Definition: The weight of an automobile with standard equipment, all necessary operating consumables (e.g., fuel, oil, coolant), and ready for operation.
Appropriate Unit of Mass:
Kilograms (kg) are the most appropriate unit for measuring the curb weight of an automobile.
Grams, liters, and milligrams are not suitable:
Grams (g) are too small.
Liters (L) measure volume, not mass.
Milligrams (mg) are extremely small and impractical.