Chips In by Air, Less Crude Out, and Fewer Cars by Sea: Mexico's Sea and Air Trade in August 2026

Bottom line: Mexico's sea and air imports reached US$32.50 billion in August 2026, up 20.8% from August 2025, led by US$3.50 billion of integrated circuits, most of them flown from Taiwan into Guadalajara for AI-server assembly. Sea and air exports rose 18.1% to US$13.49 billion, but crude oil fell 20.6% as Pemex refined more at home, and passenger cars leaving by sea fell 29.1%.

Desk: Claudio, Mexico. Dataset: Mexico customs declarations (pedimentos), imports and exports, sea and air only, values in US$. Period: August 2026, compared with June 2026 and August 2025. Vintage: data_updated 2026-10-21. Coverage caveat: sea and air only. Land trade by truck and rail across the U.S. border, most of Mexico's trade, is not in these files, so these are not national totals. July 2026 is not used as a base: the July import file is missing much of vehicles, ships and beverages, and the July export month is absent.

Key findings

• Chips led imports. Imports of integrated circuits (HS 8542) were US$3.50 billion in August 2026, up 44.5% from US$2.42 billion in June 2026 and 281.2% from US$918.7 million in August 2025, the highest monthly value in our files (from January 2025). Taiwan supplied US$2.75 billion of them (78.4%).
• Air carried the growth. Air imports rose 55.4% from August 2025 to US$12.82 billion, while sea imports rose 5.5% to US$19.68 billion. Air was 39.5% of import value, up from 30.7%.
• Less crude out, less fuel in than in June. Crude oil exports (HS 2709) were US$856.4 million, down 52.9% from June 2026 and 20.6% from August 2025. Refined fuel imports (HS 2710) fell 24.5% from June to US$1.93 billion, though still 42.9% above August 2025.
• Fewer cars by sea, more pickups. Passenger car exports (HS 8703) fell 29.1% from August 2025 to US$1.70 billion; pickups and trucks (HS 8704) rose 74.4% to US$644.9 million.
• Copper paid more. Copper ore exports (HS 2603) rose 43.5% from August 2025 to US$816.2 million, in line with a 48.1% higher copper price: a price story.

The numbers

Exports include one unexplained server line of US$540.3 million (see Verification notes). Without it, exports were US$12.95 billion, up 13.3% from August 2025, and air exports US$4.68 billion, up 47.8%.

Since March 2026, imports have held between US$30.7 billion and US$33.7 billion a month, and exports between US$13.5 billion and US$15.2 billion, with August slightly below June on both sides.

For scale, INEGI reported national exports up 40.4% and imports up 34.2% in August 2026, across all modes, to about US$78.0 billion and US$77.4 billion. Our sea and air files hold about 42% of that import value and about 17% of the export value: most exports cross the land border.

Why did Mexico fly in record chips from Taiwan?

Integrated circuits are the processors and memory inside computers. From April 2025, when our air data begins, to December 2025, Mexico imported US$0.9 billion to US$1.7 billion of them a month by sea and air. 2026 has been different:

• August 2025: US$918.7 million
• March 2026: US$1.92 billion
• May 2026: US$2.87 billion
• June 2026: US$2.42 billion
• August 2026: US$3.50 billion

The route is narrow. US$3.14 billion of August's chips (89.6%) landed at Guadalajara airport, Mexico's largest import port by value (21.3% of all imports), ahead of Manzanillo. From Taiwan, chip imports reached US$2.75 billion, against US$1.74 billion in June and US$333.8 million in August 2025. Taiwan's total sales to Mexico by sea and air were US$4.45 billion, up 77.8%, third after China and the United States.

The mix shifted toward parts: computer imports (HS 8471) were US$2.04 billion, down from US$3.73 billion in April 2026, while solid-state drives (HS 8523) were US$883.4 million, against US$112.3 million in August 2025.

The why is well reported. Mexico News Daily described how Taiwan is sending chips and other components to Mexico, where they are used in the assembly of AI servers, much of it then sent to U.S. data centers. Expansión reported that Foxconn installed its largest AI server factory in Guadalajara. Part of the SSD bill is price: TrendForce reported top-five enterprise SSD revenue up 103.6% quarter on quarter in 2Q26 on higher prices and shipments. Nationally, INEGI put August imports of intermediate goods at US$63,255 million.

Where do the finished servers go? Mostly by truck to the United States, which these files do not see. By sea and air, computer and server exports (HS 8471) were US$783.3 million in August 2026, excluding one unexplained line, against US$896.0 million in June and US$267.8 million in August 2025.

The overseas buyers were Spain (US$187.5 million), the United States (US$172.9 million), Australia (US$102.7 million, excluding the line) and India (US$99.5 million).

The nuance: US$505.0 million of August imports carry Mexico as the origin. That is not a new partner. Since July 2026 the source records Mexican-origin goods coming back in, mostly server parts under the IMMEX regime for export factories.

What the data shows: August's import growth is an air-freight electronics story: chips from Taiwan into Guadalajara. The servers they become leave mostly by land, so our files show only the overseas share.

Why did Mexico sell less crude and buy less fuel than in June?

Mexico has long sold crude and bought back refined fuel, mostly from the United States. In August 2026 both flows shrank from June.

Crude exports were US$856.4 million, down from US$1.82 billion in June 2026 and US$1.08 billion in August 2025. Brent averaged US$90.9 a barrel in August 2026 against US$68.2 a year earlier (World Bank), 33.3% higher, so the fall is about volume. INEGI reports that crude exports fell to 351 thousand barrels a day, from 510 thousand in July and 594 thousand in August 2025. The United States took US$579.1 million and Spain US$206.8 million.

On the import side, refined fuels were US$1.93 billion, down 24.5% from US$2.56 billion in June, while Brent was 6.4% higher than in June, so fewer litres arrived. The United States supplied 92.8% of the value; Tuxpan received the most.

The why is the refineries. GBM reported that Pemex's gasoline imports fell 24% in August from July, to 291,787 barrels a day, and diesel imports 26%, as the drop in crude shipments coincided with more processing at local refineries. Hellenic Shipping News said higher domestic fuel production allowed Pemex to reduce gasoline imports by 24% and diesel imports by 26%.

The nuance: year on year the fuel bill was still 42.9% higher, because prices were higher. And refined fuel exports rose to US$552.1 million, the highest in our files, including US$145.6 million of diesel from Dos Bocas and US$183.9 million of fuel oil from Salina Cruz. The data does not show why more fuel oil left.

What the data shows: Mexico kept more of its crude at home in August 2026 and bought fewer litres of fuel than in June. Higher prices still left the fuel bill well above a year earlier.

Why are fewer cars leaving by sea while more Chinese cars arrive?

Most of Mexico's car exports go to the United States by rail and never reach these files. What leaves by sea is the overseas trade and some U.S. shipments from Veracruz, Altamira and Lázaro Cárdenas.

By sea, passenger car exports were US$1.70 billion in August 2026, down 29.1% from US$2.39 billion a year earlier. Germany took US$235.2 million, down from US$498.0 million; the United States US$1.11 billion, down from US$1.42 billion. Brazil was the exception, at US$102.3 million against US$38.4 million.

National figures are steadier. INEGI's light-vehicle registry shows 300,475 light vehicles exported in August 2026, and FreightWaves reported that 76.3% of vehicle exports in the first eight months went to the U.S.. Expansión reported automotive exports down 2.2%, with sales to markets outside the U.S. down 7.8%. The sea data, weighted to those overseas markets, shows the weaker side. Pickups moved the other way: HS 8704 exports rose 74.4% to US$644.9 million, US$483.4 million of it to the United States.

Imports tell a different story. Passenger cars from China were US$541.4 million in August 2026, up 26.1% from June and 7.7% from August 2025, on 45,777 vehicles against 37,982 a year earlier: the highest monthly value since December 2025, the pre-tariff rush.

Official figures showed Chinese light-vehicle purchases down 31.1% in the first half of 2026 (La Razón) after Mexico's tariffs of up to 50%. The Rio Times reported that importers shipped heavily before the deadline and are still working through that stock. August's rebound would fit restocking as that stock runs down, but one month cannot show it.

What the data shows: Fewer Mexican cars went overseas by sea in August 2026, while Chinese car arrivals returned to their 2025 level. September will show whether that is restocking.

Trade with the U.S.

The United States is Mexico's largest partner, and most of that trade moves by land. Two views help.

Mexico's own sea and air data. Exports to the U.S. were US$5.24 billion in August 2026, up 14.4% from US$4.58 billion, 38.8% of sea and air exports, led by cars, aircraft and crude. Imports from the U.S. were US$4.64 billion, up 27.8%, of which refined fuels were US$1.79 billion.

Official U.S. Census data for August 2026, all modes. U.S. imports from Mexico were US$60.64 billion, up 34.2% from US$45.19 billion, and U.S. exports to Mexico US$33.66 billion, up 15.3% from US$29.19 billion. The U.S. deficit with Mexico widened to US$26.98 billion from US$16.00 billion.

Computers (HS 8471) explain most of it: US$20.32 billion from Mexico, against US$8.39 billion a year earlier. Mexico News Daily cited a Banamex estimate that Mexico supplied 34.5% of U.S. server imports in the first half. On the U.S. export side, computer parts (HS 8473) rose to US$2.86 billion from US$1.49 billion and refined fuels to US$2.51 billion from US$1.92 billion, more than the US$1.79 billion in Mexico's own sea and air files; land crossings, timing and valuation likely account for the gap.

The policy backdrop is the USMCA review. Mexico Business News reported that Mexico was asking Washington to adjust Section 232 tariffs of 25% on automobiles and 50% on steel and aluminum ahead of a fourth review round in September. Reuters, via Internazionale, reported that U.S. Trade Representative Greer said the U.S. intended to maintain some level of tariffs on both Mexican and Canadian goods under USMCA.

What the data shows: Trade with the U.S. grew in both directions in August 2026, led by servers that cross by land. Mexico's sea and air files show the fuel coming in and the cars and crude going out.

Verification notes

All 49 anomaly-register entries for August 2026 are classified:

• Excluded (contradicted), already out of the data: one capacitor import line (HS 8532) of US$82.56 million, about 1,000 times the importer's usual unit price (a likely decimal error); one frozen-beef export line to Japan of US$29.93 million, where a yen price per kilo appears to have been entered as dollars (real value about US$190,000).
• Unexplained, kept in totals, never a headline: one AI-rack server export line to Australia (declaration 6022495, US$540.3 million: 56 racks at US$9.65 million each, against US$4.22 million on a twin line in the same declaration). Up to US$304.0 million may be overstated. Australian Bureau of Statistics data shows ADP equipment imports up A$1,907m (79.3%) in August, but its mirror figures neither confirm nor contradict the line. Australia's concentration entry (US$763.8 million, 71% from that line) is also unexplained; without the line, exports to Australia were US$223.5 million, against US$94.7 million in August 2025. Server figures in this report exclude the line.
• Explained: Partner "Mexico" in imports (US$505.0 million) is a source-format change (Mexican-origin re-imports), not a new partner; "Turkey" replaced "Türkiye" in July, a name change. Wine and spirits looked like a spike only because July was incomplete. Aircraft imports (HS 8802, US$1.12 billion, up 66.2% from August 2025) include leased wide-bodies; El CEO reported that AerCap delivered a Boeing 787-9 on lease to Aeroméxico. Jet-engine lines into and out of Querétaro fit Safran's new complex there, with two maintenance shops for CFM56 and LEAP engines (Clúster Industrial). A US$26.3 million buoy at Altamira is equipment for the Trion oil project; Inspenet reported the detachable turret mooring buoy arriving. Other unit-value flags (car shipments, copper concentrate, banknotes) reflect shipment weights, provisional prices or face values.
• Bases: July 2026 is not used; January to March 2025 imports and exports are sea only; May 2025 fuel imports contain a known error.

What to watch

• The September 2026 file (November): whether chip imports stay above US$3 billion.
• Australian Bureau of Statistics September data and INEGI by-country figures, to settle the Australia server line.
• Pemex refinery runs: whether crude exports stay near 351 thousand barrels a day, after Pemex's August cut in crude exports and fuel imports reported by GBM.
• Chinese car arrivals as pre-tariff stock runs down.
• USMCA review rounds and any change to Section 232 tariffs on autos and steel.

Methodology and data notes

Figures are the public site's values (data/monthly/mexico, data_updated 2026-10-21): sea and air customs declarations, deduplicated, with the two contradicted register lines excluded. Line-level detail comes from the Trade Flow pipeline's standardized files under the same rules; Chinese car units are declared quantities from the sea import files. Air data starts in April 2025. Brent and copper prices are World Bank Pink Sheet monthly averages; U.S. figures are official Census data. No importer or exporter names from customs data are used.

Sources

Every link on this page passed the verification gate (live article, date in window, quote found, archived). Tier 1: Bloomberg, WSJ, Reuters, FT. Tier 2: other highly relevant sources (trade press, government, company releases, local press).

Tier 1

No Tier 1 source on this page.

Tier 2

• Tier 2 GBM Media. Exportaciones de crudo de Pemex caen un 45% en agosto, sube producción de gasolinas y diésel. 2026-09-30 archive
• Tier 2 INEGI. Balanza Comercial de Mercancías de México (BCMM), agosto 2026. 2026-09-25 archive
• Tier 2 Mexico News Daily. Mexico in Numbers: How Taiwanese imports are fueling Mexico's record tech exports. 2026-09-03 archive
• Tier 2 Expansión. México domina envíos a EU por 298,000 mdd, pero Taiwán y Vietnam le acortan distancia. 2026-08-13 archive
• Tier 2 TrendForce. Higher Prices and Shipments Drive Top Five Enterprise SSD Vendors’ Revenue to Nearly US$37.59 Billion in 2Q26, Says TrendForce. 2026-09-01 archive
• Tier 2 Hellenic Shipping News. Pemex crude oil exports fall 45% in August amid refining push. 2026-10-02 archive
• Tier 2 INEGI. Registro Administrativo de la Industria Automotriz de Vehículos Ligeros (RAIAVL), agosto 2026. 2026-09-04 archive
• Tier 2 FreightWaves. Exports of Mexican-made vehicles to the US rose in August. 2026-09-08 archive
• Tier 2 Expansión News. México eleva 40.4% sus exportaciones en agosto; registra superávit comercial de 605 mdd. 2026-09-28 archive
• Tier 2 La Razón de México. Se desploma 31% llegada de autos chinos. 2026-09-01 archive
• Tier 2 The Rio Times. Chinese Cars in Mexico Hit 17% of Sales Despite a 50% Tariff. 2026-08-18 archive
• Tier 2 Mexico News Daily. Mexico moves past Taiwan as the top AI server exporter to the United States. 2026-08-14 archive
• Tier 2 Mexico Business. Mexico, US Set Fourth Round of USMCA Review Talks for September. 2026-07-27 archive
• Tier 2 Internazionale. US, Mexico set three rounds of trade deal talks without Canada. 2026-05-28 archive
• Tier 2 Australian Bureau of Statistics. International Trade in Goods, August 2026. 2026-10-01 archive
• Tier 2 EL CEO. Aeroméxico acelera su expansión: suma nuevos aviones para conquistar más rutas internacionales. 2026-08-17 archive
• Tier 2 Cluster Industrial. Safran inaugura en Querétaro complejo aeronáutico con inversión de 140 MDD. 2026-06-30 archive
• Tier 2 Inspenet. Trion Project advances towards offshore installation in Mexico. 2026-08-24 archive

Data sources

• U.S. Census Bureau, international trade data, August 2026 (CargoFax Census pipeline).