The record is free to read. A plan brings it to your product.
Pay for the data you use, not for a sales call
Every U.S. car, truck and SUV by year and trim — EPA, NHTSA and manufacturer press kits joined into one JSON API. Start free in a minute, upgrade when a product ships.
Try every endpoint. Attribution required.
- Every endpoint, full records
- Compare verdicts (/v1/compare)
- 100 requests per day
- 1 API key
- Non-commercial use, attribution required
For apps, dashboards and prototypes.
- 25,000 requests per month
- Compare verdicts with custom weights
- Commercial use
- 3 API keys, separate client IDs
- Email support
For products in production.
- 250,000 requests per month
- 20 requests per second
- Bulk JSON downloads
- Priority email support
For fleets, insurers and dealer software.
- 2,000,000 requests per month
- 50 requests per second
- 99.9% uptime SLA
- Internal redistribution license
- Named support contact
Data licensing, white-label, dedicated infrastructure, custom volumes.
- Bulk dataset license
- Redistribution rights
- Dedicated support & SLA
- Invoice billing
What each plan includes
| Free | Developer | Pro | Business | |
|---|---|---|---|---|
| Requests | 100 requests / day | 25,000 requests / month | 250,000 requests / month | 2,000,000 requests / month |
| Rate limit | 2 req/s | 5 req/s | 20 req/s | 50 req/s |
| API keys / client IDs | 1 | 3 | 10 | 10 |
| Commercial use | — | ✓ | ✓ | ✓ |
| Uptime SLA | — | — | — | 99.9% |
| Support | Community | Priority email | Named contact | |
| Every endpoint & field | ✓ | ✓ | ✓ | ✓ |
| Bulk JSON downloads | — | — | ✓ | ✓ |
| Internal redistribution | — | — | — | ✓ |
Why teams trust the data
EPA certification records, NHTSA recall, complaint, investigation and crash-test files, and manufacturers' own press-kit spec sheets. No scraped dealer sites, no user-submitted specs.
Trim-level figures carry the press-kit URL they were transcribed from; federal records carry their EPA and NHTSA identifiers.
The dataset is rebuilt from the source files every day and the API serves the same build the site does.
TLS 1.2+ on every request; data and keys stored with AES-256 server-side encryption on AWS.
Trim data is checked against the manufacturer's own material by a team that builds product training for OEM dealer networks.
Month to month, cancel from your dashboard, keys keep working until the period ends.
Questions
- Where does the data come from, and what does it not cover?
- Every field names the authority behind it, and the honest limits are stated up front rather than left to be discovered — see what is in the data. Read that before you pick a plan.
- How are requests counted?
- One request = one HTTP call to any /v1 endpoint, regardless of response size. List endpoints return up to 500 records per call, so a full-catalog pull is a handful of requests.
- When does my quota reset?
- Monthly plans reset on the calendar month; the free tier resets daily. Overages return HTTP 429 with a Retry-After header — nothing is billed automatically.
- Can I cancel?
- Yes, from the dashboard, any time. Your keys keep the paid plan until the end of the billing period and then drop to Free.
- Where does the data come from?
- EPA fueleconomy.gov certification records, NHTSA recall / complaint / investigation / NCAP files and manufacturers' official press-kit spec sheets. Every trim value carries its source URL.
- How fresh is it?
- The dataset is rebuilt every day from the source files. NHTSA campaigns typically appear within a day of posting; EPA and press-kit updates on the next build.
- Do you offer invoices, DPAs or custom terms?
- Business and Enterprise plans can be invoiced. Email data@whichtrim.com for a data-license agreement or custom volumes.
- Is there an alternative to a credit card?
- The same API is listed on RapidAPI if your team already bills there — same data, RapidAPI's plans and keys.
- What is /v1/compare?
- The scoring engine behind whichtrim.com/compare, as an endpoint: two or three vehicles (base trim by default, any trim by name, where a press kit is on file), seven categories scored 0–100 from the data, your weights, and a verdict with every number it rests on. detail=1 adds the full spec table, equipment matrix, safety record and ownership figures; narrative=1 adds the written take for pre-computed pairs. Same code as the site, so the answers never differ.
- Which vehicles have trim-level specs?
- Every model-year has EPA and NHTSA data. Trim-level MSRP, specs and equipment exist where we have ingested the manufacturer's press kit — the count grows weekly as the newsroom crawler finds new kits. Records say which level they carry (trims array empty = model-level).
Prefer a marketplace? The same API is on RapidAPI. Prices in USD; sales tax added where required.