How that the brand name LEXUS is derived to be remains a mystery, though there are four different theories that have been posed over the years.
The most probable theory, the magazine "BEYOND BY LEXUS": The brand name LEXUS is a coined name for "luxury" and "latest technology". "Alexis" and "Lexis" were also nominated as the candidates when deciding on the brand name. This is the testimony of Yoshio Ishizaka, who directed the launch of the LEXUS brand and the of the strategy for expanding overseas of Toyota Motor Corporation.
The 2nd theory, the book "The challenge of LEXUS TOYOTA": LEXUS is derived from the German word "Luxus".
The 3rd theory, the book "The Lexus Story: The Behind the Scenes Story of the #1 Automotive Luxury Brand in America":
According to a New York advertising company involved in the launching LEXUS brand, "LEXUS" has no specific meaning.
The 4th theory, the financial magazine "Forbes": LEXUS stands for "Luxury Exports to the U.S."
LEXUS is one of the brands distributed by TOYOTA.