That fresh car smell fades fast once rock chips start peppering your bumper and summer heat turns your interior into an oven. Keeping a vehicle looking new takes more than weekend washes, and the real cost of ownership usually hides in these little preventative upgrades we keep putting off.
Timing is everything if you want to avoid paying full retail. Hit the tint and wrap shops on a Tuesday or Wednesday when their bays are quiet, and always separate the price negotiation from how you plan to pay for it.
Just remember that the 0% intro window is a strict deadline and not free money, so if you still have a balance left when those 18 months are up, you will get hit with interest charges on the remaining amount.