A mechanic reveals what some garages do when a car arrives with a full tank of gas.

Every driver in Spain has had or will have to go to the garage at some point, and it's inevitable that cars will break down or experience minor problems that must be repaired by a professional. Vehicle owners tend to have two things on their minds: the final price of the invoice and the length of time they'll be out of use. However, many other factors come into play that may seem trivial but are actually important.

As a result, very few users in Spain notice the amount of fuel left in the tank when leaving their car at a garage. A mechanic has acknowledged that both a lack of gasoline or diesel and an excess of fuel can hinder the work of professionals, so it's essential to keep this factor in mind the next time you have to leave your car in the hands of someone else for repairs.

Leaving the car in the workshop with too much fuel

If your vehicle is left at the garage with too much fuel, the mechanic working on it will likely have to empty a good portion of the fuel tank to be able to work and carry out the necessary repairs. The reality is that there are certain processes that cannot be performed if there is excess fuel in the car, so it's advisable not to drive it completely full.

Of course, just because it's not recommended to leave your car in the hands of professionals with a full tank doesn't mean you should do exactly the opposite and run it with just a few milliliters of fuel, as this can also be quite harmful. Therefore, it's best to run it with a medium amount: neither at the reserve nor overflowing.

If mechanics encounter a car that 's low on fuel, they'll most likely need to put more gasoline or diesel in the tank. This is because they sometimes have to perform checks that require driving the car for several miles to ensure the repair was carried out correctly or to identify the problem with the vehicle.

When mechanics working in a garage are forced to refuel a customer's car, they will naturally include the price of the fuel in the final bill. Although it's not a huge amount of money, the reality is that it increases the cost of the repair, something that no driver in Spain likes.