First off: the three answers to the original question are actually refering to a commercial for the Mitsubishi Lancer. That's the one with the BNL tune. Unfortunately, the original poster was asking about the commercial for the Montero Sport.
*THAT* commercial contains a song which is actually a cover of a cover. The original song, entitled "20th Century Boy," was originally done by T. Rex. It was later covered by David Bowie, who changed the lyrics slightly from the T. Rex original. The version in the Montero Sport commercial is done by a British band called Placebo, and uses Bowie's modified lyrics.