WhoBuiltMyCar answers one question well: where was this vehicle actually assembled? Since 2025 that answer also decides whether new-car loan interest is tax-deductible.
Data sources
- NHTSA VIN decoder (vPIC). When you enter a VIN, your browser asks the U.S. National Highway Traffic Safety Administration's public vPIC database for the vehicle's make, model, body, weight class and assembly plant. That's the same data manufacturers submit to NHTSA under 49 CFR Part 565.
- American Automobile Labeling Act reports (49 CFR Part 583). Every model year, manufacturers report each carline's final assembly countries, US/Canadian parts content and engine and transmission origin. Our model pages are built from these reports.
- IRS and Treasury guidance. Our deduction pages summarize Internal Revenue Code §163(h)(4) and the final regulations (T.D. 10054).
How we label models
- Built in USA Every version reported for that model year is assembled in the United States.
- Depends on VIN The model is assembled in the US and at least one other country. Only your VIN shows which plant built yours.
- Not US-built No US assembly plant was reported for that model year.
Manufacturers sometimes move production during a model year, and labeling reports can lag. Your vehicle's own VIN or window sticker always overrides a model-level label.
Updates
We refresh model data when NHTSA publishes new or revised labeling reports, and review the deduction rules whenever the IRS issues new guidance. Each guide shows when it was last reviewed.
Independence
We're an independent site, not affiliated with NHTSA, the IRS or any automaker or lender. The site is supported by advertising. Nothing here is tax, legal or financial advice. See our disclaimer.