In a sense I believe that Scar behaved somewhat immaturely, however I don’t perceive him to have been ‘immature’. Whilst his motives were rather childish, he had the mind of a fully matured male. Perhaps as a young cub he envied Mufasa and as he grew this progressed into hatred. A child who envies another, acts without thought, they do as they please in ‘the heat of the moment’ and then later regret their actions. But Scar did not do this; in fact he did the opposite of this. His motivations developed and he schemed behind his brothers back for years before finally making a move. By befriending the hyenas, creating a stampede, achieving to have both Simba and Mufasa placed perfectly into his plans and then convincing Simba that it was in fact his own fault was something that was done out of severe anger and jealousy and could have only been accomplished by someone with an extremely intelligent mindset. Scar was not acting immaturely but more so was blinded by his own constant hatred which is something even the most mature adult is capable of doing.
