Is it possible that the Decepticons can communicate via wirelessly?
In the first tranformers movie, Megatron awakens from a 200 year frozen sleep, declares his name, and exits the dam. Immediately he says "you've failed me again Starscream" as he passes Starscream. How else could he have known Starscream failed? Had he already received a progress report from nearby Decepticons? Unless Starscream is a perpetual failure and Megatron just assumes the worst about him, shame on you Megatron!
I recall that at least in the cartoons Autobots and Decepticons had different abilities. For instance, all Decepticons had the ability to fly regardless of vehicle type.