MPG {LSTbook}

Fuel economy measurements on US car models

Description

Fuel economy measurements on US car models

Usage

data(MPG)

Format

A data.frame object with one row year for each model or configuration of automobile or light truck sold in the US.

• manufacturer: name of company making the vehicle

• division: name of the company division making the vehicle

• model: vehicle model name

• fuel_year: fuel consumed in 10,000 miles (roughly 1 year.)

• CO2_year: Carbon dioxide produced per year, in kilograms. 10,000 miles of driving is taken to represent a year. Note, Carbon-per-year (without the oxygen) is roughly one-quarter the mass of CO2-per-year.

• hybrid: whether the car is a hybrid

• class: the type of vehicle, e.g. midsize, compact, large, SUV

• vol_passenger: volume for passengers (cubic feet)

• vol_luggage: volume for luggage (cubic feet)

• doors: number of passenger doors

• mpg_city: Estimated fuel consumption in city driving (miles per gallon)

• mpg_hwy: like mpg_city but for highway driving

• mpg_comb: like mpg_city but for a standard combination of city and highway driving

• EPA_fuel_cost: Annual fuel cost using a standard price for gas and a standard miles per year of driving.

• valves_exhaust: how many exhaust valves per cylinder

• valves_intake: how many air intake valves per cylinder

• CO2city: estimate of carbon-dioxide (grams/mile) production per mile in city driving.

• CO2hwy: like CO2city but for highway driving

• CO2combined: like CO2city but for a standard mixture of city and highway driving

• hatchback: is there a hatchback rear door

• start_stop: does the vehicle have a system to stop the engine when idling

• cyl_deact: are cylinders in the engine deactivated when power demand warrants

• fuel: the kind of fuel used.

  • G = regular unleaded gasoline,

  • GM = mid-grade recommended,

  • GP = premium unleaded recommended,

  • GPR = premium unleaded required,

  • DU = diesel (ultra low sulfur)

• drive: type of drive, e.g. front-wheel, 4-wheel, ...

• regen: wheels with regenerative breaking (for hybrids)

• n_gears: number of transmission gears

• n_cyl: number of engine cylinders

• displacement: engine displacement (liters)

• transmission: transmission type

  • A = automatic,

  • M = manual,

  • AM = automated manual,

  • AM = automated manual (paddles),

  • CVT = continuously variable,

  • SCV = continuously variable with selection paddles,

  • SA = semi-automatic

• lockup_torque_converter:

• air_aspiration:

• model_year:

Source

Data from the US Environmental Protection Agency (EPA) available at https://www.fueleconomy.gov/feg/download.shtml. The file for 2019 model-year vehicles is https://www.fueleconomy.gov/feg/epadata/19data.zip