Examples
of fuel consumption in Miles per Gallon (MPG)
Table:

Volkswagen
Jetta
Model Year: 2019
( turbocharged 1.4L, Manual 5 speed, Regular
Gasoline )
City: 28.34 MPG (8.3 L/100 km)
Highway: 39.87 MPG (5.9 L/100 km)

Nissan Sentra
Model Year: 2019
( 4 cyl, 1.8 L, Manual 6 speed, Regular Gasoline
)
City: 27
Highway: 35 
Honda
Civic
Model Year: 2019
(1.5 L, 4 cyl, Automatic (variable gear ratios), Turbo, Regular Gasoline)
City: 32
Highway: 42 
Toyota Corolla LE Eco
Model Year: 2019
(1.8 L, 4 cyl, Automatic (variable gear ratios), Regular Gasoline)
City: 30
Highway: 40

Fuel efficiency is
the efficiency of energy contained in a carrier fuel to kinetic
energy or work. Fuel efficiency also mean the output carrier gets
for a unit amount of fuel amount such as "miles per gallon"
or "liters per 100 km" for a car (called fuel economy).
Fuel economy is the amount of fuel (gas) required to move
a car over a given distance. Car
fuel efficiency can be calculated in either miles per gallon
or l/100 km.
