Translation of door

Hi Frank,

If you take a look at the following page you will see that when you talk about the number of doors according to each model on a car you will use 'porte' and not portière.

differents types de voitures- roitapis

 

The word 'portière'  exists for a car door but manufacturers and dealers only use it to indicate the part of the car and its use.

When talking about a particular model of a car you will be offered 

2 , 3 , 4 ou 5 portes

Bonne Continuation !