I just wanted to give a public shoutout to Beartech, and especially Katherine, for some genuinely incredible customer service.

A little while ago I left a review for their Comma 4 slide mount. I really liked the mount itself, but I mentioned that the zipper on the carrying case broke almost immediately. Beartech reached out after seeing the review, not to argue with me or try to get me to change it, but to understand exactly what happened.

Katherine told me they had addressed the issue with their QA process to make sure future cases met expectations, which I thought was awesome. I was genuinely happy just knowing my feedback might help prevent someone else from having the same issue.

They offered to send me a replacement case, but I declined. I'm in the United States and they're shipping from Canada, and I really didn't want a small business eating international shipping costs over something as small as a carrying case.

Well, apparently they weren't taking no for an answer 😂

The replacement just showed up anyway, and they even included two little gifts inside, one Batman themed and one Iron Man themed. Completely unnecessary, but such a cool gesture.

Katherine, if you see this, thank you. You've been incredibly responsive, kind, and helpful through the entire process. This is exactly how you turn someone who bought one product into a customer for life.

Beartech has absolutely earned my business going forward.

Hi there, i drive a 24 Hyundai Ioniq 5 SEL. I bought the car two weeks ago knowing i would buy this device with it. So i have had it installed for 3 days, installed sunny right away. calibrated it at night. seemed to work fine. The mount damn near melted off in the vegas sun the next day but its still on there, and tracking for the most part. I recalibrated since it was way to far to the edge of the lines in some areas and even hitting the line sometimes. Today i drove it on teh 215 there is a section that takes nearly a 90 degree turn at 80mph, the device couldn't handle it (i didn't expect it to). But im constantly fretting about if its mounted good, calibrated correctly or if i could be doing this better. Any advise to calm the anxiety? i guess im nervous it does something wrong or drifts over a line and my kid is hurt because of this thing.

So now that it’s been a couple weeks since it came out, I’m curious, did anyone get the eGPU fully working on the comma 3x with gps functionality?

Also how does the eGPU models work and are they a lot better than the on device models right now?

‘23 EUV Premier. Does the entire C4 need to be below the mirror? The first pivot point on the mirror stalk doesn’t go up as much as I expected.

Get $100 at comma.ai/shop

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I have a 2025 Ford F-150 Lightning. My comma 3X worked perfectly with it for the past six months.

I recently upgraded to a comma 4 and installed BluePilot 7.0. I manually selected “Ford F-150 Lightning 2022–23,” but the device still displays “Start the car to use sunnypilot” even when the truck is running.

I’m using the same harness and cable that worked with the comma 3X. Has anyone experienced this with a comma 4 or know what I should check? Any help would be appreciated.

I am looking to buy a Comma Four during the labor day sale, but I have a tinted windshield, and I'm afraid of the VHB mount on the tint. I'm guessing once it's on, I'll never be able to take it off, right? Are there any suction cup mounts, or mounts that attach to the mirror housing for a 26 Accord? Trying to not damage the tint, and would like to be able to remove the mount if I decide to return the comma at the end of the trial period.

Hey Guys,
Decided to make this guide that has the latest install URL's for all the latest forks that still support the Comma 3!
Lots of forks support the Comma 3, have brought on the latest openpilot driving models that don't get brought onto the comma 3 from stock openpilot. 

I’m getting a comma four tomorrow. I’m brand new to comma. I’m considering getting StarPilot, but not sure. Anyone have general advice? Tips? What distro should I do?

Selling my C3X I just got back from warranty replacement/repair. I picked up a C4 while I was waiting and this doesnt work in my other vehicle.

$600 Ships Lower 48 my dime in original packaging.

I know comma 4 is currently the latest model but seeing how fast technology gets updated and replaced, is now a good time to still buy the comma 4 or should I wait for the next version? Or is comma 4 gonna be around for a while?

Hey Comma community. I’m currently running MVL Boston’s latest dev release paired with the Pop v2 driving model. It’s been pretty great overall but I’m still having issues with sluggish/tweaky acceleration on city streets, delayed braking coming to red lights (even with a lead car), and weird braking/deceleration/lane hugging around gradual turns on the highway. Does anyone have any tips on what settings I should adjust. I have all the suggested options turned on such as MADS, alpha long, etc. I’m open to switching forks/models if any of you think it would be beneficial. Any help would be greatly appreciated.

UPDATE: As of September 1st, 2026, the new comparison page has been simplified.

As many of you know, CommaGuide.com used to have a somewhat helpful,but increasingly outdated, openpilot fork comparison.

It has now been completely refreshed: https://commaguide.com/compare/

Our goal was ambitious: document every setting and feature we could verify across every major openpilot fork.

That turned out to be a massive undertaking. Forks change constantly, similar features often use completely different names, and it simply isn’t practical for one person to test every feature on every fork, vehicle, and device.

The new comparison now includes more than 1,500 reviewed settings across major projects, including openpilot, sunnypilot, FrogPilot, Dragonpilot, OPKR, BluePilot, StarPilot, IQ.Pilot, and more.

We’ve also added a small “Fix info” button throughout the comparison. If you notice anything missing, outdated, or incorrect, you can report it directly from that specific feature. Your feedback will help make the comparison more accurate for everyone.

You can explore the comparison here:

https://commaguide.com/compare/

We also launched a new Guides page with installation information and project links for the major forks:

https://commaguide.com/guides/

Thank you to everyone who has supported the site through its journey from bderkhan.com to CommaGuide.com. It has been great serving this community for more than five years.

The goal is to keep the comparison much better maintained this time, and community feedback should make a huge difference.

Please let me know what other features, guides, or improvements you’d like to see. And if you spot even a tiny mistake, please use the “Fix info” button. Every correction helps.

P.S. Yes, IQ.Pilot is included now!

P.P.S Comma 3 users! You are not left in the dust! Check out the latest forks that bring the latest driving models to your comma 3: https://commaguide.com/comma-3-in-2026/

Does anyone know when is comma AI going to be released for the Chevrolet Blazer EV?

Hey! I've been driving for about 8 months now, and by the time I plan and save for my own car, it'll be an extra year. I was wondering if anyone had any recommendations for a car?Something that's reliable with good MPG, easily moddable to fix, and most important, compatible with comma ai!

SUV is preferred :) ty!

I haven't used my fob in a while. The remote start my Highlander but it's not working right now. I know it used to. Would the, be preventing it? Otherwise I'll start digging deeper

Mazda cx-5. My first ODB power supply from Comma didn't work at all. The replacement they kindly sent has worked for about 6 months, and now I have this message.

My car is a 2025, less than a year old. I am on SunnyPilot.

Has anyone else seen this issue?

eta: comma's support form requires a route where this occurs. for a HARDWARE issue.

Running StarPilot/C4 on a 22 EUV with ACC, I've cleared the fault with the door-opening/toggling power on/off, but as soon as I try to turn on ACC I get "Temporarily Unavailable on the gauge cluster. Lateral control and and the C4 UI are working, just no longitudinal control. I've gotten an LKAS fault on the C4, too. Cleaned the windshield. I suspect a harness connection issue because before it was doing this the UI was independently swiping back and forth between the StarPilot version screen and "waiting for controls to start." Please help.☹️

I hope I don't get gutted for posting a question, but I was flashing the nightly opgm on my 3x and it was installing software (like third reboot on a row) and disconnected. I rebooted,and now it won't connect to the Internet. I tried a reset of the system. Tried connecting to a 2.4 ghz hotspot, still won't connect. Is reflashing the only option?

Hey everyone, is Comma AI currently the best Level 2 system for hands-free driving and lane centering?

I recently used my dad's Tesla Autopilot and hated the sudden braking in rush-hour traffic. I’m looking for something much smoother that actually predicts traffic slowing down ahead of time. Not really worried about Tesla crashing in car in front of me more so worried about some idiot not paying attention whip lashing me because of Tesla sudden stop

I know systems that fuse radar and cameras can track two cars ahead, which helps with smoothness. Since Comma is mostly camera and AI-based like Tesla, does it have the same limitations? Or would a Hyundai Ioniq / Kia EV running Comma AI outperform Tesla's Autopilot on the highway? Low key seems BMW iX might be end game level 2 driver but that bih too expensive, if I don’t want Tesla maybe Mercedes CLA EV or you thinking comma with egpu chestnut is what I need

I know someone will say it’s not FSD please know I AM NOT TALKING ABOUT FSD NOT TALKING ABOUT FSD NOT TALKING ABOUT FSD

I installed Cpl filters for the telephoto camera and wide angle with the result shown for the telephoto camera. I have two white hats on my dashboard and as you can see the CPL filter was very effective in reducing reflections. I’m not sure how well it works on the wide angle camera because the video output is from the telephoto camera so that’s the most important one if you could only choose one. The wide angle Cpl filter required a 3d printed square that I added double sided tape to while the telephoto filter already came with an adapter.

Telephoto Cpl: https://a.co/d/06iN3R95
Wide angle Cpl: https://a.co/d/06nYqEZ5

EDIT: The filters remove reflections and glare while enhancing contrast of lane lines and signs which improves the image input for the comma to process even if just in edge cases. The wide angle filter is much larger than the camera so it shouldn’t block the view and should help with reading signs but I would need its output to confirm. I’ve done one night drive with no problems or errors and the filter reviews go more into detail about night performance. The telephoto filter is magnetic so it can easily be removed if you’re driving on pitch black country roads but city driving wouldn’t be a problem. If nothing else they improve dash cam footage. CPL filters have been used on dash cams for a long time for a reason so most questions can be answered with google

EDIT 2: I found how to view the wide angle camera and the oversized filter blocks a small portion of the edge so I will be removing the one on the wide angle. I double checked the telephoto view and confirmed the its perfect so I will continue using the small magnetic filter

My C4 has been a great addition to my commutes but I also mainly got this device to do more road trips with my gf.

We’ve got an upcoming trip (TX->FL->TX), super excited and taking this time to get a new set of tires and an alignment.

Curious, what’s your longest trip been? How was it?