The data indicates that all vehicles of the Lexus IS (2005-09) 250 4-door saloon 2.5 Sport Multimedia model are equipped with a 2.5-liter petrol engine. There is a uniformity in both engine capacity and fuel type, with 100% of the sample featuring a 2.5-liter petrol engine. This consistency suggests that all units in this model range share the same engine specifications, which could be useful for buyers or technicians seeking precise vehicle information.