rebound from August

September’s gains followed a weak August. All-industry output rose 2.6% in June, slowed to a 0.1% gain in July and fell 1.2% in August, according to Yonhap; mining and manufacturing dropped 4.6% in August before rising 9.0% in September; and facility investment swung from a 9.7% decline to a 5.3% gain, ministry data show.

TBR calculations from the ministry’s month-on-month figures: compounding July through September, all-industry output rose about 1.9% over the three months, mining and manufacturing about 4.7%, and retail sales fell about 0.8%, meaning the September jump in retail spending did not fully reverse the summer declines. The finance ministry separately said all-industry production rose 1.9% in the third quarter, a second straight quarter of strong growth.

The broader indicators were mixed. The cyclical component of the coincident index, which tracks current conditions, rose 0.5 point to 102.2, while the leading index, which signals the economy’s direction, slipped 0.1 point to 104.1, held back by a fall in the KOSPI stock index and a narrower gap between long- and short-term interest rates.

Government outlook and risks

The finance ministry said output could fluctuate in October but should keep an upward trend given solid consumption, business sentiment and exports. “However, risks also remain, including high oil prices, global interest rate hikes and uncertainties surrounding the U.S. midterm elections,” the ministry said, according to Yonhap. It said stabilizing living costs would be its top priority.

The finance ministry said it would focus on three areas, namely housing, jobs and financial services for vulnerable groups, according to Yonhap. It also said it would keep pursuing its growth agenda, which it describes as three “mega-projects,” seven “SEED” initiatives, a Korean-style green transformation (K-GX) and support for the service industry, The Asia Business Daily reported.

The chip rebound echoes the record results reported this week by South Korea’s largest company; see TBR’s report on Samsung’s quarterly profit topping 100 trillion won on AI memory demand. For the U.S. comparison, see U.S. third-quarter GDP growth of 3.4%.

Sources

• Ministry of Finance and Economy: Monthly Industrial Statistics, September 2026
• Ministry of Data and Statistics: Industrial Activity Trends, September 2026 (Korean)
• Yonhap: Sept. industrial output growth hits 15-yr high on chips
• The Asia Business Daily: Semiconductors, autos drive September industrial output

Additional sources

• Ministry of Finance and Economy: press release with full report