What is the consequence of the car market in the cycle of repeated shocks/new high prices?

The automobile market has not yet moved away from the fever of the previous price increases, when Iran Khodro changed the market equations once again with a 30-50% increase in the price of its products, and although car manufacturers talk about the increase in production costs, the question still remains as to why the regulatory bodies have not been able to create a mechanism to prevent any price correction from becoming a psychological shock in the market.