Get a jump start from somebody else, and then figure out what it was you left turned on or plugged in to drain your battery. If it happens again, replace the battery.
By the way, this is why you should belong to AAA or another road-service club.
It could be a dead battery.
Battery is dead.
A good possibility would be a dead battery.
You need a new battery!
It sounds like a dead battery
A no start condition where the starter just clicks.
coz its a Mercedes and you need a rolesroice phantom. also just get a new battery
you need a new battery more than likely
It sounds like you may have a dead battery. Have you tried getting a jump?
jump start the car and get a new battery and if it isn't the battery it could be the alternator or both, but try a new battery first
How is your battery ? Try a battery charger , battery jumpstarter pack , or a battery boost and see if it starts . ( also, it could be a battery cable connection )
Weak battery or bad starter solenoid. Possibly a bad battery cable or corroded connection.