Thanks to the development of technology, auto expertise controls have become both faster and more reliable. Thanks to auto expertise devices designed according to the tonnage and dynamics of vehicles, vehicle buyers and sellers can buy and sell in a more reliable environment. Vehicles that come for auto expertise are subjected to many tests. These include dyno (dynamometer) test, suspension test, brake test, side slip test and paint tests.

During auto expertise, the vehicle is connected to many devices. The auto expertise report starts to process during this process. As a result of each passing minute, new and accurate data about the vehicle is processed into the report.

The purpose of auto expertise is to see the current condition of the vehicle and control the vehicle based on realistic data before buying and selling. Therefore, auto expertise should be done just before buying a vehicle. A current auto expertise report will direct the vehicle buyer more accurately. A report from the past may mislead the vehicle buyer.

The auto expertise report is a document that reveals that a vehicle has no changed or unchanged parts, all its damages and deficiencies. When the vehicle enters expertise, the first process it goes through is paint control. In this process performed with measuring devices, the results are compared with factory data. If there is paint in any part of the vehicle, this situation is seen thanks to the auto expertise report. The second information in the report is the dyno (dynamometer) test. In this test, the engine power of the vehicle and whether there is a problem in the power transmission assembly of the vehicle are controlled. After engine, radiator and battery controls, the vehicle information is entered into the report and the next process is started. In addition to the suspension test, the side slip test and brake test are other tests documented with the auto expertise report. The vehicle's road holding, suspension efficiency, how much it slides right and left within 1 km, and brake quality are measured and reported with these tests. The reported document should be kept by the vehicle buyer.

Many questions are asked about the validity period of vehicle expertise report. With the regulation published on August 15, 2020, clear answers to these questions have been presented to vehicle owners and those who want to own vehicles. According to the new regulation, the auto expertise report given after the expertise process must be at most 3 days old in order to carry the nature of an official document. If a vehicle received an auto expertise report 4 days before sale, that report will not be considered as an official document. With this arrangement, unanswered questions about the validity period of auto expertise report have also ended. When the new regulation is compared with the old regulation, in the old regulation, the auto expertise report did not have a specific validity period. For vehicle sales transactions to take place, it was sufficient for the auto expertise report not to be very old to be an official document. However, according to the new regulation, the auto expertise report must be issued at most 3 days before the sale.

Engine oil used in vehicles is in the position of protector of mechanical working order. Therefore, engine oil is used for engine parts to work at full performance and to be protected against wear. However, the problem of engine oil burning that vehicle owners frequently encounter causes various problems in the vehicle.

The engine, which is the most important component of the vehicle, produces performance through the harmonious operation of many parts. One of the most important parts in engines is the engine mount. Engine mount is also known as engine bracket. The function of the engine mount is much more important than anticipated within the engine system. Because this part ensures that the engine is fixed to the skeleton of the vehicle. At the same time, another function of the engine mount is to minimize vibrations from the engine. Therefore, among the symptoms of engine mount failure, there may be symptoms such as the driver feeling intense and high-level vibration. This situation may vary according to the age and brand of the vehicle. In addition, engine mount failure can also cause a hard and dull sound to emerge.

Engines in vehicles differ according to the type of energy they use. Vehicles with engines that run on diesel are defined as diesel engine vehicles. The parts in the vehicle also differ according to the engine type of the vehicle, that is, the type of energy it uses. The fuel pump is also a part found only in diesel vehicles in this direction. The basic function of the fuel pump, also known as the fuel pump, is to take diesel from the tank and deliver it to the engine for operation. Therefore, the fuel pump is a part that has vital importance for diesel vehicles.