В вагоне, в который они вошли, не б

В вагоне, в который они вошли, не было свободных мест.

Результаты (английский) 1:

In the car, in which they came in, there were no empty seats.

Результаты (английский) 2:

In the car, in which they have entered, was not available.

Результаты (английский) 3:

The wagon, in which they had entered, there was no free seats.