How to Choose the Best Vehicle API in 2026
There are 6 Vehicle APIs in our directory. Of these, 2 require no authentication, making them ideal for quick prototyping. 2 are rated beginner-friendly.
Scores last tested: 2026-08-10
Quick Comparison: Top 6 Vehicle APIs
Ranked by API Score. Measured means we called a real endpoint of that API; Est. means the score is derived from metadata because the endpoint could not be called without credentials. Discontinued APIs are excluded.
| Name | API Score | Auth | HTTPS | CORS | Difficulty |
|---|---|---|---|---|---|
| Kelley Blue Book | 79 B Est. | API Key | ✓ | ✗ | Intermediate |
| Helipaddy sites | 77 B Est. | API Key | ✓ | ? | Intermediate |
| Smartcar | 73 B Est. | OAuth | ✓ | ✓ | Advanced |
| Mercedes-Benz | 69 C Est. | API Key | ✓ | ✗ | Intermediate |
| Brazilian Vehicles and Prices | 53 D Measured | No Auth | ✓ | ✗ | Beginner |
| NHTSA | 46 D Measured | No Auth | ✓ | ? | Beginner |
Free Vehicle APIs (No Auth)
These APIs require no API key or signup. Start using them immediately.
Brazilian Vehicles and Prices
⭐ Beginner's PickThis API provides official vehicle pricing data from FIPE (Fundacao Instituto de Pesquisas Economicas), Brazil's most trusted automotive price guide.
NHTSA
⭐ Beginner's PickThe NHTSA vPIC API provides free access to the U.S.
Try It in 5 Minutes: Brazilian Vehicles and Prices
Quick implementation example using Brazilian Vehicles and Prices.
Using curl
curl "https://parallelum.com.br/fipe/api/v1/carros/marcas"
JavaScript
const url = "https://parallelum.com.br/fipe/api/v1/carros/marcas";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data); New to APIs? Read our Getting Started Guide →
Frequently Asked Questions
How many Vehicle APIs are available?
There are 6 Vehicle APIs in our directory as of 2026.
Are there free Vehicle APIs?
Yes, 2 Vehicle APIs require no authentication and are completely free to use.
What is the easiest Vehicle API to use?
Brazilian Vehicles and Prices is one of the easiest to get started with. It is rated as beginner-level and requires no authentication.
Do I need an API key for Vehicle APIs?
It depends. 2 APIs need no authentication, 3 require an API key, and 1 use OAuth.