Many people tend to underrate the 2004-06 Pontiac GTO, probably because it looked and felt too European for anything bearing the hallowed badge, ignoring the fact that it was considerably faster, nimbler, more comfortable, better equipped and easier to live with than any of its predecessors, which explains why I consider it to be the best GTO ever made (or which could ever have been made, for that matter). This was even truer of the LS2-engined model introduced in 2005, which added 50 more horsepower over the preceding LS1. It was, in fact, an Australian import with an American nameplate - which at least partly explains why I love it so much.
Not helping matters were its late introduction to the US market, coinciding with a strong Australian dollar; it did not debut until the fourth quarter of 2003 (as a 2004 model) - a full two years after Australian-spec Monaros began rolling out of the Holden production line in Elizabeth, South Australia. The fact that the more American-looking fifth-gen Mustang and reborn Dodge Charger came out soon after the GTO returned to the price lists only made it an even harder sell than it should have been. In fact, the new Monaro was a two-door coupe version of the 2000 VX Commodore (itself an updated version of the VT Commodore, introduced way back in 1997), which would be facelifted twice - first as the VY and then as the VZ - so it was already starting to show its age by the time it entered the 2006 model year, which turned out to be its last.
Whatever Pontiac did to improve the GTO’s fortunes later in its lifespan, it was too little, too late - when the Monaro went out of production at the end of 2005, the GTO died with it a few months later. The real tragedy is that its lack of success turned out to be one of several nails in Holden’s coffin as a manufacturer in its own right, ultimately leading to its relegation to mere importer status by the end of 2017. In fact, the Monaro was the last two-door coupe (not counting utes) ever made in Australia until the 2018 Brabham BT62.
https://www.whichcar.com.au/features/2004-2006-pontiac-gto-quick-history-lesson
Want more proof that the final Pontiac GTO may well be the best one they could ever have made? Here it is: