Hi there, @Tildanor. Welcome to the Fitbit Community Forums. Thanks for bringing this to my attention. I'm sorry to hear that your Versa 4 logged a lot of steps while driving. I understand your concern and how important is to you to get accurate step count as well as you heart rate data, I will do my best to help you with this!
As you might have seen in other posts, wrist Fitbit devices count steps depending on the movement of your arms. Fitbit has worked hard to make sure that our devices do not pick up false steps or activity recordings while driving. Unless you're driving in a car with a very stiff transmission or on bumpy roads, your device should not give you false readings. Also, if you place it in a surface with something vibrating or if you make hard hand movements.
There's no driving mode on Versa 4 or any other Fitbit devices you can use, however, there are ways you can prevent this from happening while you drive:
1. You can plug your Fitbit device into the charging cable while you are driving -- the Fitbit will not count steps while it is charging.
2. You can log the driving manually by following the steps in this article. We use height to estimate your walking and running stride lengths, you may want to measure and manually adjust these values if your legs are longer or shorter than average. For more information, please see How does my Fitbit device calculate my daily activity?
On a side note, keep in mind that we use height to estimate your walking and running stride lengths, you may want to measure and manually adjust these values if your legs are longer or shorter than average. For more information, please see the help article Talanthas has shared with you.
In addition, confirm the following is correct in the Fitbit app:
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