Tesla launched Full Self-Driving v14.2.1.25 on Friday night time to Early Entry Program (EAP) members. It got here as a shock, because it was paired with the discharge of the Vacation Replace.
We have been capable of exit and take a look at it fairly extensively on Saturday, and the adjustments Tesla produced from the earlier model have been extremely spectacular, particularly contemplating it appeared to excel the place it final got here up quick.
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. Velocity Profiles have been overtinkered withinflicting some modes to behave in an odd method. Hurry Mode was probably the most evident, because it refused to go greater than 10 MPH over the velocity restrict on freeways.
It might routinely maintain up site visitors at this velocity, and flipping it into Mad Max mode was type of excessive. Hurry is what I exploit most steadily, and it had grow to be considerably unusable with v14.2.1.
It appeared as if Velocity Profiles needs to be extra related to each passing and lane-changing frequency. Capping speeds doesn’t assist as it might impede the stream of site visitors. When FSD travels on the velocity 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: Velocity Profile refinements, lane change confidence, and Velocity 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:
? Velocity Profiles are considerably improved. Hurry Mode is not capped at 10 MPH over the velocity restrict, and now travels with the stream of site visitors. That is a lot… pic.twitter.com/48ZCGbW0JO
— TESLARATI (@Teslarati) December 13, 2025
Velocity Profile Refinement
Velocity Profiles have been considerably improved. Hurry Mode is not capped at 10 MPH over the velocity restrict and now travels with the stream of site visitors. That is far more comfy throughout freeway operation, and I used to be not required to intervene at any level.
With v14.2.1, I used to be typically aiding it with lane adjustments, and felt it was within the improper place on the improper time extra steadily than ever earlier than.
Nonetheless, this was one of many best-performing FSD variations in latest reminiscence, and I actually didn’t have any complaints on the freeway. Velocity, maneuvering, lane switching, routing, and aggressiveness have been all excellent.
Lane Adjustments
v14.2.1 had an inclination to be slightly extra timid when altering lanes, which was type of irritating at occasions. When the automotive decides to vary lanes and activate its sign, it wants to drag the set off and alter lanes.
It additionally modified lanes at extraordinarily pointless occasions, which was an actual frustration.
There have been no points right now on v14.2.1.25; lane adjustments have been tremendous assured, executed on the appropriate time, and within the appropriate style. 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 vary lanes. I used to be very impressed.
Velocity Restrict Recognition
So, it is a advanced concern. With v14.2.1there have been many occasions when it will see a Velocity Restrict signal that was not meant for the automotive (one catered for tractor trailers, for instance) or perhaps a route signal, and it will incorrectly modify the velocity. 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 practically each 200 yards for a few mile and a half.
The automotive recognized it as a 55 MPH signal and sped up considerably. This prompted an intervention, and I needed to drive manually.
It looks like FSD v14.2.1.25 is now much less reliant on the signage (possibly 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 right now: regardless of the automotive studying that Route 30 signal and the Velocity Restrict signal on the middle display screen studying 30 MPH, the automotive didn’t decelerate. It continued on the similar velocity, however I’m undecided if that’s due to site visitors or map information:
? We listened to and skim quite a lot of you who had a criticism of Tesla Full Self-Driving v14.2.1 incorrectly studying Velocity 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 isn’t nice. I’ve had some actual points with it over the previous couple of months.
At the moment was no totally different:
? My lone criticism with my drive on Tesla FSD v14.2.1.25 was this unusual parking occasion.
FSD swung out extensive to the left to drag into this spot and that is the place it gave the impression to be stumped. I gave it about 10 seconds after the automotive 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 known as 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.
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