at the 2005 north american international auto show, a major update of the range rover was unveiled, with the base model using the lr3/discovery 3 engine, and a premium model using a supercharged version of the jaguar 4.2-litre v8 developing — the same engine slated for the new range rover sport (the rrs model uses a detuned variant making a total of ), scheduled for introduction about the same time (mid-2005) as the updated range rover.