A car's real costs show up on a schedule too. Here's when replacing beats repairing, when a warranty makes sense, and how to plan ahead instead of reacting to a breakdown.
The expensive car decisions all cluster in the same window: the factory warranty ends, the miles pile up, and one big repair suddenly makes you ask whether the whole car is worth keeping. Get ahead of that window and you make the call on your terms. Miss it and the shop makes it for you.
These guides cover the four decisions that actually cost money: replace or keep, repair or replace, extended warranty or self-insure, and when tires cross from fine to unsafe. Each one comes down to timing — knowing the moment is coming before the breakdown announces it.
When should you replace your car?Most cars hit rising repair costs around 8–10 years, once the factory warranty is long gone. See when replacing beats repairing, and how to plan ahead.
Should you repair or replace your car?A simple rule for repair vs replace: if a repair costs more than half the car's value — or repairs are clustering — it's usually time to replace. Here's the math.
Is an extended car warranty worth it?Extended warranties pay off on expensive-to-repair cars you plan to keep past the factory warranty — and waste money on reliable ones. Here's how to decide.
When should you replace your tires?Replace tires at 4/32" tread for safety (2/32" is the legal limit), and by 6–10 years regardless of tread. See how to check, and what it costs.
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Common questions
What's the single most useful moment to watch for?
The end of the factory warranty, usually 3–5 years or 36k–60k miles. That's when repair risk shifts to you, and it's the natural point to decide whether to keep the car, price a replacement, or buy coverage.
Does keeping a car longer actually save money?
Usually yes, up to a point — a paid-off car with modest repairs beats a new loan. The math flips when repairs start clustering or a single bill approaches half the car's value. The repair-vs-replace guide walks through where that line is.
Can you remind me before a big car cost hits?
That's what the brief does. Tell us your car's age and mileage and we'll flag it as it enters the replace-or-warranty window — plus a heads-up on renewal timing for the insurance that rides along with it.