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Free Car Tools
Genuinely useful on their own — and a taste of what a subscription unlocks.
VIN Decoder
Decode any 17-digit VIN into year, make, model, engine and more.
Recall Check
Find open safety recalls by VIN or year/make/model — official NHTSA data.
OBD-II Code Lookup
Decode a check-engine trouble code, its causes and urgency.
Maintenance Schedule
See what service is generally due at your current mileage.
Fuel Cost Estimator
Estimate what a trip or your monthly driving costs in fuel.
Tire Size Calculator
Compare tire sizes — diameter change and speedometer error.
Compare Two Vehicles
Cross-shopping? Decode two VINs side by side — specs and recalls.
Repair Data →
Wiring diagrams, procedures and specs — browse by brand to unlock.