Car Whisperer

As you progress through the game you'll inevitably pick up some quirks on your car; where it does "weird stuff" like the door opening whenever you turn right - albeit there are hundreds of combinations.

Mid-game-ish you'll get access to a Quirk Identification System upgrade for the garage; install this and use it to diagnose and fix the quirk. Pay attention to the behavior when driving so you can understand the specific thing that the car does, and the specific action or actions that you take to trigger it - the ID system is very specific! Note you can upgrade the station too to make it easier, but this shouldn't be necessary for this achievement.