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Autopilot Questions

Recent new owner, 2021 M3 LR-AWD, just took the first road trip between Los Angeles and San Diego.

When I'm driving 70-80 mph and the freeway curves to the right or left, there seems to be a small lag for the Autosteering to catch up. For example, if the lane curves to the right, the car will briefly move closer to the left edge of the lane. It's as though the system doesn't anticipate what's ahead. Is this normal?

When using the cruise control, the car will slow when the car ahead slows. But if the car ahead brakes and slows more quickly, will the Autopilot sense this and apply the brakes?
 

EVRider-FL

Active Member
Aug 18, 2015
1,875
1,071
South Florida
Normally the car will slow down for curves on the highway when using Autosteer, but sometimes it won't slow enough and you'll drift towards the outside lane marker, especially if you're going that fast.

If you're using TACC, with or without Autosteer, your car will stop completely when appropriate. However, that depends on your car being able to see the other car stopped in front of you. If the obstacle pops into view suddenly, you might not stop in time.

These are just two examples of many reasons why you need to be ready to intervene at all times.
 

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