Miles & KeysWhat a car really costs, and when to stop paying it

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Independent guides for car owners

What a car really costs, and when to stop paying it

Plain-language guides on what owning a car costs: repairs, maintenance intervals, warranties, and the arithmetic behind keeping a car or replacing it.

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Featured · Ownership Costs

When a Repair Costs More Than the Car Is Worth

The rule about never spending more than the car is worth is the wrong test. Here is the arithmetic that actually answers repair or replace.

October 17, 2026 · 8 min read

No affiliate links. No sponsored posts. Every article shows how an ownership cost is put together, with the sources cited and dated.

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Buying and Selling

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Is Buying a Former Rental Car Worth It?

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Ownership Costs

Repair or replace, warranties, depreciation and what the next five years cost.

All ownership costs

Ownership Costs

When a Repair Costs More Than the Car Is Worth

The rule about never spending more than the car is worth is the wrong test. Here is the arithmetic that actually answers repair or replace.

8 min read

Ownership Costs

How Much Does Paying Off a Car Loan Early Save?

Calculate early car-loan payoff savings with a $12,000 example, extra-payment schedules, daily interest, penalty checks and add-on refund rules.

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Maintenance

Intervals that are real, jobs worth paying for, and the ones sold too early.

All maintenance

Maintenance

What You Are Paying For in a Brake Job

Pads, rotors, calipers and fluid are four separate decisions sold as one price. How to read a brake quote and which parts of it are optional.

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Buying and Selling

Used car checks, dealer paperwork, recalls and getting a fair price.

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