Speed limit and FSD?

[TexasRaider]

I love my CT buuuuuuuut....

Where do I start? It's beginning to feel personal- FSD on the CT hates me. Software 2025.8.7 FSD software 13.2.8

My hands are on the wheel- my eyes on the road, head and hands perfectly still, the camera lenses just out of the car wash.... beep, beep beep. Over and over and over again. I'm short, am I sitting too close to the yoke? Is the sun visor in the way? Does it just hate me? Does it think I'm on the phone when I'm yelling at FSD "What the F*** is WRONG with you???"

Taking a sharp mountain curve- straddling the center line into oncoming traffic.

Turning from a stoplight into a merge lane- tries to go immediately into the "slow" lane of traffic and skip the merge lane all together.

Completely unable to read the 65 mph sign in one spot - over and over and over again.

Speed limit inside City Limits is 15mph- but not according to FSD which opts for 25mph. Oh Joy.

Imaging a deer in the road as a person- that I can deal with- a big 4 legged person- what will it do when it sees an elk I wonder?

The FSD on the model S much better- so much better.

Unfortunately, I expect all of these.
And, I second that of my 17MS. Also, 100% better. I’m much more confident with my MS on family trips than our CT. I’m confident that will change in the next 2 years.

PSA: For the first 7 years, I only used FSD a dozen times of owning my MS because it didn’t have the performance I want for the safety of my friends and family. But now, I use FSD on all the road trips in the 17MS. Very limited segments on trips with the 24CT.

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[DMenace66]

I'm struggling to get the truck to even do the speed limit. I have tried both the manual offset and the auto FSD. On my plaid FSD is great at going the "appropriate" speed. On the truck I feel like I have to stay on the accelerate a lot of the time.

I’m not having any trouble at all… If the vehicle is moving too slowly, I make sure I am not in ”CHILL” mode; and, if I have to, I shift FSD to “HURRY“ mode.

 

[The Duke]

I’m not having any trouble at all… If the vehicle is moving too slowly, I make sure I am not in ”CHILL” mode; and, if I have to, I shift FSD to “HURRY“ mode.

In "HURRY" mode my CT still holds up traffic when in the carpool lane. The normal speed in many parts of 680/280/101 is 80 - 85 mph. I set FSD while going that speed and it always slows down to 74 over time causing the unsafe situation of people passing me on the right - even when they have to cross a double solid white line.

The vehicle should treat the set speed as an upper limit and if there is no one in front of you and safe to do so, accelerate to that speed fairly quickly. That is normal driving.

 

[georgek43]

Every once in a while my CT won’t speed up to the limit but it seems if I give it some pedal it then stays there. I often drives with FSD with my foot on the pedal though. Who drives the speed limit ?

I too find I’m driving my CT much more with my foot on the accelerator than I did a couple months ago. No matter the speed profile, it tends to drift down in speed when I want it to maintain speed, or creep up when I need to go slow.

Although I like to ‘go with the flow’ in terms of speed, I usually find FSD14 to be either too fast or too slow. Most interstate traffic near me goes 77-78 in the 70 zone. I could easily do this with the speed scroll wheel. Now it either wants to go 75 and annoy other drivers, or 80 or 82+ and risks me getting a ticket.

and sometimes there just is no flow to go with. That’s when the speed goes all over the place- too fast, too slow, all for no apparent reason - even though the fanboys trumpet that the AI is reacting to road conditions that I can’t perceive... Right.

Unfortunately for those of us who would like to go fast, there are many scenarios where it’s wise to drive the speed limit. Go 80+ on many interstates and you’ll see blue lights on the screen. Go 20 in a 15mph school zone and you risk not just a ticket but hurting a kid who’s likely not paying attention to traffic. In my golf cart community it’s 25mph most streets (some are 15, some are 10), and if you go 28 you’re getting pulled over. Sometimes it’s just wise to go slow, but not too slow, and I can judge that far better than FSD14.

Tesla told me- ‘just don’t use FSD if you don’t like it, because fully autonomous driving is the way things are going’. Great way to treat a paying customer; great return on my $8k investment in FSD. And I really did like and use FSD ALL THE TIME when I could directly and simply control the speed.

But in my ownership, FSD14 is not an improvement because of the removal of driver speed management on the scroll wheel. Without that scroll wheel speed control I find FSD is not even as useful as GM’s Supercruise that I had on my Lyriq.

For me, the new smarter ‘more autonomous‘ FSD14 takes far far more driver input than FSD13, so instead of ‘set and forget’ my speed, I now fiddle with the scroll wheel non stop, keep my foot on the accelerator most all of the time, and disengage dozens of times on every single trip. It might steer better and recognize more stuff, but that’s wasted because speed management is so lousy.

all to prematurely force a paradigm shift to fully autonomous driving. Fully autonomous E2E driving is a nice fantasy, and can even be achieved in some scenarios albeit with errors that I personally will not tolerate, but at this stage of development I don’t really want it. I can pull out of my driveway myself, prefer to choose my own space at the grocery store, and can park far better, safer and faster than auto park. And I can certainly determine the appropriate speed to drive far better than the AI.

FSD14 is a big fail for me. Just bring the scroll wheel back for speed management and I’ll work with the rest.

 

[The Duke]

FSD14 is a big fail for me. Just bring the scroll wheel back for speed management and I’ll work with the rest.

Maybe realize that FSD is not ultimately a driver assist? You hired an AI chauffeur, it will drive as it sees fit with some input from you. If you want more control, fire the AI and go back to AP.

 

[Musicurry]

It seems we all relate to the recent effective “downgrade” on FSD’s speed limit awareness. Simmer down, deal with it, and keep faith that Tesla will continue to what they do best - improve and surprise!

 

[TexasRaider]

Unfortunately, I expect all of these.
And, I second that of my 17MS. Also, 100% better. I’m much more confident with my MS on family trips than our CT. I’m confident that will change in the next 2 years.

PSA: For the first 7 years, I only used FSD a dozen times of owning my MS because it didn’t have the performance I want for the safety of my friends and family. But now, I use FSD on all the road trips in the 17MS. Very limited segments on trips with the 24CT.

Jan 2026 Update: With the recent updates since Thanksgiving, my family and I now use our 24CT for trips instead of the 17MS.

 

[georgek43]

Maybe realize that FSD is not ultimately a driver assist? You hired an AI chauffeur, it will drive as it sees fit with some input from you. If you want more control, fire the AI and go back to AP.

I really wish that were true, and maybe someday it will be. I’d love to just pop in the car and have it drive me safely at legal speeds and not annoy other drivers and take full liability for its actions. But here’s the actual official classification as of today:

“Tesla’s Full Self-Driving (FSD) version 14 (including updates like v14.2, v14.2.2, etc.) is an advanced driver-assist system, not fully autonomous driving.

Tesla officially calls it Full Self-Driving (Supervised), and Tesla’s support pages and documentation explicitly state that currently enabled features require active driver supervision and do not make the vehicle autonomous. The driver must remain attentive, keep hands on the wheel (or be ready to intervene), and is legally responsible for the vehicle’s operation at all times.

In terms of the SAE International levels of driving automation (the standard industry classification):

• FSD v14 is classified as SAE Level 2 (partial automation / advanced driver assistance system or ADAS).

• At Level 2, the system can handle steering, acceleration, and braking simultaneously under certain conditions, but the human driver must monitor the environment and be ready to take full control at any moment.

• It is not Level 3 (conditional automation, where the vehicle can handle all aspects in specific conditions without driver attention), Level 4 (high automation), or Level 5 (full automation).

Tesla has not yet deployed any unsupervised or fully autonomous version of FSD on public roads for consumer vehicles as of January 2026. The name “Full Self-Driving” is a marketing term that refers to future intended capabilities (once regulatory approval and safety thresholds are met), but the current implementation remains supervised driver assistance.

In summary: It’s a highly capable driver-assist system (Level 2), not autonomous driving. Always treat it as requiring your full attention when using it.”

until the day comes when it really is a chauffeur and drives autonomously, it’s just a driver assist system. Until it can actually manage speed much better than it does, I need to be able to so. The scroll wheel speed limit control made that easy; speed profiles make it difficult and imprecise, often annoying, frequently illegal and sometimes dangerous. I paid $8k for a driver assist program that worked great for me for a year. It’s now much less usable for me, but I can’t just fire it. I want FSD, just not the speed profile system. Some people are happy with the speed profiles. I’m not.

 

[Zcdz]

Slow to get up to the speed limit
Dangerous and unpredictable unnecessary automatic lane changes (pulling out of the slow lane in front of cars trying to pass me in the fast lane- a lot)
lane changes when I initiate the change manually with the turn button are delayed - enough to endanger the traffic behind me

 

[The Duke]

I really wish that were true, and maybe someday it will be. I’d love to just pop in the car and have it drive me safely at legal speeds and not annoy other drivers and take full liability for its actions. But here’s the actual official classification as of today:

“Tesla’s Full Self-Driving (FSD) version 14 (including updates like v14.2, v14.2.2, etc.) is an advanced driver-assist system, not fully autonomous driving.

You keep agreeing with me but do not know it. FSD is still in beta. FSD is driving how it wants to and you want it to be different. Take an Uber and see if it is driven exactly how you want.

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