The Calibers that are not equipped with the keyless entry have keyholes on the rear hatch and both front doors.
If the car is equipped with keyless entry, then the driver's door is the only one with a keyhole. Even if the battery in the key fob goes dead, one can still unlock the driver's door and hit the unlock button on the inside of the door to get into the hatch or other doors.
Pretty much standard fare on cars these days. The past few years MOPAR products had a Grey key(coded) - keyless with one keyhole, or Black key(non coded)- all doors keyed. The new keys are just different shaped, but same principal.
Most of the other manuf. do it too. I think it started somewhere around later 1990's.