Guides
Short, practical explanations of the decisions behind keeping or replacing a car.
Car decisions
How Carvest Works
Methodology, data sources and limitations.
Should I Keep My Car or Buy a New One?
The variables that decide a keep-versus-buy comparison.
Buy a New Car or Keep My Paid-Off Car?
Why no payment isn't the whole picture.
Is Upgrading Your Car Worth It?
Cost, real improvement and personal fit.
New Car vs. Used Car Over 3 Years
Depreciation, rates, repairs and ending value.
How Long Should You Keep a Car?
How ownership costs shift as a car ages.
Ownership & repairs
When to Replace a High-Mileage Car
Why the odometer is a weak signal.
Trade Before 100,000 Miles?
What changes near the milestone — and what doesn't.
Keep a Car With 150,000 Miles?
Judging condition and repair outlook.
Repair Your Car or Buy a New One?
One repair bill against the cost of something else.
Repair an Old Car or Finance a New One?
Putting a repair and a loan on the same clock.
Trade In Before a Major Repair?
Repair and keep, repair then trade, or trade as-is.
Loans & equity
Calculators
Car Calculator
All comparisons in one place.
Keep or Buy Car Calculator
Your car against a replacement over 36 months.
3-Year Ownership Cost Calculator
Every cost line, plus ending equity.
Negative Equity Calculator
Model a payoff gap when switching cars.
Car Upgrade Cost Calculator
The true cost beyond the monthly payment.
Carvest provides estimates and decision-support information. Actual vehicle values, financing, insurance, repair costs and ownership expenses can vary.