Merkava engine fire

Recently I felt that Merkava Mk1~2 exploded quickly in case of engine fire. Even though it was the first fire, the explosion occurred after about 15 seconds. I also tested the Challenger and T-90, Leopard and they dont explode in 15 seconds. Is it just a Merkava feature?

Doesn’t make much sense to me, the engine and a single fuel tank is in the front, and the rest of the fuel and all the ammo is in the back, excluding the ready rack which is in the centre of the vehicle.

this need to be report as a bug since the tank fuel and engine has a steal plate block those to crew tank and ammunition. also Mk 3 and Mk 4 have a same problem too.