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Rivian Owners Report Highway Assist Issues After 2025.26, Rivian Promises Improvements
Rivian’s 2025.26 update has brought one of the biggest shifts yet in driver assistance tech. As we noted earlier this week, Rivian quietly dropped Mobileye from Highway Assist and fully switched over to their own in-house hardware that has shipped with every Gen 2 vehicle. Read our earlier coverage here.
That’s a bold move, but it hasn’t come without growing pains. Many Gen 2 owners, myself included, have noticed that Highway Assist feels rougher than before. Lane centering has definitely taken a step back. Instead of holding the middle, my R1T and R1S now hug the left side of the lane more often than I’m comfortable with. Even when it manages to stay centered, the vehicle tends to wobble inside the lane in a way that feels unstable. On a few occasions, it has even drifted partway into the neighboring lane, which is a hard no for me.
Friend of the site Travis Ketchum also shared similar experiences on Twitter, echoing the same quirks I’ve been seeing. And while this may sound like a step backward, it’s worth remembering that this is Rivian’s first release without leaning on Mobileye. Building out their own ADAS stack is no small task, and it’s going to take iterations to get it right.
The good news: Rivian knows about it. I was able to confirm with Rivian’s Head of Software, Wassym Bensaid, that the company is aware of these Highway Assist issues and is already working on improvements that will roll out in upcoming software updates.
To Rivian’s credit, 2025.26 did bring some wins too. Stop-and-go traffic feels noticeably smoother, and lane changes are quicker and more confident than before. These are promising signs that Rivian’s system has a lot of potential once they iron out the rough spots.
For now, I’ll keep monitoring how Rivian continues to evolve ADAS with each update. This shift away from Mobileye is a huge milestone for the company, and while it may feel messy at first, it sets the stage for Rivian to own the full stack of driver assistance tech moving forward.
Hey Jose! We’ve been complaining about this same dangerous issue with driver assist on generation 1 for 2 years now. It seems no one is listening. What you just described above as dangerous I have been experienced for things since I got the car. And it’s simply unacceptable in 2023 fully electric vehicle of this price.
Glad it’s not just me. My G1 R1S Driver+ experience has progressively gotten worse in my opinion. Ping ponging, hugging lane edges, moving into neighboring lanes, getting confused by road patches, etc have all gotten worse in my experience.
I especially love when I’m using Driver+ and it crosses the lane line so the car then yells at me for crossing the line.
I’ve experienced the exact opposite in my gen 2 R1S. Prior to the most recent update highway assist was super rough and jerky, and my vehicle always hugged the right lane and occasionally drifted into the lane to the right. Since the update it’s been immensely more smooth, less jerky and “sudden” in reacting, and this is the first time since I took possession of my R1S that I feel like it is centering in the correct location in the center of the lane.
Be glad you’re all getting ANY updates. BMW owners of 2022 – 2024 i4 cars are not getting any real updates, other than a recent recall. BMW has pulled the rug from under their customers and obsoleted 2-3 year old cars
I’ll never buy a car that isn’t software defined for this very reason.
Worst thing for me is that the cruise control just shuts off immediately without warning due to lane detection failure.
I had a super scary experience the other day. Going down I-24 in TN and all of a sudden my R1T, while in hands free mode, decided at the last second to go up an exit ramp. Needless to say, I took immediate control, but this was a pretty jarring event. For some reason it seemed to think that was the lane. At 78 miles an hour this could have been a disaster. BE CAREFUL until this is improved!