1. Is the vehicle mileage calculated by GPS/Beidou satellite positioning system accurate or not?

　　Answer: The mileage calculated by GPS and Beidou satellite positioning systems is the actual displacement of GPS/Beidou satellite locator (hereinafter referred to as GPS locator), and the accuracy may vary slightly depending on different GPS locator devices. Generally, GPS locators can be divided into two types: those with and without drift removal algorithms. GPS locators without drift removal algorithms have significant mileage differences due to the influence of GPS signal strength factors, while GPS locators with drift removal algorithms are relatively accurate.

　　2. What is the error between the mileage calculated by the GPS/Beidou satellite positioning system and the mileage on the vehicle odometer

　　Answer: The actual measurement values on the highway shall prevail. Because the GPS locator is the actual displacement distance of the vehicle, the mileage calculated by GPS is basically consistent with the actual distance, with an error generally not exceeding 1%. The odometer data is calculated based on the speed of the vehicle's tires and is influenced by factors such as tire wear and pressure. The error between the odometer data and the actual distance is generally within 3%, and the older the vehicle, the greater the error. Therefore, the mileage calculated by GPS locators is generally more accurate than the odometer mileage.

　　Vehicle odometer

　　3. What is the pattern of the difference between the two

　　Answer: The mileage of the GPS positioning system is closer to the actual distance, usually slightly smaller than the odometer data, and the error generally does not exceed 5%

　　Accurate and inaccurate vehicle mileage statistics by GPS/Beidou satellite positioning system

　　1. Is the vehicle mileage calculated by GPS/Beidou satellite positioning system accurate or not?

　　Answer: The mileage calculated by GPS and Beidou satellite positioning systems is the actual displacement of GPS/Beidou satellite locator (hereinafter referred to as GPS locator), and the accuracy may vary slightly depending on different GPS locator devices. Generally, GPS locators can be divided into two types: those with and without drift removal algorithms. GPS locators without drift removal algorithms have significant mileage differences due to the influence of GPS signal strength factors, while GPS locators with drift removal algorithms are relatively accurate.

　　2. What is the error between the mileage calculated by the GPS/Beidou satellite positioning system and the mileage on the vehicle odometer

　　Answer: The actual measurement values on the highway shall prevail. Because the GPS locator is the actual displacement distance of the vehicle, the mileage calculated by GPS is basically consistent with the actual distance, with an error generally not exceeding 1%. The odometer data is calculated based on the speed of the vehicle's tires and is influenced by factors such as tire wear and pressure. The error between the odometer data and the actual distance is generally within 3%, and the older the vehicle, the greater the error. Therefore, the mileage calculated by GPS locators is generally more accurate than the odometer mileage.

　　Vehicle odometer

　　3. What is the pattern of the difference between the two

　　Answer: The mileage of the GPS positioning system is closer to the actual distance, usually slightly smaller than the odometer data, and the error generally does not exceed 5%

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