The Doctor and the TARDIS are practically inseparable on Doctor Who. While plenty of different companions have come and gone, the Doctor has always had their trusty TARDIS accompanying them throughout time and space. But the Doctor is no stranger to a dangerous situation and on more than one occasion that danger has almost cost the Time Lord their time machine.
Source：https://www.cbr.com/doctor-who-every-time-tardis-was-lost/
