FuelEconomy.gov

Fuel economy ratings, vehicle fuel costs and electric driving range

FuelEconomy.gov provides official vehicle fuel economy ratings, driving range, emissions, five-year savings, and annual fuel costs based on current fuel prices and EPA’s 15,000-mile annual driving assumption.

Compare cars

Compare the official fuel economy and annual fuel costs of two to four cars by year, make and model. Selects a base version when no trim is specified; annual costs use FuelEconomy.gov estimates and plug-in hybrid figures may vary with charging.

Your information

Cars

Two to four cars, each with a year, make, and model; for example, 2024 Toyota Camry Hybrid and 2024 Tesla Model 3.

Cars 1

Use the same format as these example values: "2024 Toyota Camry Hybrid", "2024 Tesla Model 3", "2024 Honda Civic".

Cars 2

Use the same format as these example values: "2024 Toyota Camry Hybrid", "2024 Tesla Model 3", "2024 Honda Civic".

1 credit per completed run

The same inputs also work from your code or an AI assistant. See For developers.

Example results

2024 Tesla Model 3 RWD — Auto (A1) is the cheapest to run, saving $700 per year versus 2024 Toyota Camry Hybrid LE — Auto (AV-S6), 4 cyl, 2.5 L.

Car	Annual fuel cost	Combined economy	Unit
2024 Toyota Camry Hybrid	$1,250.00	52	MPG
2024 Tesla Model 3	$550.00	132	MPGe

About the FuelEconomy.gov tool

FuelEconomy.gov’s Get fuel economy returns MPG or MPGe, range, costs, savings, and emissions for a make, year, and model.

Compare cars returns fuel economy and annual fuel costs for two to four cars entered by year, make, and model.

Built from fueleconomy.gov. Last checked Sep 29, 2026.

Actions

Compare cars

1 credit

What you provide

Field	Type	Required	Description
Cars`cars`	List	Required	Two to four cars, each with a year, make, and model; for example, 2024 Toyota Camry Hybrid and 2024 Tesla Model 3.

What you get

Field	Type	Description
Cars`cars`	List	Vehicle comparisons in the order entered.
Car`cars[].car`	Text	Car exactly as entered.Example: 2024 Toyota Camry Hybrid
City`cars[].city`	Number	City fuel economy in the stated unit.Example: 51
Link`cars[].link`	Text	FuelEconomy.gov page for the matched vehicle.Example: https://www.fueleconomy.gov/feg/noframes/47092.shtml
Note`cars[].note`	Text	Why the car could not be matched, when applicable.
Highway`cars[].highway`	Number	Highway fuel economy in the stated unit.Example: 53
Combined`cars[].combined`	Number	Combined fuel economy in the stated unit.Example: 52
Fuel Type`cars[].fuel_type`	Text	Fuel used by the vehicle.Example: Regular
Vehicle ID`cars[].vehicle_id`	Text	FuelEconomy.gov vehicle ID.Example: 47092
Efficiency Unit`cars[].efficiency_unit`	Text	MPG or MPGe for the fuel economy figures.Example: MPG
Vehicle Matched`cars[].vehicle_matched`	Text	Official vehicle version selected, including transmission and engine.Example: 2024 Toyota Camry Hybrid LE — Auto (AV-S6), 4 cyl, 2.5 L
Co2 Grams Per Mile`cars[].co2_grams_per_mile`	Number	Tailpipe carbon dioxide emissions in grams per mile.Example: 170
Annual Fuel Cost (USD)`cars[].annual_fuel_cost_usd`	Number	Estimated annual fuel cost in US dollars.Example: 1250
Electric Range (miles)`cars[].electric_range_miles`	Number	Electric-only driving range in miles, when available.Example: 272
Greenhouse Gas Score`cars[].greenhouse_gas_score`	Number	Greenhouse gas score from 1 to 10.Example: 8
Summary`summary`	Text	Cheapest vehicle to run and annual savings over the most expensive.Example: 2024 Tesla Model 3 RWD — Auto (A1) is the cheapest to run, saving $700 per…

Example result

For Cars: 2024 Toyota Camry Hybrid, 2024 Tesla Model 3

JSON

{
  "cars": [
    {
      "car": "2024 Toyota Camry Hybrid",
      "city": 51,
      "link": "https://www.fueleconomy.gov/feg/noframes/47092.shtml",
      "note": null,
      "highway": 53,
      "combined": 52,
      "fuel_type": "Regular",
      "vehicle_id": "47092",
      "efficiency_unit": "MPG",
      "vehicle_matched": "2024 Toyota Camry Hybrid LE — Auto (AV-S6), 4 cyl, 2.5 L",
      "co2_grams_per_mile": 170,
      "annual_fuel_cost_usd": 1250,
      "electric_range_miles": null,
      "greenhouse_gas_score": 8
    },
    {
      "car": "2024 Tesla Model 3",
      "city": 140,
      "link": "https://www.fueleconomy.gov/feg/noframes/47909.shtml",
      "note": null,
      "highway": 125,
      "combined": 132,
      "fuel_type": "Electricity",
      "vehicle_id": "47909",
      "efficiency_unit": "MPGe",
      "vehicle_matched": "2024 Tesla Model 3 RWD — Auto (A1)",
      "co2_grams_per_mile": 0,
      "annual_fuel_cost_usd": 550,
      "electric_range_miles": 272,
      "greenhouse_gas_score": 10
    }
  ],
  "summary": "2024 Tesla Model 3 RWD — Auto (A1) is the cheapest to run, saving $700 per year versus 2024 Toyota Camry Hybrid LE — Auto (AV-S6), 4 cyl, 2.5 L."
}

Get fuel economy

1 credit

Get official MPG or MPGe, driving range, annual fuel cost, five-year savings, and emissions for all matching vehicle versions. Fuel costs use current fuel prices and EPA’s 15,000-mile-per-year assumption; plug-in hybrid costs include gasoline and electricity.

What you provide

Field	Type	Required	Description
Make`make`	Text	Required	Vehicle make, for example Toyota.Example: Toyota
Year`year`	Number	Required	Model year, for example 2022.Example: 2022
Model`model`	Text	Required	Model name, for example RAV4 or Model 3.Example: RAV4
Version`version`	Text	Optional	Optional words identifying trim, engine, transmission or drive, for example Hybrid AWD.Example: Hybrid AWD

What you get

Field	Type	Description
Versions`versions`	List	Matching official vehicle versions.
Make`versions[].make`	Text	Make.Example: Toyota
Year`versions[].year`	Number	Model year.Example: 2022
Drive`versions[].drive`	Text	Drive type.Example: All-Wheel Drive
Model`versions[].model`	Text	Full model and trim name.Example: RAV4 Hybrid AWD
Engine`versions[].engine`	Text	Engine or electric motor.Example: 2.5 L, 4 cylinders, SIDI & PFI; Hybrid
City Mpg`versions[].city_mpg`	Number	City miles per gallon on liquid fuel.Example: 41
Page URL`versions[].page_url`	Text	FuelEconomy.gov vehicle page.Example: https://www.fueleconomy.gov/feg/Find.do?action=sbs&id=45009
City Mpge`versions[].city_mpge`	Number	City miles per gallon gasoline equivalent for electric driving.Example: 134
Fuel Type`versions[].fuel_type`	Text	Vehicle fuel type.Example: Regular
Vehicle ID`versions[].vehicle_id`	Text	FuelEconomy.gov vehicle ID.Example: 45009
Highway Mpg`versions[].highway_mpg`	Number	Highway miles per gallon on liquid fuel.Example: 38
Range (miles)`versions[].range_miles`	Number	Electric vehicle range in miles.Example: 358
Combined Mpg`versions[].combined_mpg`	Number	Combined miles per gallon on liquid fuel.Example: 40
Highway Mpge`versions[].highway_mpge`	Number	Highway miles per gallon gasoline equivalent for electric driving.Example: 126
Transmission`versions[].transmission`	Text	Transmission.Example: Automatic (AV-S6)
Combined Mpge`versions[].combined_mpge`	Number	Combined miles per gallon gasoline equivalent for electric driving.Example: 131
Fuel Price Unit`versions[].fuel_price_unit`	Text	Fuel price unit, such as gallon or kWh.Example: Gallon
Co2 Grams Per Mile`versions[].co2_grams_per_mile`	Number	Tailpipe CO2 emissions in grams per mile.Example: 223
Vehicle Description`versions[].vehicle_description`	Text	Vehicle year, make, model, engine, transmission and drive.Example: 2022 Toyota RAV4 Hybrid AWD, 2.5 L, 4 cylinders, SIDI & PFI; Hybrid, Automatic…
Annual Fuel Cost (USD)`versions[].annual_fuel_cost_usd`	Number	Official annual fuel cost in US dollars.Example: 1600
Annual Miles Assumed`versions[].annual_miles_assumed`	Number	Annual mileage used to calculate fuel cost.Example: 15000
Electric Range (miles)`versions[].electric_range_miles`	Number	Plug-in hybrid electric range in miles.Example: 25
Greenhouse Gas Score`versions[].greenhouse_gas_score`	Number	EPA greenhouse gas score from 1 to 10.Example: 8
Five Year Savings (USD)`versions[].five_year_savings_usd`	Number	Five-year fuel cost savings versus the average new vehicle in US dollars; negative means extra cost.Example: 3500
Fuel Price USD Per Unit`versions[].fuel_price_usd_per_unit`	Number	Current fuel price in US dollars per stated unit.Example: 4.32
Secondary Fuel Price Unit`versions[].secondary_fuel_price_unit`	Text	Unit for secondary fuel price.Example: kWh
Secondary Fuel Price USD Per Unit`versions[].secondary_fuel_price_usd_per_unit`	Number	Electricity or other alternative fuel price for dual-fuel vehicles.Example: 0.15

Example result

For Make: Toyota, Year: 2022, Model: RAV4, Version: Hybrid AWD

JSON

{
  "versions": [
    {
      "make": "Toyota",
      "year": 2022,
      "drive": "All-Wheel Drive",
      "model": "RAV4 Hybrid AWD",
      "engine": "2.5 L, 4 cylinders, SIDI & PFI; Hybrid",
      "city_mpg": 41,
      "page_url": "https://www.fueleconomy.gov/feg/Find.do?action=sbs&id=45009",
      "city_mpge": null,
      "fuel_type": "Regular",
      "vehicle_id": "45009",
      "highway_mpg": 38,
      "range_miles": null,
      "combined_mpg": 40,
      "highway_mpge": null,
      "transmission": "Automatic (AV-S6)",
      "combined_mpge": null,
      "fuel_price_unit": "gallon",
      "co2_grams_per_mile": 223,
      "vehicle_description": "2022 Toyota RAV4 Hybrid AWD, 2.5 L, 4 cylinders, SIDI & PFI; Hybrid, Automatic (AV-S6), All-Wheel Drive",
      "annual_fuel_cost_usd": 1600,
      "annual_miles_assumed": 15000,
      "electric_range_miles": null,
      "greenhouse_gas_score": 8,
      "five_year_savings_usd": 3500,
      "fuel_price_usd_per_unit": 4.32,
      "secondary_fuel_price_unit": null,
      "secondary_fuel_price_usd_per_unit": null
    }
  ]
}

For developers

Call it from your code with one request. Change the values in input to run it on new data. To get an API key, open Developers at the bottom of Studio, turn on Developer mode and go to API keys.

cURL

curl 'https://api.fous.com/v1/query' \
  --fail-with-body --silent --show-error --max-time 180 \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H 'Content-Type: application/json' \
  --data-raw '{
  "api": "@fueleconomy-gov",
  "visibility": "public",
  "operation": "compare_cars",
  "version": 1,
  "input": {
    "cars": [
      "2024 Toyota Camry Hybrid",
      "2024 Tesla Model 3"
    ]
  },
  "response": {
    "format": "json"
  }
}'

What you can do with it

Compare fuel costs across vehicle options
Identify vehicles with longer electric driving range
Review emissions and greenhouse gas scores
Estimate annual fuel costs for a vehicle
Find fuel economy ratings for a specific trim

Questions about FuelEconomy.gov

Can I run it with my own inputs?

Yes. Change the inputs in Studio and press Run, or send new inputs from your code, or ask a connected AI assistant.

Can I call this FuelEconomy.gov tool as an API?

Yes. Send a POST request to /v1/query with your Fous API key and the inputs, and get JSON back.

How much does it cost?

Each completed run costs 1 credit. Failed runs without a completed receipt are free; completed work can remain charged if delivery is interrupted. With pay as you go, a credit costs 1¢. Monthly plans cost less per credit.

Do I need a FuelEconomy.gov account?

No. You only need a Fous account.

How current is the data?

Fous gets the data from fueleconomy.gov when you run it. Some results are reused for up to 24 hours, and results that use your account or key are never reused. It was last verified on Sep 29, 2026.