Grok in Tesla Vehicles: What’s Confirmed—and What “Grok 4.3” Doesn’t Prove

1. Model: Model S, Model 3, Model X, Model Y or Cybertruck.
2. Processor: AMD processor.
3. Vehicle software: version 2025.26 or later.

Tesla’s 2025.26 software-update post on X also listed “Grok (Beta)” with “US, AMD” and said existing voice commands remain unchanged. If a vehicle does not meet Tesla’s support-page requirements, the provided official support evidence does not establish Grok availability for that vehicle.

Why “Grok 4.3” is probably a version-number mix-up

The supplied sources include three different kinds of version references, and they should not be merged:

• Grok 4: xAI has an official Grok 4 page, including a section on native tool use. That source does not establish an in-car Tesla release called “Grok 4.3.”
• Tesla app update 4.3: A separate article about Tesla app update 4.3 describes mobile-app changes such as notifications, customizable quick actions, Cabin Overheat Protection controls and widget improvements. That is not the same as an in-car Grok model version.
• Tesla vehicle software 2025.26: Tesla’s Grok support page ties in-car availability to vehicle software version 2025.26 or later, along with the AMD processor requirement.

In other words, a Grok model version, a Tesla vehicle software version and a Tesla mobile-app version are separate things. The evidence supports Grok in eligible Teslas, but not the specific claim that “Grok 4.3” is running inside them.

What Grok can actually do in a Tesla

The most defensible description is that Grok functions as an in-car conversational AI feature. TeslaNorth described it as a conversational companion powered by xAI and said that, at the time described, it could not control vehicle functions.

That limitation is important. Tesla’s own 2025.26 post said existing voice commands remain unchanged. Separately, Tesla’s voice-command support page says certain high-data-usage vehicle features, including maps, navigation and voice commands, require at least Standard Connectivity. Those sources do not show Grok replacing Tesla’s existing voice-command system or gaining broad car-control powers.

What the evidence does not support

Based on the supplied sources, do not treat these capabilities as confirmed for in-car Grok:

• changing climate, charging or vehicle settings;
• setting or modifying navigation;
• controlling media;
• locking, unlocking or operating vehicle systems;
• activating driving features; or
• exposing the full “native tool use” described on xAI’s Grok 4 page inside Tesla vehicles.

Future Tesla or xAI release notes could change the picture. For now, the evidence supports a more limited claim: Grok is available in certain Teslas as a conversational in-car AI feature, with no confirmed vehicle-control capability in the provided sources.

Bottom line

If you are asking whether Grok works inside Tesla vehicles, the answer is yes for eligible vehicles: Model S, Model 3, Model X, Model Y and Cybertruck with an AMD processor and vehicle software 2025.26 or later.

If you are asking whether “Grok 4.3” specifically works inside Tesla vehicles, the answer is not proven by the supplied evidence. The record confirms Grok availability in eligible Teslas and separately documents xAI’s Grok 4, but it does not establish a Tesla in-car release called “Grok 4.3.”