How to calculate how many miles a car has traveled?

Question

Python

There is a website for an oil change shop. There is an office where the car owner can go in and see when he changed the oil and when the next change (mileage), this data is filled in by the cashier when changing the oil. We want to implement SMS notification. How would you calculate so that you can send SMS when you need to change it? Just keep track of time? Ask the car owner how long it usually takes to change the oil and enter it into the database and send SMS based on this data?

Answer 1

As an option for the future: if you already have some kind of base of regular customers who have contacted you several times, then use statistics to calculate the average period between oil changes. You can display trends, calculate the average, display other patterns (maybe someone prefers to change the oil with reference to the salary, then it will be, for example, the first weekend of the month). It is better to keep several values ​​​​and track which one will be most accurate over time for each client.
Also, in the course of the survey, you can clarify some data, for example, whether the client changes the oil only at your place, how often and what distances the client covers by car.
Maybe you can come up with something along those lines.