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Automotive glossary

Fuel Tank

The fuel tank stores the car's fuel and houses the fuel pump and level sender.

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What is Fuel Tank?

Most modern tanks are plastic; some are steel. Baffles reduce fuel movement. Vents lead to the EVAP system. Tank capacity in the documents is usually the nominal volume; actual fill can vary. Diesel cars may have a separate AdBlue tank. Plastic tanks can be shaped around other parts, which saves space. Fuel tank straps and mounts should be checked for corrosion on older cars.

How it works

The pump draws fuel from a reservoir inside the tank.

Why it matters for your car

Running very low can overheat in-tank pumps. Damage from impacts can cause leaks.

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