1. Make something out of nothing, small hair is a big problem
I believe that you can always see such things in your life. If you know that there is only a small fault in your own things, you will be exaggerated when you ask at the maintenance office. Vehicle maintenance is also prone to this situation. If there is no fault, it means there is a fault. If there is a small fault, it is also said that it is a big problem, and the repair cost will naturally increase. Therefore, it is suggested that you go to a more regular shop for repair and require it to issue a maintenance certificate to ensure double insurance.
This is a typical problem, and it's the same with you. Take the case of adding engine oil. After the unscrupulous businessmen "round off", the specified amount of engine oil is not added or the amount of engine oil is falsely reported to save money and make more money. So remind some novice drivers that they must know the standard amount of oil in advance, and take care to check before and after repair; There are also individual repair shops will change defective parts to cars to deceive consumers that they are imported genuine products, and even there will be a phenomenon of subcontracting, which makes it impossible to prevent.
Not to mention the cost, serious security risks will be caused. In a word, it's better to go to a trustworthy place for repair. In addition, just like the food safety assurance, no matter what maintenance project is carried out, the other party should be required to provide a qualified product certificate. More expensive parts also have a warranty period.
3. Add maintenance items without reason
Having said the inside story of maintenance, let's take a look at the "tricks" that are easy to play in car maintenance. Sometimes car owners just do a little maintenance for their cars, but they can't help the promotion of 4S stores and promise to have a comprehensive maintenance package. When I got the bill, I found that some items were unheard of or unnecessary, which would cost more money. In this case, it is recommended that car owners have their own opinions and check the maintenance details.