The Citation XLS evolved the Excel platform with Pratt & Whitney Canada PW545B engines and avionics refinements that improved performance and updated the flight deck. The flat-floor, stand-up cabin carried over unchanged from the Excel — a genuine competitive advantage that remained rare at the XLS's price point — and range of approximately 1,858 nautical miles served most domestic corporate missions without compromise. The XLS became one of the most delivered mid-size jets of its era, and its combination of cabin volume, performance, and operating economics established the Excel/XLS family as one of the most enduring franchises in business aviation.