The ES 300—Lexus' bestseller—is the entry-level model, billed by the manufacturer as an executive sedan when it was introduced. Completely redesigned in 1997, the 1998 ES 300 receives the addition of front-seat-mounted side airbags, a engine immobilizer security system, and availability of an optional 215-watt Nakamichi audio system. The ES 300 is the second generation of a car that replaced the ES 250, Lexus' original entry-level model. Like its predecessor, the ES 300 shares the basic architecture of the Toyota Camry, though its appointments reflect the high levels of comfort, convenience and refinement that have become trademarks of Lexus luxury.