fueleconomy-mcp

US EPA car MPG, CO2 and pump prices - no API key.

Tools

• list_years — Model years the US fuel economy database covers. Start here when you know nothing else.
• list_makes — Every car make with EPA data for a model year.
• list_models — Models a make sold in a given model year.
• list_options — Trims/engines for a model, each with the vehicle id needed by vehicle_details.
• vehicle_details — Full EPA record for one vehicle id: MPG city/highway/combined, CO2, annual fuel cost, engine, class and scores.
• compare_vehicles — Compare up to 6 vehicles side by side on MPG, CO2 and running cost, and name the most efficient one.
• fuel_prices — Current US national average prices for regular, midgrade, premium, diesel, E85, CNG, LPG and electricity.
• running_cost — Estimated annual fuel cost for one vehicle at a chosen mileage, using its EPA combined MPG and either your fuel price or the national average for that fuel.
• compare_costs — Rank two to six vehicles by estimated annual fuel cost at the same mileage, with CO2, from their EPA records.

Setup

No setup. All data comes from the public fueleconomy.gov API.

Part of awesome-mcps.

Premium tools

These tools need a license key:

• model_recalls
• model_complaints

Buy a key at https://mcp-marketplace.io/server/io-github-mrfentmen-fueleconomy-mcp and set it in your MCP client config:

"env": { "MCP_LICENSE_KEY": "mcp_live_..." }

The key is checked against MCP Marketplace, cached for 24 hours, and keeps working offline once one check has succeeded. Every other tool on this server stays free.