An army colonel said security forces used Russian Kornet missiles to destroy two of the vehicles in the Nadhim al-Taqsim area west of Baghdad, while an Iraqi airstrike destroyed the third.
Interior ministry spokesman Saad Maan said four vehicles were destroyed.
Security forces also used missiles to repel attacks on Anbar bases Thursday by terrorists using vehicle bombs - one of the ISIS's deadliest tactics.
Last month, ISIS used an unprecedented wave of truck and car bombs when it seized Ramadi, farther west, after which Iraqi army received 2,000 anti-tank systems to help repel such attacks.