The answer depends on what you wish to measure: its length (or width or height), its mass, it fuel efficiency, it maximum speed, its maximum acceleration, its tightest turning circle, its power output, its drag, etc.
Probably kilometers or miles :)
You can use either unit of measurement.
kg. (kilograms), or tons (thousands of kg.).
Tons for a rough and ready answer, kilograms for a more accurate answer.
meters
The meter.
what is the most suitable unit to measure the length of a car key
miles or kilometers
Probably kilometers or miles :)
A kilogram
Feet
mass
eathier meters or feet
You would measure the length of a car in metres. An average car is about 4m
Gallons or liters.
Meters
You would measure the length of a car in metres. An average car is about 4m