The fuel tank is one of the main components of the fuel system, on which the engine's operation directly depends. Car owners often wonder where the fuel tank is located in a car, especially when it comes to old models like the VAZ 2107 or modern foreign cars. Below, we will examine in detail where it is placed, what it consists of, and why it is so important to know its exact location.

Location of the fuel tank in a car

In the vast majority of modern passenger cars, the fuel tank is located under the rear sofa or in the rear part of the body, between the rear axle and the trunk compartment. This layout is considered the safest and most convenient — it ensures better weight distribution and protects the reservoir in the event of an accident. If you look at the car from below, the tank will be visible as a metal or plastic reservoir secured with steel straps and bolts. In many cars, the filler neck is routed to the left or right rear fender — this also indicates the tank's location.

Where is the fuel tank located on the VAZ 2107

On classic VAZ models, including the VAZ 2107, the fuel tank is located in the trunk, behind the rear seat backrest. The engineers of the "Zhiguli" chose this layout for several reasons:
  1. Simplicity of design — the tank is easily accessible for maintenance and replacement.
  2. Safety — in a frontal collision, the reservoir remains undamaged.
  3. Compactness — this placement does not interfere with the suspension or the driveshaft.
The filler neck on the VAZ 2107 exits through the right rear fender, and the tank itself is made of metal and holds approximately 39 liters.

Design and operating principle

The fuel tank's construction includes several key parts:
  • Housing — a sealed container made of metal or plastic.
  • Fuel pump — ensures fuel delivery to the engine.
  • Fuel level sensor — informs about the amount of remaining liters.
  • Ventilation valves — prevent pressure inside the tank from rising too high.
In modern cars, the tank often has a complex geometry, which allows it to fit more conveniently into body niches and reduce the noise of sloshing fuel while driving.

Why you need to know where the tank is

Understanding the exact location of the fuel tank is necessary for several reasons:
  1. Refueling — the driver needs to know in advance which side the filler neck is on to correctly pull up to the pump.
  2. Safety — during welding work, repairs, or lifting on a jack, sparks and pressure near the tank should be avoided.
  3. Maintenance — this concerns cleaning, replacing the fuel pump, or fixing leaks.

Where the tank is located on different types of cars

  • Passenger cars — under the rear seat or in the trunk.
  • Trucks and buses — on the side under the frame, to simplify access for refueling.
  • Crossovers and SUVs — closer to the center of the body, for better weight distribution.
Now you know where the fuel tank is located in a car and why this information is important for every driver. In most passenger cars, the tank is in the rear part of the body, and in the VAZ 2107 — in the trunk, behind the rear seat. This is a simple and reliable solution, proven over the years. When caring for your car, do not forget to periodically check the condition of the tank, especially if the car is no longer new: inspect it for corrosion, leaks, or dents. After all, a functioning tank is the key to stable and safe engine operation.