Importers of HS 8708.40 (for vehicles of subheading 8701.21, 8701.22, 8701.23, 8701.2) from Vietnam actually paid 5.11% on the taxed portion of the value in 2026-06 — 5.11% across everything shipped, taxed or not. Measured from official duty receipts, not the rulebook: the statutory MFN base rate on this code is 2.5%. Over the window the rate on the taxed portion moved 2.5% → 5.11%, with the largest single step -22.7pp in 2026-02. Measured from official US duty receipts · as-of 2026-06 · confidence: measured, not modelled. The HTS base rate is 2.5% — importers actually paid 5.11%, so the trade-war overlay added 2.6 pts, measured at the border (not a summed rulebook estimate). Reproduce exactly: tariff_story(hs: "8708.40", origin: "Vietnam") · see it at trimtabist.com/tariffs
HS 8708.40. The schedule base rate is 2.5%; importers from Vietnam actually paid 5.11% on the dutiable value in 2026-06 — the trade-war overlay added 2.6 points, measured at the border. Measured, not modelled.
Over the window the collected rate moved 2.5% (2023-07) → 5.11% (2026-06), largest single step -22.7pp in 2026-02.
Vietnam's lower duty (5.11% vs 40.4%) lets it price up to 33.6% above China at the factory and still match on duty-inclusive customs cost. But on the LATEST measured prices, China actually lands cheaper — $7.75/kg vs $12.56/kg (duty in, freight out).
15 Chapter-99 measures name Vietnam; scope mapping is partial (several annexes are PDFs) — absence never means exemption. They do not sum, and some are product-specific — the collected rate above is the composed truth.
All goods from Vietnam · the whole tariff ledger · 4 CBP rulings cite this code · reproduce: tariff_story(hs: "8708.40", origin: "Vietnam") via /connect. Not customs or legal advice.