All Car Calculators
Every MotorCrunch tool in one place. Each calculator is free, transparent and works for the US, UK, Canada and Australia — built to give you a real number for your own situation before a dealer, lender or insurer does the math for you. Pick a category below to jump straight in.
Car Financing
View financing hub →Work out real monthly payments, total interest and what you can actually afford before a dealer does it for you.
Auto Loan Calculator
See your true monthly payment, total interest and payoff — including tax, fees and trade-in.
Open calculatorAuto Refinance Calculator
See how much you could save per month — and over the life of the loan — by refinancing.
Open calculatorCar Affordability Calculator
Based on your income and budget, see the realistic car price and payment you should target.
Open calculatorLease vs Buy Calculator
Compare the real cost of leasing against financing the same car over the same period.
Open calculatorDown Payment Impact Calculator
See exactly how every extra dollar down changes your payment and total interest.
Open calculatorCar Tax & Fees Calculator
See the real out-the-door price — sales tax plus registration, title and dealer doc fees on top of the sticker.
Open calculatorDealer Quote Analyzer
Type the numbers from your dealer quote and see the deal decomposed: real out-the-door price, APR vs the national average, and a fully transparent Deal Truth Score.
Open calculatorCar Insurance
View insurance hub →Estimate premiums, compare coverage and see how claims, age and location move your price — then shop smarter.
Car Insurance Estimator
Estimate your annual and monthly premium from driver age, vehicle value, coverage level and risk — with a transparent, no-signup model.
Open calculatorRideshare Insurance Calculator
Driving for Uber, Lyft, DoorDash or Instacart? See the extra coverage cost you need on top of your personal policy.
Open calculatorClaim Impact Calculator
See how much one at-fault accident really costs — the surcharge added to your premium over the next three to five years.
Open calculatorCoverage Comparison Calculator
Liability only, standard, or full coverage? Get a recommendation for your car and see the real cost difference between them.
Open calculatorElectric Vehicles
View ev hub →Compare the true cost of going electric — charging vs fuel, payback period and real-world running costs.
EV vs Gas Savings Calculator
See how much an electric car saves you on fuel each year — and over five years — versus a comparable gas car.
Open calculatorEV Charging Cost Calculator
Find the cost of a full charge, the cost per mile, and your monthly charging bill — including real-world charging losses.
Open calculatorEV Payback Calculator
See how long it takes for fuel savings to repay the price premium of an EV over a comparable gas car.
Open calculatorEV Range & Cost Calculator
See your usable real-world range after cold and highway losses — and what it costs to drive 100 miles.
Open calculatorEV Battery Replacement Cost Calculator
Estimate the cost to replace an EV battery pack — and the amount to set aside each year so it's never a surprise.
Open calculatorOwnership & Value
View ownership hub →Depreciation, total cost of ownership and the smartest time to buy, hold or trade your car.
Car Depreciation Calculator
Project what your car will be worth in a few years — and how much value it quietly loses every year you own it.
Open calculatorTotal Cost of Ownership Calculator
Your car payment is only part of the story. See the real cost per year and per mile once depreciation, fuel, insurance, maintenance and interest are added in.
Open calculatorWhen to Replace Your Car Calculator
Repairs on an older car climb every year. See the point where keeping it finally costs more than the payment on something newer.
Open calculatorTwo-Car Comparison Calculator
Sticker price is a trap. Compare two cars on their real 5-year cost once fuel, insurance and resale value are factored in.
Open calculatorFuel Cost Calculator
Turn your annual mileage, MPG and local gas price into a real monthly and yearly fuel bill — plus cost per mile.
Open calculatorMaintenance Cost Calculator
Project realistic maintenance and repair costs as your car ages and the miles add up — annual average and 5-year total.
Open calculatorRoad Trip Fuel Cost Calculator
Plan the gas budget for any trip — total fuel cost and the per-person split once you factor in passengers.
Open calculatorKeep, Repair or Replace Calculator
A big repair quote on an aging car? Compare the real monthly cost of fixing and keeping it versus replacing it with a used or new car — and see the repair spend that flips the decision.
Open calculatorCar Tools & Specs
View tools hub →Decode a VIN, check a gear ratio, size a tire change and sanity-check towing numbers — practical shop-and-spec tools, not just cost math.
VIN Decoder
Paste a 17-character VIN to decode its country, manufacturer, model year and plant — and check the ISO 3779 check digit that flags typos and altered numbers.
Open calculatorGear Ratio Calculator
Turn your axle (final drive) ratio, transmission gear and tire diameter into an effective ratio and the engine RPM you'll actually see at any cruising speed.
Open calculatorTire Size Change Calculator
Compare an old and new tire size to see the change in overall diameter and exactly how far off your speedometer and odometer will read.
Open calculatorTowing Capacity Calculator
Work out how much trailer you can safely pull from your truck's real weight ratings — GCWR for the tow limit and GVWR for the payload that holds the tongue weight.
Open calculator