A car with a loose steering tie rod and bad alignment wanders across the lane and eats tires for breakfast. Keeping it on the road means swallowing repair bills when things wear out, and suspension work rarely waits until you have extra cash. Prices tend to soften a bit in late winter before the spring road-trip rush hits local shops.
We need to separate the repair bill from how you pay it. Negotiate the parts and labor directly with the mechanic first, bundling the alignment with a routine tire rotation to cut down on extra labor charges. Once you have the final number, look at your payment options.
That 0% intro APR is a deadline, not free money, so make sure the balance hits zero before the 15 months run out or deferred interest will trigger on what is left.