While I can’t speak for the exact reasons behind the delay, it’s possible that there could be legitimate issues or complications in obtaining the EPA mileage rating. Sometimes, unforeseen challenges arise in the certification process, which can cause delays. However, I can understand why you might be skeptical and think there could be a purposeful creation of a false supply shortage.
If the delay is indeed intentional, as you suspect, it could be a strategy to create a sense of scarcity in order to drive up demand and subsequently increase selling prices. This tactic, unfortunately, isn’t uncommon in the business world, and it’s aimed at maximizing profits for both GM and the dealerships.
