If its defo from the air filter, then something has happened in the engine, you can get smoke if it is backfiring on intake valves or timing issue for example. An engine can still start with valves that are burnt, but on yours who knows the extent of the damage, if smoke has come out through air filter and engine isn't starting then it sounds pretty bad.
I would have liked to say its just starter or alternator, but if the AA guy couldn't get it started by putting it in gear and rolling it, then it sounds like a problem with the engine. Either way the dealer have botched something up here, which is why they've taken it into their technical team, dont let them fob you off.
I would have liked to say its just starter or alternator, but if the AA guy couldn't get it started by putting it in gear and rolling it, then it sounds like a problem with the engine. Either way the dealer have botched something up here, which is why they've taken it into their technical team, dont let them fob you off.