G7 Summit Precedes July 1 USMCA Review, What Truck OEMs Must Watch

Will Trump renew USMCA after the July 1 review?

Trump has said he may not renew the United States-Mexico-Canada Agreement after the scheduled July 1 review, according to statements ahead of the G7 summit. The decision would trigger renegotiation of the trade pact that governs cross-border movement of trucks, trailers, engines, axles, and other heavy-duty equipment between the three countries.

Canadian Prime Minister Mark Carney has softened his tone toward Trump as the G7 summit approaches, with trade talks at stake. The summit comes immediately before the July 1 USMCA review deadline.

What USMCA non-renewal means for truck supply chains

The USMCA sets rules of origin for heavy-duty trucks and components. A Class 8 tractor qualifies for duty-free cross-border movement if 62.5% of its value comes from North American content. Engines, transmissions, and axles have separate thresholds. Non-renewal would revert trade to WTO terms or trigger a new negotiation, potentially raising costs for OEMs that build trucks in Mexico for U.S. fleets.

Mexican plants built 14,543 heavy-duty units in May, up 18.2% from April, with most exported to U.S. buyers. Freightliner, International, and Kenworth all run final-assembly lines in Mexico. A tariff increase on finished trucks or major components would hit landed cost for small fleets ordering new equipment.

Cross-border parts and warranty service

USMCA also governs movement of replacement parts. Cummins, Eaton, and Meritor ship engines, transmissions, and axles across all three borders under current duty-free rules. If the pact lapses without replacement, parts shipments face customs delays and potential tariffs. That affects warranty turnaround time and shop inventory costs for fleets running cross-border routes.

The U.S. has already imposed 10% tariffs on Canada, Mexico, Taiwan, and the U.K. over forced labor compliance, and Commerce set countervailing duties on Chinese van trailers at 82.3% to 128.7% and Mexican trailers at 1.9% to 1.95%. Additional tariffs from a failed USMCA renewal would stack on top of those rates.

What fleets should track before July 1

Small fleets and owner-operators with cross-border operating authority should monitor whether the U.S. and Canada reach agreement before the July 1 deadline. If Trump declines renewal, the next step is either a new negotiation or reversion to pre-USMCA trade terms. Either path introduces uncertainty into equipment pricing for 2027 model-year orders.

Canada has proposed tighter auto and aluminum supply integration as part of USMCA talks. That could shift where OEMs source cab aluminum and chassis components, affecting lead times and parts availability for shops.

Fleets planning to spec new trucks in the next six months should ask their OEM rep how a USMCA lapse would affect delivery dates and MSRP. If tariffs rise on Mexican-built units or Canadian-sourced engines, the delta could run several thousand dollars per truck. No OEM has published revised pricing tied to trade-pact outcomes, but the July 1 review is the trigger date to watch.