How do you check trip mileage on a BMW z4?

To check the trip mileage on a BMW Z4, locate the onboard computer button on the steering wheel or the dashboard controls, depending on the model year. Press the button labeled "BC" or "Trip" to cycle through the display options until you see the trip mileage. This will show you the distance driven since the last reset. You can reset the trip mileage by pressing and holding the same button while displaying the trip distance.