Toyota Motor Corp.'s Lexus luxury line aims to grow as much as 10 percent annually for the next 30 years as it expands in the U.S., its biggest market, as well as in emerging markets from China and Vietnam to Brazil and Peru.

"I'm trying to get to nice methodical growth," Mark Templin, the executive vice president for the unit, said Monday in an interview in Detroit. "First and foremost, I want to establish the brand. If you get that right, the volumes will follow."

Lexus expects the biggest volume gains to come from the U.S., even as emerging markets reduce the American share of the unit's global deliveries, Templin said.