Depends on the vinyl, and keep in mind that horizontal surfaces like the hood and roof will have a shorter life than vertical ones like the door. So when a shop tells you the vinyl is rated for 6-8 years outdoor or something like that, a roof will always be on the low end of that range while a door will be the high end. It's also dependent on color, brighter colors will have a shorter life as well as heat (vinyl will not last as long in TX as it might it Seattle).
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