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In the context of vehicles, it is the container or receptacle designed to store fluids essential for the operation of the engine or auxiliary systems, such as fuel, oil, or coolant.
Reviewed 11.11.2026 · Version 2 · Scope: España
The term 'tank' in automotive contexts specifically refers to the tanks or receptacles that store liquids. Unlike its legal or banking usage, here it refers to a mechanical component. Its design must ensure tightness, corrosion resistance, and adequate capacity for the vehicle's intended usage cycle. The RAE generically defines 'depósito' as 'a place or container where something is deposited' and specifies 'a container for fluids in a vehicle,' which validates this technical interpretation.
A hypothetical driver fills the gasoline tank of their compact car to the 'full' mark to ensure sufficient range for a long-distance trip, thereby avoiding the risk of running out of fuel on the road.
It is a critical component for vehicle safety and operability. A damaged tank can cause fuel leaks, fire risk, or environmental contamination. Additionally, the tank's capacity directly determines the vehicle's range, a key factor in trip planning and energy efficiency.
It should not be confused with 'legal deposit' (the obligation to deliver copies of publications to libraries) or 'bank deposit' (a contract for the custody of money). In the vehicular field, it should also not be confused with the fuel 'filter' or 'pump,' which are distinct components, although related to the fuel supply system.
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