Slickdeals is community-supported.  We may get paid by brands for deals, including promoted items.
Heads up, this deal has expired. Want to create a deal alert for this item?
expired Posted by scraejtp • Jul 1, 2025
  1. Deal Image
Item 1 of 2
  1. Deal Image
  2. Deal Image
Item 1 of 2
expired Posted by scraejtp • Jul 1, 2025

Comma 4th of July Sale: Vehicle/Car Harness $99, Comma 3X

+ Free Shipping

$799

$999

20% off
Comma.ai
112 Comments 38,396 Views
Visit Comma.ai
Good Deal
Save
Share
Deal Details
Comma.ai is offering their Comma 4th of July Sale on their Comma 3X on sale for $799. Select/purchase an eligible harness to connect the Comma 3X to your vehicle for $99. Shipping is free.

Thanks to Community Member Cscraejtp for finding this deal

Note: use the drop down menu to select your vehicle/car harness. Upgrade to UPS 2-Day Air is available for additional $25

Includes:
  • Comma 3X
  • 1.5' Right Angle OBD-C Cable
  • 2 Standard Mounts
Features:
  • Qualcomm Snapdragon 845
  • 2160x1080 OLED Display
  • 128GB Internal Storage
  • WiFi/LTE/High Precision GPS Connectivity
  • IR LED Interior Night Vision Monitoring
  • CAN FD Vehicles Enabled
  • 3x 1080p Camera w/ 140 dB of Dynamic Range; Dual-Cam 360 Vision & Narrow Cam
  • OBC-C Port (USB-C w/ CAN) + USB 3.1 Gen 2 Port
Warranty
  • Includes 1-year limited warranty against hardware defects with purchase.

Editor's Notes

Written by Corwin | Staff
  • About the Deal
    • This offer is part of their Comma 4th of July Sale and $200 less than this previous +100 Frontpage Deal in November 2024.
    • The comma 3X is custom hardware designed to live in your car, and purpose built to run openpilot. The comma 3X has three beautiful HDR cameras, two cameras to watch the road and one night-vision camera to see inside the car.
    • Besides cameras, the comma 3X has a suite of connectivity and sensors including cellular LTE, Wi-Fi, an IMU, high-precision GPS, and microphones.
    • Ensure you select car/vehicle harness from the drop down menu; works with over 300+ cars [Check Compatibility]
    • 30-day money back trial with purchase
    • Get 1%-5% cash back on deals like this with a cash back credit card. Compare the available cash back credit cards here.
    • Please see the original post for additional details and give the WIKI and forum comments a read for helpful discussion.

Original Post

Written by scraejtp
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Comma.ai is offering their Comma 4th of July Sale on their Comma 3X on sale for $799. Select/purchase an eligible harness to connect the Comma 3X to your vehicle for $99. Shipping is free.

Thanks to Community Member Cscraejtp for finding this deal

Note: use the drop down menu to select your vehicle/car harness. Upgrade to UPS 2-Day Air is available for additional $25

Includes:
  • Comma 3X
  • 1.5' Right Angle OBD-C Cable
  • 2 Standard Mounts
Features:
  • Qualcomm Snapdragon 845
  • 2160x1080 OLED Display
  • 128GB Internal Storage
  • WiFi/LTE/High Precision GPS Connectivity
  • IR LED Interior Night Vision Monitoring
  • CAN FD Vehicles Enabled
  • 3x 1080p Camera w/ 140 dB of Dynamic Range; Dual-Cam 360 Vision & Narrow Cam
  • OBC-C Port (USB-C w/ CAN) + USB 3.1 Gen 2 Port
Warranty
  • Includes 1-year limited warranty against hardware defects with purchase.

Editor's Notes

Written by Corwin | Staff
  • About the Deal
    • This offer is part of their Comma 4th of July Sale and $200 less than this previous +100 Frontpage Deal in November 2024.
    • The comma 3X is custom hardware designed to live in your car, and purpose built to run openpilot. The comma 3X has three beautiful HDR cameras, two cameras to watch the road and one night-vision camera to see inside the car.
    • Besides cameras, the comma 3X has a suite of connectivity and sensors including cellular LTE, Wi-Fi, an IMU, high-precision GPS, and microphones.
    • Ensure you select car/vehicle harness from the drop down menu; works with over 300+ cars [Check Compatibility]
    • 30-day money back trial with purchase
    • Get 1%-5% cash back on deals like this with a cash back credit card. Compare the available cash back credit cards here.
    • Please see the original post for additional details and give the WIKI and forum comments a read for helpful discussion.

Original Post

Written by scraejtp

Community Voting

Deal Score
+95
Good Deal
Visit Comma.ai

Leave a Comment

Unregistered (You)

Top Comments

Speedracer
221 Posts
32 Reputation
I've had this device for over 15 months and it's been a game-changer for my 120 mile RT commute to San Diego 3 days per week. I use it on a 2022 Corolla Hybrid which is one of the most compatible cars with Comma (full start/stop). I've also used it on the occasional trip up to Northern California and it's been a god-send. I occasionally use it on my wife's 2019 Pilot as well as I bought an extra harness and power supply. For a long-distance commute, it really does take the edge off of driving. I find myself arriving at home and at work so much more relaxed. The benefit of my commute is it's mostly 50 miles of open driving on the I-5. I sit in the 3rd lane at 70mph and just let it do it's thing. A bit of traffic in the Carlsbad area is easily handled and cannot recommend this device enough.
CleverCrayon981
88 Posts
14 Reputation
Ya this isn't a product you wait for... Every freeway mile without it could be sooo much better. I bought at $3k and not one part of me wishes I waited.
Evan55
5877 Posts
1016 Reputation
yeah, not many people out there driving cars

111 Comments

Sign up for a Slickdeals account to remove this ad.

Jul 2, 2025
219 Posts
Joined Nov 2018
Jul 2, 2025
SpecialFX99
Jul 2, 2025
219 Posts

Our community has rated this post as helpful. If you agree, why not thank SpecialFX99

Am I missing something about you this? I looked up my car, found it was on the list but it says it adds lane assist and adaptive cruise control, but it only works on cars that came from from the factory with lane assist an adaptive cruise control. So what do you gain from this? I feel like I'm missing part of the story
1
Pro
Jul 2, 2025
92 Posts
Joined Dec 2014
Jul 2, 2025
awong9970
Pro
Jul 2, 2025
92 Posts
I bought this at $999 a few months ago and it has made 5+ hour road trips significantly less fatiguing. I'm a lot more willing to drive instead of fly knowing that I can rely on the comma to handle most of the work.
Jul 2, 2025
88 Posts
Joined Jul 2020
Jul 2, 2025
CleverCrayon981
Jul 2, 2025
88 Posts
Quote from Aogen :
It's going to keep dropping in price, the market is super niche.
Ya this isn't a product you wait for... Every freeway mile without it could be sooo much better. I bought at $3k and not one part of me wishes I waited.
Pro
Jul 2, 2025
14,227 Posts
Joined Dec 2015
Jul 2, 2025
Spaceman6969
Pro
Jul 2, 2025
14,227 Posts
Quote from xdz :
No BMW sigh

No Toyota Frown
2
Jul 2, 2025
73 Posts
Joined Aug 2018
Jul 2, 2025
WAIR
Jul 2, 2025
73 Posts
Quote from erol :
Hello Neighbour, how did you install it in your car. was it DIY? Does installing this voids car warranty? i have a honda accord 2020 and it has full honda warranty till 2028. i am thinking if getting this
Very easy to install (there is a youtube video showing how simple it is). It's completely removeable, so I unhook it before taking my car in for service. I bought it 3 years ago for $2,000, and I would still purchase it again at that price. I've used it for over 30k miles. The best example is a trip from Los Angeles to San Jose (about a 5-6 hours drive), and I touched the steering wheel for probably a cumulative 15 minutes while on the freeway.
Jul 2, 2025
14 Posts
Joined Aug 2021
Jul 2, 2025
yammi
Jul 2, 2025
14 Posts

Our community has rated this post as helpful. If you agree, why not thank yammi

Quote from Spaceman6969 :
No Toyota Frown
https://comma.ai/vehicles#toyota
1
Jul 2, 2025
652 Posts
Joined May 2014
Jul 2, 2025
6700i6700
Jul 2, 2025
652 Posts
kinda makes me want to get a lightning and pick up one https://www.youtube.com/watch?v=zaPvIu_US9I

Sign up for a Slickdeals account to remove this ad.

Jul 2, 2025
73 Posts
Joined Aug 2018
Jul 2, 2025
WAIR
Jul 2, 2025
73 Posts
Quote from Indyemmett :
I've been using Comma for over four years on my then new Prius. Toyota, during free service work, never asked questions. This is excellent for long trips. Before Comma I'd feel tired and restless after a long drive. Now I take day long trips and feel fine. This is not for urban driving, but is perfect for mindless open roads. I even engage when doing short drives. I absolutely would buy again without a second thought.
Until someone actually uses it on a long drive, they will not understand just how much Comma does "make driving chill".
Jul 2, 2025
3 Posts
Joined Dec 2024
Jul 2, 2025
BeigeScene385
Jul 2, 2025
3 Posts
I don't think I've ever seen a thread so astroturfed
6
Jul 2, 2025
4,618 Posts
Joined Mar 2013
Jul 2, 2025
SKV4m
Jul 2, 2025
4,618 Posts
Had this installed in my 2017 Subaru forester. Worked like a charm on Sunnypilot. It had some issues with shimmying between the lane. Needs more development https://imgur.com/a/8IVdXTS

I drive a Tesla model y juniper now. FSD is on another level but won't be subscribing after the trial period. I wouldn't mind installing a comma once it becomes supported. Autopilot isn't very good from what I've tried, i'll have more time to play with it after my FSD expires.
Last edited by SKV4m July 1, 2025 at 06:29 PM.
1
Jul 2, 2025
73 Posts
Joined Aug 2018
Jul 2, 2025
WAIR
Jul 2, 2025
73 Posts
Quote from SpecialFX99 :
Am I missing something about you this? I looked up my car, found it was on the list but it says it adds lane assist and adaptive cruise control, but it only works on cars that came from from the factory with lane assist an adaptive cruise control. So what do you gain from this? I feel like I'm missing part of the story
You don't get the warning to put your hands on the wheel. But you must remain vigilant, as it's not actually autonomous driving. Still, it greatly reduces the stress of driving. You won't understand until you actually try it. If you have a long road trip planned, buy it and try it for the 30 days trial period. You will keep it.
1
Jul 2, 2025
465 Posts
Joined May 2013
Jul 2, 2025
HoosierBunny
Jul 2, 2025
465 Posts
I've been using Comma 3x almost a year in my 23 Chevy Bolt, and it's the best thing ever, especially for highway trips.
Jul 2, 2025
22 Posts
Joined Feb 2022
Jul 2, 2025
SmartAlpaca4442
Jul 2, 2025
22 Posts
Quote from Evan55 :
yeah, not many people out there driving cars

Driving is so 2024. This will get obsolete as soon as jetpacks hit the market.
Jul 2, 2025
4,618 Posts
Joined Mar 2013
Jul 2, 2025
SKV4m
Jul 2, 2025
4,618 Posts
Quote from SpecialFX99 :
Am I missing something about you this? I looked up my car, found it was on the list but it says it adds lane assist and adaptive cruise control, but it only works on cars that came from from the factory with lane assist an adaptive cruise control. So what do you gain from this? I feel like I'm missing part of the story
Keeps the car centered by maxing the steering torque. No more hands-on-the-wheel nag. My 2017 Subaru Forester came with poor LKA that had a hard time recognizing lane lines and would make the car ricochet between lane lines. With the comma it will be locked in the center of the lane and better at predicting the forward path. It's an affordable way to upgrade your LKA. Take it with you after selling the car. No subscription.
1

Sign up for a Slickdeals account to remove this ad.

Jul 2, 2025
1,358 Posts
Joined Apr 2008
Jul 2, 2025
bigjonnee
Jul 2, 2025
1,358 Posts
Quote from SpecialFX99 :
Am I missing something about you this? I looked up my car, found it was on the list but it says it adds lane assist and adaptive cruise control, but it only works on cars that came from from the factory with lane assist an adaptive cruise control. So what do you gain from this? I feel like I'm missing part of the story
I'm not sure but your car has to have the built in motor for driving the steering wheel and accelerator. I'm sure some cars have these parts but still charge extra for lane assist and cruise control.

Leave a Comment

Unregistered (You)

Related Searches

AutosAutomotive ToolsAuto Electronic AccessoriesTech & Electronics

Popular Deals

View All
Found by
Just Now
$140$16515% off2TB WD_BLACK SN850X M.2 2280 PCIe Gen 4 NVMe Solid State Drive SSD $139.99 + Free Shipping
3
Found by
Just Now
$88$15543% offHOKA Women's Speedgoat 6 Trail Running Shoes (Black/Aloe) $87.97 + Free Shipping
3
Found by
Just Now
$11$2045% off5-Piece Franklin Sports Thrown Down Baseball Bases with Home Plate and Pitcher's Rubber (Orange) $10.50 + Free Shipping w/ Prime or on $35+
3
Found by
Just Now
$2.57$7.5966% off[S&S] $2.57*: 25-Count Neutrogena Ultra Soft Hypoallergenic Fragrance-Free Makeup Remover Wipes at Amazon
0
Found by
Just Now
$6.18$9.3633% off16.9-Oz Betterbody Foods Avocado Oil $6.18 w/ S&S + Free Shipping w/ Prime or on $35+
1

Trending Deals

View All
Found by
Just Now
$154$49969% offACEMAGIC S3A Mini PC Barebone: Ryzen 7 5700U, 2x DDR4, 2x M.2 2280, Wi-Fi 6 + BT, 3x 4K Out @ $154 + F/S
10
Found by
Just Now
$1,000$2,00050% offSpectrum Internet Customers: Pre Order Samsung Galaxy Z Fold 7 + Mobile Plan Get Up to $1000 Back w/ Trade-in of eligible device
149
Found by
Just Now
$120$30060% offKlymit 6-Person Cross Canyon Free Standing Camping Tent w/ Exterior Storage $119.99 + Free Shipping w/ Prime
2
Found by
Just Now
$450$1,60071% offGARVEE Energy Star Certified 12000 BTU 21 SEER 2 230V Mini Split AC/Heating System w/ Wi-Fi $449
15
Found by
Just Now
$13$1827% off6-Pack 18-Oz Suave Moisturizing Body Wash (Various Scents) $13.37 ($2.23 Ea) w/ S&S + Free Shipping w/ Prime or on $35+ $13.45
1