For the 2018 Volkswagen Jetta, the definition of high mileage depends on the vehicle's maintenance condition and usage environment. In Malaysia, it's generally normal for a car to cover about 20,000 to 30,000 kilometres per year. So, if a 2018 Jetta has a total mileage of over 100,000 kilometres, it can be regarded as a high - mileage vehicle. However, as long as you regularly replace key components such as engine oil, transmission fluid, and timing belts, and follow the manufacturer's maintenance recommendations, the vehicle can still stay in good condition even with high mileage. It's worth noting that turbocharged engines and DSG transmissions require more meticulous maintenance. It's recommended that high - mileage owners shorten the maintenance intervals to ensure durability. Moreover, when buying a used Jetta, besides paying attention to the mileage, you should also check the maintenance records and the actual condition of the vehicle. For example, rubber parts like shock absorbers or engine mounts usually need to be replaced after 80,000 kilometres.
