25%
US Auto Parts Tariff Rates
Section 232 imposes a 25% tariff on covered automobile and auto parts imports under Proclamation 10908. USMCA-compliant content carries an exemption; MHDV (medium- and heavy-duty vehicles) follow a separate 25%/10% framework under Proclamation 10984.
Last reviewed May 4, 2026 · Live rate updates tracked on /pulse.
Current rates
25%
25%
10%
Last verified and sources
Last verified: May 4, 2026
Rates and trade context on this page are checked against official tariff, customs, trade-policy, and import-data sources. Use the calculator for an item-specific duty stack before making entry, quote, or purchase decisions.
USITC HTS
Harmonized Tariff Schedule classifications and base duty rates.
Federal Register
Presidential proclamations, trade-remedy notices, and rule changes.
CBP
Customs entry, fee, ruling, and enforcement guidance.
USTR
Section 301 and trade-policy program source material.
Census trade data
US import value and origin-country trade data.
USMCA content rule
USMCA-compliant auto content is excluded from the Section 232 25% — but only the US/Mexico/Canada portion of the content qualifies. A vehicle with 60% USMCA content sees Section 232 25% applied to the 40% non-USMCA portion of the customs value.
Producers must document USMCA content via the Vehicle Certification (US-Japan Annex) or equivalent supplier certifications. CBP audits this calculation aggressively post-entry.
MHDV — separate proclamation
Medium- and heavy-duty vehicles, parts, and buses fall under Proclamation 10984, not 10908. Vehicles and parts get the same 25% rate; buses (HTS 8702) get a 10% rate. The proclamation took effect 2025-11-01.
Related
Audit your entries against these rates
POST a 7501-shaped entry to /v1/audit/entry and get a line-by-line diff between your declared duty and what the current rate stack says you owe — including FR-cited provenance for every overlay applied. $0.05 per entry, Team and Enterprise.