WhichTrim API alternatives

US vehicle recalls, complaints, fuel economy, crash ratings, service bulletins and VIN decoding. If it doesn't fit your project, here are the 10 best free Vehicle APIs to use instead in 2026, out of 14 in the directory.

For reference, WhichTrim API: Callable from the browser (CORS) · HTTPS.

1. 1

   Bike Reliability API

   Online · 524 ms

   UK motorcycle reliability ranked by first-time MOT pass rates.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
2. 2

   ProblemsByVin API

   Online · 523 ms

   Owner complaints, recalls and failure-mileage statistics by vehicle make, model and year.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
3. 3

   TransparentCars API

   Online · 644 ms

   Fair-price valuation and yearly road tax (IUC) for used cars in Portugal.

   • No API key needed
   • Callable from the browser (CORS)
   • HTTPS

   No authHTTPSCORS
4. 4

   CarVector API

   Online · 1152 ms

   Vehicle specs, images, recalls, and DTC codes across 1925-2029.

   • Callable from the browser (CORS)
   • HTTPS

   apiKeyHTTPSCORS
5. 5

   RevCarData API

   Online · 535 ms

   86,000+ global vehicle specifications and EV metrics.

   • Callable from the browser (CORS)
   • HTTPS

   apiKeyHTTPSCORS
6. 6

   Brazilian Vehicles and Prices API

   Online · 312 ms

   Vehicles information from Fundação Instituto de Pesquisas Econômicas - Fipe.

   • No API key needed
   • Fast: 312 ms response
   • HTTPS

   No authHTTPSNo CORS
7. 7

   Kelley Blue Book API

   Online · 168 ms

   Vehicle info, pricing, configuration, plus much more.

   • Fast: 168 ms response
   • HTTPS

   apiKeyHTTPSNo CORS
8. 8

   NHTSA API

   Online · 704 ms

   NHTSA Product Information Catalog and Vehicle Listing.

   • No API key needed
   • HTTPS

   No authHTTPSCORS ?
9. 9

   NHTSA Vehicle Recalls API

   Online · 334 ms

   NHTSA safety recalls by model year, make and model with component, consequence and remedy.

   • Fast: 334 ms response
   • HTTPS

   apiKeyHTTPSCORS ?
10. 10

    Smartcar API

    Online · 1702 ms

    Lock and unlock vehicles and get data like odometer reading and location. Works on most new cars.

    • Callable from the browser (CORS)
    • HTTPS

    OAuthHTTPSCORS

WhichTrim API vs alternatives

WhichTrim API compared with its alternatives

API	API key	HTTPS	CORS	Uptime	Response	Rating
WhichTrim	Required	Yes	Yes	Up	585 ms	Not rated
Bike Reliability	No	Yes	Yes	Up	524 ms	Not rated
ProblemsByVin	No	Yes	Yes	Up	523 ms	Not rated
TransparentCars	No	Yes	Yes	Up	644 ms	Not rated
CarVector	Required	Yes	Yes	Up	1152 ms	Not rated
RevCarData	Required	Yes	Yes	Up	535 ms	Not rated
Brazilian Vehicles and Prices	No	Yes	No	Up	312 ms	Not rated
Kelley Blue Book	Required	Yes	No	Up	168 ms	Not rated
NHTSA	No	Yes	Unknown	Up	704 ms	Not rated

See also: best Vehicle APIs · all Vehicle APIs