Many critics praised the inclusion of both the Urbont's classic 1966 Iron Man theme song and the modern cover of it, with Coleman calling it 'one of the best surprises of the movie and score', and Broxton highlighting the cover as 'a wonderful piece of feelgood jazz'. Allmusic gave the release three stars out of five, with reviewer James Christopher Monger saying that Djawadi 'treats the superhero with a predictably heavy hand', and imbues the film with 'enough bombast to fuel two sequels'. Coleman concluded by saying that 'a traditional, all-symphonic score would not have worked better for this film'. He felt that the release 'captures the most of the significant cues', but suffers from the inclusion of Suicidal Tendencies' 'Institutionalized'. Conversely, Christopher Coleman, writing for Tracksounds, gave the score a six out of ten, saying, 'as much as I had prepared myself to dislike this score.as much as I thought I'd be among the throngs of haters.and as much as I long for classically-styled scores for superhero films, Iron Man has won me over.' He felt that fans of the Remote Control style would find the score an 'industrially-clever diversion', but for others it would only give 'more fuel for your personal, -bond-fires'. Movie Wave's James Southall gave the soundtrack no stars, calling it 'yet another phoned-in score' from Remote Control, 'completely puerile garbage, as bad as film music gets'. the guitars do little more than repeat themselves over and over again, and the synth overdubs simply add another layer of aural sludge.' Broxton said, 'it’s not even good rock music.

It’s the ultimate musical overkill – loud, fast, brash, devoid of any kind of depth, and failing entirely to comment on any nuances which may exist in the film'. Clemmenson also questioned Djawadi's use of an orchestra, feeling that it gets 'washed away in the mix so thoroughly that the rock band and a set of keyboards is all that was truly required for this music' Jonathon Broxton at Movie Music UK said that Djawadi's approach 'seems to have been to appeal to the lowest of common denominators with driving rock rhythms, pseudo-heroic crescendos, and increasingly accelerating tempos.

Though he stated that there is 'nothing inherently wrong' with an electric guitar-focused score, but Djawadi 'is not yet ready to provide level of intrigue' that other composers such as Debney and Danny Elfman were able to with the instrument.

Christian Clemmenson of was extremely critical of the Remote Control influences on the soundtrack, negatively comparing it to Steve Jablonsky's Transformers and scoring it one star out of five.

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