About 90 percent of Lexus vehicles that come out of Toyota's Miyata assembly plant are exported to other countries, Toyota's website says, including the United States. The ES sedan, RX compact SUV, and UX and NX subcompact SUVs are all manufactured at the Miyata plant and shipped to the United States. Nissan's affected plants produce the Infiniti QX80 and the Nissan Armada, among other vehicles sold in global markets.

Toyota originally suspended operations at its three plants for one shift after the quake on Tuesday. After attempting to restart on Wednesday morning, it announced a suspension until Friday, which will impact production for its engine, hybrid powertrain, and Lexus assembly plants.

Toyota's three-day shutdown applies to all lines and will likely cause around 5200 units of lost vehicle output, according to AN. Nissan's shutdown, which began Wednesday, is less severe and only affects certain lines, though its end date is unknown.

Nissan specifically cited issues with parts availability for its partial shutdown. The Kumamoto area is also home to auto parts manufacturers that supply Toyota and Nissan, and any damages or shutdowns within those companies could have lasting effects on Toyota and Nissan's final output abilities, even with fully functional plants. AN says at least two parts suppliers have already suspended operations.