How many miles can you drive a new car before changing oil if put in synthetic oil?

It depends on the specific vehicle and the type of synthetic oil used. In general, most automotive manufacturers recommend changing synthetic oil every 7,500 to 10,000 miles or every 12 months, whichever comes first. However, some synthetic oils may allow for extended drain intervals of up to 15,000 miles or 1 year. Always refer to the owner's manual for the specific recommended oil change interval for your vehicle.