Tesla refines Full Self-Driving, newest replace impresses the place it final got here up brief

Tesla launched Full Self-Driving v14.2.1.25 on Friday evening to Early Entry Program (EAP) members. It got here as a shock, because it was paired with the discharge of the Vacation Replace.

We had been in a position to exit and take a look at it fairly extensively on Saturday, and the adjustments Tesla comprised of the earlier model had been extremely spectacular, particularly contemplating it appeared to excel the place it final got here up brief.

Tesla dietary supplements Vacation Replace by sneaking in new Full Self-Driving model

With Tesla Full Self-Driving v14.2.1, there have been some critical regressions. Pace Profiles had been overtinkered withinflicting some modes to behave in a wierd method. Hurry Mode was essentially the most evident, because it refused to go greater than 10 MPH over the pace restrict on freeways.

It will routinely maintain up site visitors at this pace, and flipping it into Mad Max mode was kind of excessive. Hurry is what I take advantage of most steadily, and it had turn out to be considerably unusable with v14.2.1.

It appeared as if Pace Profiles needs to be extra related to each passing and lane-changing frequency. Capping speeds doesn’t assist as it will possibly impede the circulation of site visitors. When FSD travels on the pace of different site visitors, it’s far more efficient and fewer disruptive.

With v14.2.1.25, there have been three noticeable adjustments that improved its efficiency considerably: Pace Profile refinements, lane change confidence, and Pace Restrict recognition.

? Lots of you requested us to check freeway driving with Tesla Full Self-Driving v14.2.1.25. Right here’s what we observed:

? Pace Profiles are considerably improved. Hurry Mode is not capped at 10 MPH over the pace restrict, and now travels with the circulation of site visitors. That is a lot… pic.twitter.com/48ZCGbW0JO

— TESLARATI (@Teslarati) December 13, 2025

Pace Profile Refinement

Pace Profiles have been considerably improved. Hurry Mode is not capped at 10 MPH over the pace restrict and now travels with the circulation of site visitors. That is far more snug throughout freeway operation, and I used to be not required to intervene at any level.

With v14.2.1, I used to be typically helping it with lane adjustments, and felt it was within the unsuitable place on the unsuitable time extra steadily than ever earlier than.

Nevertheless, this was one of many best-performing FSD variations in latest reminiscence, and I actually didn’t have any complaints on the freeway. Pace, maneuvering, lane switching, routing, and aggressiveness had been all good.

Lane Modifications

v14.2.1 had a bent to be just a little extra timid when altering lanes, which was kind of irritating at occasions. When the automobile decides to alter lanes and activate its sign, it wants to tug the set off and alter lanes.

It additionally modified lanes at extraordinarily pointless occasions, which was an actual frustration.

There have been no points at this time on v14.2.1.25; lane adjustments had been tremendous assured, executed on the right time, and within the right vogue. It made good selections on when to get into the fitting lane when continuing towards its exit.

It was one of many first occasions shortly that I didn’t really feel as if I wanted to nudge it to alter lanes. I used to be very impressed.

Pace Restrict Recognition

So, it is a advanced subject. With v14.2.1there have been many occasions when it might see a Pace Restrict signal that was not meant for the automobile (one catered for tractor trailers, for instance) or perhaps a route signal, and it might incorrectly regulate the pace. It did this on the freeway a number of occasions, mistaking a Route 30 signal for a 30 MPH signal, then starting to decelerate from 55 MPH to 30 MPH on the freeway.

This required an intervention. I additionally had a difficulty leaving a drive-thru Christmas lights show, the place the homeowners of the personal property had a 15 MPH signal posted almost each 200 yards for a couple of mile and a half.

The automobile recognized it as a 55 MPH signal and sped up considerably. This triggered an intervention, and I needed to drive manually.

It looks like FSD v14.2.1.25 is now much less reliant on the signage (perhaps as a result of it was incorrectly labeling it) and extra reliant on map information or the conduct of close by site visitors.

A great instance was on the freeway at this time: regardless of the automobile studying that Route 30 signal and the Pace Restrict signal on the middle display screen studying 30 MPH, the automobile didn’t decelerate. It continued on the similar pace, however I’m unsure if that’s due to site visitors or map information:

? We listened to and browse loads of you who had a grievance of Tesla Full Self-Driving v14.2.1 incorrectly studying Pace Restrict indicators

This seems to be resolved in v14.2.1.25.

Right here’s a breakdown: pic.twitter.com/TEP03xrMbt

— TESLARATI (@Teslarati) December 13, 2025

A Lone Criticism

Tesla has mentioned future updates will embrace parking enhancements, and I’m actually anxious for them, as a result of parking is just not nice. I’ve had some actual points with it over the previous couple of months.

As we speak was no totally different:

? My lone grievance with my drive on Tesla FSD v14.2.1.25 was this unusual parking occasion.

FSD swung out large to the left to tug into this spot and that is the place it appeared to be stumped. I gave it about 10 seconds after the automobile simply stopped transferring for it to make some… https://t.co/ZEkhTHOihG pic.twitter.com/TRemXu5DLf

— TESLARATI (@Teslarati) December 13, 2025

Full Self-Driving v14.2.1.25 is mostly a large enchancment over previous variations, and it appears obvious that Tesla took its time with fixing the bugs, particularly with freeway operation on v14.2.1.