A commercial weighbridge would be appropriate for its weight.
A tape measure for determining its dimensions.
Its speed would be measured by timing it with a stopwatch over a known distance.
Its power output would be measured on a dynamometer, and the same apparatus will enable you to measure the output torque.
The answer depends on the characteristic which is to be measured: its mass, weight, length, top speed, fuel efficiency and so on. Each one of these will require a different unit of measurement. It is not possible to answer the question because you have not specified which aspect you wish to measure.
kilometers
In metric units, it will be metres and decimals thereof.
In imperial units, it will be feet and inches.
Weight of? Speed of? Volume of? Depends on what you are referring to...
The length of a car is measured in metres.
The mass of a car is measured in kilograms.
what unit of measure is used when measuring a car
A kilometer is a unit of length. It is equal to a thousand meters (since "kilo" means thousand).
There can be no equivalence. A centimeter is a measure of length or distance in 1-dimensional space, while a milliliter is a measure of volume in 3-dimensional space. The two measure different things and, according to basic principles of dimensional analysis, any attempt at conversion from one to the other is fundamentally flawed. If a length could be converted to a volume, then you would be able in principle to calculate how many gallons tall you are.
Any ruler that has a division in centimeters. For somewhat longer distances you measure in meters. To know how long that is, take a piece of rope between your fingertips and measure the distance from the tip of those fingers to the outside edge of your other shoulder. If you're about 12 years or older, that distance is a meter.
For everyday use vehicles would normally be measured in metres, eg 5.2 metres. This is the measurement that you would supply to a ferry or truck transporting firm for example. On the other hand, if components of the vehicles construction are being measured, as in the distance between seats etc, then it is more usual to use millimetres as this measurement is more exact.
Miles
You can use either unit of measurement.
centimeters
a tape measure of at least 25 feet or more
a meter
A kilogram
Feet
Is a customer unit used to measure
mass
what is the most suitable unit to measure the length of a car key
what unit of measure is used when measuring a car
You'd measure the length of a car in metres.