Tesla Full Self-Driving’s biggest improvements from v13 to v14

Tesla Full Self-Driving (Supervised) v14 has been out for several weeks now, and there are a tremendous number of improvements, as we have now reached the fourth iteration of the semi-autonomous software.

Tesla began the v14.1.4 launch last night, which included minor improvements and addressed brake-stabbing issues many owners have reported. In my personal experience, the stabbing has been awful on v14.1.3, and is a major concern.

However, many things have improved, and only a couple of minor issues have been recurring. Many of the issues v13 addressed are no longer an issue, so Tesla has made significant progress.

Here are some of the most notable improvements Tesla made with v14 from v13:

Better Lane Switching on Highways

One of my biggest complaints with v13 was that the “Hurry” Speed Profile would often stay in the left lane, even when there were no passing cars. The legality of cruising in the left lane fluctuates by jurisdiction, but my personal preference is to drive in the right lane and pass on the left.

That said, Tesla has improved FSD’s performance with more courteous lane behavior. It no longer camps in the left lane and routinely gets back in the right lane after passing slower cars.

More Awareness for Merging Traffic and Makes Courteous Moves

There have been times when FSD has been more aware of merging traffic, and even cross traffic, than most human beings.

Here are a few examples –

• Full Self-Driving lets a car out of cross traffic during a busy time of day. This road tends to get very congested, especially during rush hour, so the car that was let in by FSD would have been sitting there for likely a minute longer if my Tesla had not let him in:

When you realize Tesla Full Self-Driving is more courteous than most human drivers… pic.twitter.com/PnKJcTpwKu

— TESLARATI (@Teslarati) October 26, 2025

• A busy, four-lane expressway with a quick exit on the far side of the highway for this merging vehicle. I’ve seen some drivers be extremely inattentive and travel at the same speed as merging cars, making their entry onto the expressway less seamless. FSD doesn’t do that; it makes way for merging cars:

pic.twitter.com/YehFpw3cwi

— Joey Klender (@KlenderJoey) October 26, 2025

More Confident Driving Around Mail Trucks…and Amish

I encounter a lot of Amish in my area of Pennsylvania, and they commonly use both shoulders and the road, so traffic can get congested at times.

In the past, I’ve taken over when encountering Amish buggies, mail trucks, or other vehicles that are moving slowly or making frequent stops. I have felt it is more logical to just take over in these situations.

I decided not to yesterday on a long drive through Lancaster, PA, and the FSD did a wonderful job of confidently overtaking these vehicles:

Let’s see how Tesla Full Self-Driving v14.1.3 handles Amish traffic

Used Dashcam for these; no GoPro in the car today pic.twitter.com/ZYxrBXD9nZ

— TESLARATI (@Teslarati) October 25, 2025

This was really impressive and fun to see. There was a slight stutter during one of the three instances, but overall, I didn’t have any concerns.

Object Avoidance

On v13, I almost let the car drive into a fallen branch in the middle of the road. A mile later, the car swerved out of the way for horse droppings. It was a beautiful, clear morning, and the fact that the car did not try to avoid the branch, but did steer away from poop, was concerning.

Tesla has obviously done a great job at refining FSD’s ability to navigate around these road hazards. Last night, it swerved around a dead animal carcass in the middle of the highway. I didn’t see it until we were already going around it:

Some more Tesla Dashcam footage that was very impressive – v14.1.3:

Swerved to avoid an animal carcass on the highway
Consideration move to allow a car to merge

Dashcam weirdly makes things look slower than they actually occurred. These both were enough for me to hit the… pic.twitter.com/CjmYLOBMQU

— TESLARATI (@Teslarati) October 26, 2025

It was awesome to see this and never feel alarmed by the sharp movement. The maneuver was smooth and really well done.

Better Speed Consistency

With v13, I felt I had to constantly adjust the Speed Profile, as well as the Max Speed setting, when using FSD. With V14, I don’t feel like I am making as many adjustments.

Tesla axed the Max Speed setting altogether with v14, which was a good move, in my opinion. Choosing the Speed Profile is now more intuitive by using the right scroll wheel. If the car is traveling too fast or too slow, just change the profile.

Three things Tesla needs to improve with Full Self-Driving v14 release

V13 had some issues with local roads, and I felt it would travel at strange speeds. In a 45 MPH zone, it would sometimes take a long time to reach 40 MPH, then hover between 43 MPH and 47 MPH. It would then fluctuate between those two speeds, frustrating drivers behind me, understandably.

V14 gets up to speed much better and travels at speeds I’m much more comfortable with on both local roads and highways.

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