 The IS 250 (GSE20) went on sale in 2005 in Japan and North America in RWD (GSE20) and IS 250 AWD (GSE25) configuration, along with the more powerful rear-wheel drive IS 350 (GSE21) sedan.The IS 250 RWD comes standard with a 6-speed manual transmission, and a 6-speed automatic transmission is available as an option.All other gasoline-powered IS sedans are only available with the automatic.