The C1 Ariete "Certezza" is a standard C1 Ariete Production, modified with two long exhausts. The nature of this modification is suspected to be for the Ariete's potential participation in the 2014 Tank Biathlon as the standard exhaust produces a lot of black smoke and would be significantly visible. The C1 Ariete "Certezza" most notable usage was during the 20th Course Certezza at Viterbo in 2020 for training 12 marshals, with a training time of 10 months, a long time for training caused by the COVID-19 lockdown. New e-learning methods with simulators and theoretical formation were developed for the first time without having a direct lesson. During the final days of the Certezza Course, the final training was local training at Viterbo with B1 Centauro Serie III and C1 Arietes.

Introduced in Update "Hornet’s Sting", the C1 Ariete "Certezza" is a pack premium, and is the same tank as the C1 Ariete Production on the Researcheble tech tree. The vehicle has some good-looking decorations such as a camo net and bigger exhausts. The Ariete carries DM53 APFSDS shell, one of the best shells you can find. It has the WAR Kit, an armor add-on package on the front turret made for kinetic protection; meanwhile, the other parts of the armor are terrible, and the vehicle needs to be used more with a tactical approach. Ultimately, the vehicle has a decent speed and manoeuvrability.