Since you have an early 2021 car, you most likely have radar. The Vision only based cars are a completely different experience. That has been made clear over and over here. People with radar cars tell stories about how great TACC and AP work followed by dozens of people with Vision cars making the case that they really do have a problem. Listen, I appreciate your long response but I and many many people aren't going to convinced that the issues with TACC and AP in our Vision cars is either our problem or just our imaginations. My cameras are clean and calibrated and I have not one but two Vision based cars (A September build M3 and a October build MY.) Both behave the same with the same issues in the same circumstances. I had three late model cars with TACC, all produced since 2017. A Chevrolet, a Ford, and a Hyundai. All had forward collision detection, emergency braking, and speed matching cruise contol. In about 70k miles, i had the forward collision detection and emergency braking happen maybe a dozen times and that is across all 3 vehicles over many many miles. Although Tesla Vision only TACC generally works well on divided highways, setting TACC in either one of my Vision only cars in any other circumstance will guarantee false positive collision detection and phantom braking where all of my other cars would have zero problems. Two lane roads are awful. Truck coming towards you in the other lane. BEEP BEEP BEEP from the collision detection. Seeing the top of a car on the other side of slight rise the the road. BEEP BEEP BEEP from the collision detection. Driving on the highway with a semi passing you, BEEP BEEP BEEP from the collision detection. It's s repeatable and predictable. And no other brands vehicles with TACC that i have owned were like this. Not even close.
I know you might say "Well, TACC is considered still in beta" or "It isn't meant to be used on anything other than divided highways." If that is the case, than I stand by my. statement that Tesla Vision only TACC is completely inferior than radar based systems. I'm not claiming that we are all in terrible danger of TACC caused firey deaths. I'm saying that many Vision based owners, including myself who happens to own two of them, are tired of having our cars scream at us that we are at risk for a collision when there is zero danger. Somehow, other manufacturers have reliable TACC that can be used on any roads in any circumstamces. Even pre-Vision Teslas do significantly better than post Vision cars.
Tesla is supposed to have the best software im the industry. If that is the case, then why have all of these legacy manufacurers mastered a domain where Tesla can't? It boils down to my first point. Radar based TACC (or radar + Vision) works significantly better than the junk we Vision owners are stuck with. If you are have little to no false collision detections and phantom braking, you are either only using TACC in the optimal situations or you have a pre Vision car.
