Free Alternatives to CarMD API for Vehicle Data

michaelakoster — Wed, 18 Mar 2026 21:26:10 +0000

If you've looked for vehicle maintenance data APIs, you've probably found CarMD -- and then seen their pricing. Here are some free and affordable alternatives for developers.

1. Vehicle Finder API

URL: vehicle-finder.com
Free tier: 500 requests/month
Paid: Starting at $29/month for 10K requests

Covers: VIN decoding, oil specs, recalls, TSBs, diagnostic codes, maintenance schedules, complaints, torque specs, towing capacity, fluid specs, and more.

Uses free public data sources (NHTSA, OBDb, data.gov) so the data is the same quality -- just with a much better developer experience.

\`bash

Example: Get oil change specs for a 2020 Honda Civic

curl -H "X-API-Key: YOUR_KEY" \
"https://api.vehicle-finder.com/v1/oil?year=2020&make=Honda&model=Civic"
`\

2. NHTSA vPIC API (Free, Government)

URL: vpic.nhtsa.dot.gov/api
Free tier: Unlimited (no auth required)

Good for VIN decoding and basic vehicle info. Downsides: XML responses, inconsistent schema, no maintenance data, can be slow/unreliable.

3. NHTSA Recalls API (Free, Government)

URL: api.nhtsa.gov/recalls
Free tier: Unlimited

Specifically for safety recalls. Works but the data format is clunky.

4. OBDb (Free, Open Source)

URL: github.com/nicholasgasior/obdb
Free tier: Fully free (download the data)

Great for DTC code lookups. It's a static dataset though -- you'd need to host and serve it yourself.

Comparison

Feature	Vehicle Finder	CarMD	NHTSA Direct
VIN Decode	Yes	Yes	Yes
Oil Specs	Yes	Yes	No
Recalls	Yes	No	Yes
TSBs	Yes	Yes	Partial
DTC Codes	Yes	Yes	No
Maintenance	Yes	Yes	No
Free Tier	500/mo	No	Unlimited
Price	From $29/mo	From $49/mo	Free

Full disclosure: I built Vehicle Finder API. But I genuinely built it because I needed a CarMD alternative that wasn't $50+/month for a side project. The free tier gives you 500 requests/month which is enough to build and test with.

How to Look Up Vehicle Recalls by VIN in 3 Lines of Code

michaelakoster — Wed, 18 Mar 2026 21:20:21 +0000

Ever needed to check if a vehicle has open safety recalls? The NHTSA has this data, but their API is... not developer-friendly.

I built Vehicle Finder API to make this dead simple.

The Quick Version

curl -H "X-API-Key: YOUR_KEY" \
  "https://api.vehicle-finder.com/v1/recalls?vin=1HGCM82633A004352"

That's it. You get back structured JSON with every recall for that VIN -- campaign number, description, remedy, completion status.

Why Not Use NHTSA Directly?

You can! But:

NHTSA's API returns XML by default and inconsistent JSON
No authentication = no rate limiting = unreliable uptime
Data is spread across multiple endpoints with different schemas
No way to get recalls + TSBs + complaints in one place

Vehicle Finder API normalizes all of this into a consistent REST API with proper JSON responses, API key auth, and rate limiting.

Full Example (Python)

import requests

API_KEY = "vda_your_key_here"
BASE = "https://api.vehicle-finder.com/v1"

# Decode a VIN
vin = "1HGCM82633A004352"
vehicle = requests.get(f"{BASE}/vehicles/vin/{vin}",
    headers={"X-API-Key": API_KEY}).json()

print(f"Vehicle: {vehicle['data']['year']} {vehicle['data']['make']} {vehicle['data']['model']}")

# Get recalls
recalls = requests.get(f"{BASE}/recalls?vin={vin}",
    headers={"X-API-Key": API_KEY}).json()

for recall in recalls["data"]:
    print(f"Recall: {recall['component']}: {recall['summary']}")

What Else Can You Look Up?

Beyond recalls, the API covers:

Oil change specs -- type, capacity, filter part number
Maintenance schedules -- manufacturer-recommended intervals
Diagnostic codes -- OBD-II DTC descriptions and common fixes
TSBs -- Technical Service Bulletins from manufacturers
Consumer complaints -- crash/fire/injury reports from NHTSA
Torque specs, towing capacity, fluid specs -- and more

Getting Started

Sign up at vehicle-finder.com (free, 500 requests/month)
Confirm your email
Create an API key from the dashboard
Start making requests

Full docs: api.vehicle-finder.com/docs

I built this because I needed it for my own project and figured other developers might too. The free tier is genuinely useful -- 500 requests/month is enough to build a side project or prototype. Feedback welcome!

Forem: michaelakoster