# FuelEconomy.gov

**Canonical:** https://apis.io/providers/fueleconomy/  
**Website:** https://www.fueleconomy.gov/  
**APIs profiled:** 6

US Department of Energy REST API providing official EPA fuel economy ratings, vehicle specifications, CO2 emissions data, and energy cost comparisons for all model years from 1984 to present. Administered by Oak Ridge National Laboratory for the DOE and EPA, the API offers free, unauthenticated access to vehicle lookup menus, per-vehicle MPG records, emissions data, current fuel prices, and community-contributed real-world fuel economy data.

## Kin Score — 31.3 / 100 (thin)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 31.3).

| Facet | Score |
|---|---|
| Discoverability | 74.1 |
| Contract Quality | 61.0 |
| Governance | 9.8 |
| Contract Governance | 9.8 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 9.5 |
| Commercial Clarity | 28.9 |
| Access Clarity | 28.9 |

Regulatory layer — **Government & Public Sector**: 20.4 (matched via tags).

## Agent readiness — 31.6 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | na |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | na |
| Error Semantics | no |
| OpenAPI Examples | verified |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | na |

## Access

Free · Open access — onboarding: open, pricing: free, trial: no (confidence: medium).

## APIs (6)

- **FuelEconomy.gov Emissions API** — EPA tailpipe emissions data per vehicle
- **FuelEconomy.gov Fuel Prices API** — Current US fuel prices used by the FuelEconomy.gov platform
- **FuelEconomy.gov Menus API** — Navigation menus for year/make/model vehicle lookup
- **FuelEconomy.gov User MPG API** — Community-contributed real-world MPG data
- **FuelEconomy.gov User MPG Menus API** — Navigation menus for community MPG data lookup
- **FuelEconomy.gov Vehicles API** — Retrieve EPA fuel economy and specifications for specific vehicles

## Agentic access (1)

- **Fueleconomy Agentic Access** — 12 operations

## Security (1)

- **Fueleconomy Domain Security** — TLSv1.2 · HSTS · DNSSEC · DMARC

## Plans (1)

- **Fueleconomy Plans Pricing**

## Tags

Fuel Economy, EPA, DOE, Energy, Vehicles, Emissions, CO2, MPG, Automotive, Government, Open Data

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/fueleconomy/). Scores are computed from the provider's own public artifacts under a published rubric.