How to Check a Car's Mileage?
3 Answers
To check a car's mileage, look at the odometer, usually indicated by ODO, with the value followed by the unit KM, which represents the car's total mileage. This helps the driver know the distance traveled. Due to differences in car models and brands, the dashboard display may vary. The car odometer consists of a stepping motor, a six-digit decimal counter, internal transmission gears, etc. Its function is to convert the pulse signal output by the vehicle speed sensor during operation into a specific frequency pulse signal through signal processing circuit frequency division and power amplification.
Checking a car's mileage is quite straightforward. I've developed a habit of glancing at the dashboard as soon as I get in the car, where there's a digital display showing the total mileage in kilometers or miles, which automatically lights up when starting the engine. Besides the dashboard, modern vehicles also allow reading this data via OBD scan tools plugged into the port, which is particularly convenient for DIY enthusiasts who love tinkering. In daily driving, mileage helps us track maintenance schedules, such as oil changes every 5,000 kilometers or brake pad inspections. I personally record it monthly to prevent forgetting. Used car buyers should be wary of potential odometer fraud—don't just trust the numbers; it's best to verify authenticity through vehicle history reports like Carfax or maintenance records. In the long run, regularly monitoring mileage can help avoid major repairs, saving both money and ensuring safety.
As a frequent car changer, I often use small OBD interface devices or mobile apps connected to scanners to check mileage, which is simple and takes just a few minutes. While driving, key data is directly displayed on the dashboard, usually in front of the steering wheel, appearing right after startup. I remember in the used car market, high-mileage vehicles often show severe tire and seat wear—you can roughly estimate by touching and inspecting. Electronic tools like maintenance apps can also remind you of service times, helping with worry-free upkeep. On the safety side, mileage leaks can expose abuse, so timely checks help prevent risks.
