If you're wondering whether those motor vehicle service notifications are legit, the answer is maybe. It depends on the company and the state in which you live. Some states have laws that require companies to disclose certain information about their services, including pricing, before performing any work. Other states don't have such laws, so it's up to the consumer to do their research.
There are many legitimate motor vehicle service companies out there. However, there are also some that exist solely to scam people out of their money. If you're unsure about a company, it's always best to do your research before agreeing to any services. Checking online reviews can be a good way to get an idea of what others have experienced with a particular company.
In general, it's always important to be cautious when someone tries to sell you something unexpectedly or pressures you into making a decision on the spot. If something feels off, it's probably best to walk away and find another provider.