The fuel tank in the Audi A4 quattro is a small miracle of technology. Here the fuel tank is photographed from below with the rear axle removed. In this photo, the fuel tank capacity is indicated by arrows wherever they are located. The irregular shape of the fuel tank allows for an increase in capacity without reducing the trunk volume.
The fuel tank in front-wheel drive vehicles is shaped differently than in all-wheel drive vehicles. This is also due to the different capacity of 60 liters (all wheel drive) and 62 l (front wheel drive). In order to make the trunk bottom relatively flat with the possibility of loading additionally towards the passenger compartment, the fuel tank is located exactly in the area of the rear axle under the floor. There is a sufficiently large "safety distance" to the rear of the car to avoid damage in a rear impact. The fuel tank itself is made of synthetic material, which has almost unlimited possibilities for molding.
The Council: Before you start any work in the fuel system, you must always disconnect the battery cable connected to the "mass". Unintended electrical connections can lead to dangerous sparking.
This article was copied from an online resource: AUDIMANUAL.ru