Game wants to swap engine to 'common' engine even though a very rare engine is enabled

Late game, specifically when the competitors research Hybrid Powertrain and it becomes a common feature in most cars, the game marks all of your cars that don’t have it as ‘missing a common feature’ even if you have something still considered rare, such as a fast engine or stop-start engine for some cars. The only time it doesn’t want you to change is if the car has any electric motor or the super fast engine