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AP1 vs AP2 from someone who owns both

Discussion in 'Model S' started by EdisonR, Sep 22, 2017.

  1. EdisonR

    EdisonR Member

    Sep 4, 2015
    Albany, CA
    I took delivery of an inventory model X P100DL on Monday, what a car! I’ll do another post about the FWD and the X in general, right now I want to focus on AP.

    The X comes with AP2 and I have a 2016 S 90D with AP1 that has been my main driver, commute and road trips for a little bit than 1 year now.

    With the S, I am mostly always either running autosteer on the highway or TACC in trafic jams in the city and it just works. Now with the X and AP2, sadly I am disappointed, TAAC is fine but tends to want to brake hard for no good reason and and autosteer is not as smooth as with my AP1 car, let me give some examples:
    • TAAC in San Francisco: while crossing intersections with no lane markers, AP2 basically steers randomly with big swings of the wheel when AP1 would just continue straight and follow the car in front until the lane markers return
    • Autosteer on the bay bridge: I always drive on the left lane on the bridge, going from SF to Oakland, at the beginning of this drive, the lanes are narrow and AP2 moves way too much from left to right as opposed to staying still like AP1.
    • Vehicles entering my lane on highways: AP2 doesn’t see the car in the other lanes like AP1 and detects trucks and motorcycles as cars. I thought this was just cosmetic but it’s not sadly. In two occasion, the AP2 car failed to slow down appropriately with a motorcycle entering my line tight in front of me. This one is very dangerous.
    • Random braking on highway: this sometimes happens with my AP1 car but not as hard. Twice in my commute over the last 3 days, the AP2 X suddenly started braking hard. I think it was for a good reason because a car ahead has slowed down but the response from AP2 is too hard and actually dangerous as I definitely could have been rear ended in these 2 occasions.
    • Big turns on the highway: I take the carpool lane and from Berkeley to the bridge, there’s this big overpass with a large right turn, AP2 overturns, corrects, overturns, corrects as opposed to smoothly following the curve. This is not dangerous but not really inspiring confidence either...

    Today I’ll be driving from Berkeley to Fremont so I’ll be trying AP2 on I-880 and will update this thread.

    I’ve seen many threads that compare AP1 and AP2 and seen comments of almost parity. Well clearly in my experience AP1 is superior and I am a bit afraid of using AP2, maybe it will get better when I have more experience with it.
    Anybody has both AP1 and AP2 and share the same experience?
    • Informative x 1
  2. Haxster

    Haxster Member

    Apr 4, 2016
    Silicon Valley
    I don't have AP1, but, sadly, my experience with AP2 is about the same as yours. And, over the last several months, it doesn't seem to be getting better; and is some respects worse. My wife gets upset when I use it anywhere but on uncongested open highways.

    Maybe that's what can happen when Tesla decides to re-invent someone else's wheel. Still, I remain optimistic that it will get better.
    • Helpful x 1
  3. Rockster

    Rockster Active Member

    Oct 22, 2013
    McKinney, TX
    I have AP1 on my P85 and did a 24-hour test drive not too long ago on an X with AP2 and my experience largely matches yours, too. Even if I were inclined to upgrade to a newer S or X, I wouldn't do so until I felt that my AP2 experience would parallel my AP1 experience and I'm still not convinced we're there yet.
    • Like x 1

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