The Lexus RX (XU30) is the second generation of the Lexus RX series of crossover SUVs that was sold by Lexus from 2003 to 2009. First introduced in 2003 at the North American International Auto Show, the initial RX 330 models (MCU33/MCU38) went on sale later that year. A Japanese domestic market and Southeast Asian version, the second generation Toyota Harrier (ACU30/ACU35; MCU30/MCU35), also went on sale in 2003. Introduced at the 2004 North American International Auto Show, the RX 400h (MHU33/MHU38) became the first production premium hybrid vehicle when it went on sale in 2005. The RX 400h debuted a Lexus Hybrid Drive powertrain which combined a V6 gasoline engine with electrical motors. In 2006, the RX 330 in North America was upgraded with a more powerful V6 engine and became the RX 3