The comma shop is the only official retailer of comma devices (the comma two, comma three, and comma 3X). The comma shop accepts all major credit cards. We offer free shipping in the US and $30 flat rate international shipping.

Buy the comma 3X here.

No. comma prime is completely optional and is not needed for any core functionality. comma prime can be activated, cancelled, and re-activated at any time.

Congratulations! Get started by watching the Installation Guide on our setup page. We find on average the installation process takes 15-30 minutes.

If you encounter an issue, we recommend you join our Discord where hundreds of active users are available to help troubleshoot.

You can cancel your order for a full refund up until it ships through your order page.

Installing a comma device does not require any permanent modifications to your car. With the car harness, most car trims remain in place.

We recommend the mount be centered on the windshield below the trim (see pictures in the Installation Guide). Be sure to leave enough room to remove the trim in the future. First, clean the windshield with the included alcohol wipe. Ensure the top of the mount is fully visible from the driver’s seat. Adhere mount: peel off the 3M tape’s cover on the mount. Press firmly in the center of the mount, then the edges to ensure no bubbles form.

Let the mount cure: the mount must cure for 48 hours before installing the comma device. Skipping this step will compromise the integrity of the mount.

The 3X mount may be difficult to slide onto the device before it’s installed on the windshield. This is expected and will be easier to do once the mount is installed and fully cured. Some force may be necessary to initially slide the device on the mount. Before applying any force, ensure the device mount is parallel to the mount on the windshield so it will slide in correctly.

IT IS THE USER’S RESPONSIBILITY TO MOUNT THE DEVICE IN COMPLIANCE WITH ALL APPLICABLE LAWS AND ORDINANCES.

From the FTC website: "Simply using an aftermarket or recycled part does not void your warranty. The Magnuson-Moss Warranty Act makes it illegal for companies to void your warranty or deny coverage under the warranty simply because you used an aftermarket or recycled part."

https://www.consumer.ftc.gov/articles/0138-auto-warranties-routine-maintenance

Contact your insurance provider directly; insurance coverage is between the user and their insurance provider. comma hardware users have been able to get coverage and discuss this on Reddit here.

Insurance companies are beginning to understand the safety benefits of ADAS and LKAS systems like openpilot and we have not heard of any providers rejecting coverage to comma hardware users.

No, existing comma harnesses work with these devices.

Every vehicle is a little different and the experience can be hard to describe which is why we offer this trial. If you don’t love the comma 3X, you can return it for a refund–no questions asked. All refunds must be initiated through comma.ai/returns within 30 calendar days of receiving your order.

The 30-day money-back trial starts the day your comma 3X is delivered (signature confirmation required for delivery). If you do decide to return your device, we ask that you get the return device in the mail within 30 days of receiving it.

To return your device, please request a return at: comma.ai/returns. A prepaid return label (or return instructions if not in the US) will be automatically sent to you. $9.99 will be deducted from your refund if you choose to use this label.

Yes. We ask that you get your return device in the mail within 30 days of receiving it.

The buyer is responsible for international shipping costs to return a device. Please use tracking and insurance as we are not responsible for lost or stolen packages. Return information is provided by email after initiating a return at comma.ai/returns.