This offer is only valid for renting / hiring passenger cars ( it's not valid if you want to rent a truck e.g.)
This offer is only valid for the rental of passenger cars.
Any other suggestions?
Thanks a lot.
Remember - if you don't use correct capitalisation, punctuation and spacing, anything you write will be incorrect.
Are valid for / apply to interchangeable here?
I'm not a teacher of English, but I have spoken it for (almost) all of my life....