Here's my experience so far with a 2025 AT. I leased my AT (Tahoe interior, DD Pro, glass roof, basic Surreal Sound) and took delivery on Sept 21st. Everything was pretty great. Fit and finish seems solid. Panel gaps were tight, no rattles in the inside. The only thing I could notice was a little catch in the steering. When making 45+ degree turns in either direction, there would be a little click that could be felt in the steering column. Wasn't something I was going to worry about unless it got worse, which after 1000 miles, it hadn't. My only other complaint would be that the stereo system is kinda garbage. Not only is there little bass, but the little bass there is causes a lot of rattling, coming from the anemic subwoofer itself. The subwoofer and speakers in the basic Surreal Sound are woefully inadequate to handle anything above 35% volume.
One of things I was excited most about was the 2.4.10 software update, with the inclusion of Lane Change Assist. This is where things started to fall apart. After the update (which I got a week after I had the car) HA started to behave oddly. First, LCA would never activate. Even after 100+ miles on 3 lane highways, it would always say "Unavailable" and the lane lines never showed as dashed. The next thing that started happening is that the steering assist would stop without warning if I slowed to below 45ish miles an hour. No warnings, just all of a sudden the wheel icon would show as white and I'd be steering. Caught me off guard a few times. If my speed increased beyond 45, it would activate again. During all of this HA would show as active in the dash.
So, I made a service appointment and dropped the car off on October 14th. I mentioned the steering catch and the rattle coming from the sub. Tech said the steering was totally normal and didn't do anything about it. He added some foam to try and reduce some rattling coming from the sub, but said that it just couldn't handle certain frequencies and would rattle no matter what. Ok fine...
Big problem has been the HA. They're still working on it. So far, they've replaced 3 camera, and the entire ACU (think FSD brain in Telsa). Every time they've made a change, the tech has been instructed to drive the car on the highway to get the cameras to calibrate. So far he has driven over 600 miles and is back at square one. Even with all the new hardware, the car is exhibiting the same symptoms described above. So it's been recommended that he replace ALL the cameras and try calibrating again. I expect an update on Monday or Tuesday. On Monday it will be 3 weeks that they've had the car, nearly the same amount of time I had it.
The good news is I was given a loaner. So for the past 3 weeks I've been driving a '22 Dream Edition Performance, which needless to say has been great fun =) The loaner has worked flawlessly when it comes to HA and LCA. The steering in it also feels way better, even though it has a little creak at times. The loaner has Surreal Sound Pro, which is WAY better. Still weak on the bass, but that's been discussed thouroughly in other threads. But at least the bass it puts out is clean, even with the volume cranked.
Basically, this all a long winded way to say that I think the build quality overall is great. I think my hardware/software issues (camers and ACU) is a bit of an outlier. Seems like they were using older parts still even in the 2025 builds. I was surpised to learn that I had what was considered the "older" camers in the car to start with.
Defintely exicited to get it back, hopefully next week, but in the meantime, I'll continuie to enjoy the DEP.
