Jim, I think this is the same as it is ‘supposed to be’ in English (at least according to Apple) !   

https://www.dlaeditors.com/blog/product-names-plural#

Trade names are registered and have a specified form.

The advice to not use a plural form is often broken in English, but perhaps more observed in French as it is similar to the convention with surnames, and doesn’t usually change pronunciation ? 

An example from a search result ‘toutes les Renault Captur..’

            Voir toutes les RENAULT CAPTUR d'occasion en vente chez les concessionnaires Renault, partout en France. Un large choix de RENAULT CAPTUR : automatique, ...