# Suverse Vehicle Fuel Economy Detail (EPA FuelEconomy.gov)

> Suverse Vehicle Fuel Economy Detail (EPA FuelEconomy.gov) is a paid API for AI agents from proxy.suverse.io, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-14).

Returns full fuel-economy details for a vehicle by FuelEconomy.gov ID, including city/highway/combined MPG, CO2 emissions, annual fuel cost, fuel type, and powertrain — sourced keylessly from US EPA/DOE.

## Facts

- Endpoint: POST https://proxy.suverse.io/v1/data/suverse-veh-mpg-detail
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/suverse-vehicle-fuel-economy-detail-epa-fueleconomy-gov-9f75f0ac
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-alZx5rCUFxEEFj-BZNNX

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability suverse-vehicle-fuel-economy-detail-epa-fueleconomy-gov-9f75f0ac -d '<json body>'
```

Example prompt: Pull the full EPA fuel economy details for the vehicle with FuelEconomy.gov ID 48110 — I need city, highway, and combined MPG, CO2 grams per mile, annual fuel cost, fuel type, and powertrain.

## When to prefer this

Use this endpoint when you need authoritative US EPA fuel economy figures — city, highway, combined MPG, CO2 g/mi, annual fuel cost, and powertrain — for a specific vehicle identified by its FuelEconomy.gov numeric ID, without needing an API key. Prefer this over general web scraping or LLM-hallucinated MPG estimates when accuracy and official sourcing matter, such as for fleet efficiency scoring, environmental reporting, or consumer vehicle comparison tools.

## Known failure modes

- Invalid or non-existent FuelEconomy.gov vehicle ID returns an error or empty result
- Missing required body fields (type, method, bodyType, body) cause a 400-level error
- Upstream FuelEconomy.gov API downtime may result in timeout or 502 error
- Payment failure (x402) blocks access if USDC balance is insufficient

## How this service works

Full fuel-economy detail for a vehicle by FuelEconomy.gov ID: city/highway/combined MPG, CO2 g/mi, annual fuel cost, fuel type, powertrain. Keyless US EPA/DOE FuelEconomy.gov. For agents scoring vehicle efficiency.

## Output

A structured record containing city MPG, highway MPG, combined MPG, CO2 emissions in grams per mile, estimated annual fuel cost in USD, fuel type (e.g. regular gasoline, diesel, electricity), and powertrain classification (e.g. conventional, hybrid, plug-in hybrid, EV) for the specified vehicle.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "properties": {}
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/suverse-vehicle-fuel-economy-detail-epa-fueleconomy-gov-9f75f0ac/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from proxy.suverse.io](https://www.zero.xyz/host/proxy.suverse.io/llms.txt)