Fuel Economy

Official US EPA/DOE fuel-economy, fuel-cost, and emissions data for a vehicle by year + make + model.

Overview

Official US EPA/DOE fuel-economy, fuel-cost, and emissions data for a vehicle by year + make + model. Because a model-year often has several powertrain configurations (engine/transmission), this returns one entry per configuration, each with: MPG city/highway/combined (or MPGe for EVs), CO2 tailpipe grams/mile, estimated annual fuel cost (USD), annual petroleum use (barrels), EPA greenhouse-gas score (1-10), 5-year savings vs the average new vehicle, plus transmission, drivetrain, cylinders, displacement, fuel type, EPA size class, and electric range for EV/PHEV. Authoritative EPA test figures — the real ratings an agent should not estimate. Keyless, public-domain (FuelEconomy.gov), covers model years 1984+.

Endpoint

Method	Endpoint	Price	Description
GET	/v1/marketplace/api/fuel-economy	$0.00207	Invoke Fuel Economy (Dns) and return the upstream response.

How to call it

Requests are paid per call over the x402 protocol. Call the endpoint, receive a 402 Payment Required quote, then repeat the request with the signed payment header. The SDKs do both steps for you.

# 1. Ask for a quote
curl -i https://api.jarvisclaw.ai/v1/marketplace/api/fuel-economy

# 2. Pay it (the SDK signs and retries for you)
curl -H "X-PAYMENT: <signed-payload>" https://api.jarvisclaw.ai/v1/marketplace/api/fuel-economy

Open in the marketplace