If you are a car repair shop, it would be fairly difficult if you could not name the brand of cars that you support. If you call yourself "Ford Repairs" you might get into trouble, but saying that you can change oil on a Fords seems fairly clear as to be permitted under fair use.
From what I see it seems a fairly common practice that companies get explicit trademark permissions if they are an official retailer, official supplier, have employees that is official trained, or has some other direct relationship with the trademark holder. Companies without such permissions have to rely on fair use rules. Retailers and webshops generally also list what product or brands that they sell without being in conflict with trademark.
From what I see it seems a fairly common practice that companies get explicit trademark permissions if they are an official retailer, official supplier, have employees that is official trained, or has some other direct relationship with the trademark holder. Companies without such permissions have to rely on fair use rules. Retailers and webshops generally also list what product or brands that they sell without being in conflict with trademark.