A vehicle is composed of a number of auto parts. Over time, it's inevitable that some forms of car service will be performed on any vehicle. Over the lifetime of your vehicle, you will need to replace the tires, windshield wipers, brake pads, battery, spark plugs, and countless other auto parts. The amount of time before a car part will need to be replaced can depend upon a number of factors, including how frequently you drive your car and what your driving habits are.
The HTML version of the manual (in Bulgarian) can be seen here: https://www.avto.bim.bg/statii/avtochasti-kakvo-e-tova-ili-kakvo-ni-ochakva-sled-pokupka-na-avtomobil_arc16.html