According to an internal communication sent to sales advisors across the United States, Puerto Rico, Canada, and Mexico, Tesla confirms that no customer vehicles currently contain HW4.5. The much-discussed “AP45” references were the result of a temporary labeling error, not a new hardware rollout.
Earlier this week, reports surfaced suggesting that Tesla had quietly begun shipping a new Hardware 4.5 (also referred to as AP4.5 or AI4.5) computer in newly delivered Model Y vehicles. The claims were based on references found in parts catalogs and delivery documentation, quickly sparking speculation about a stealth Full Self-Driving hardware upgrade.
Tesla has now stepped in to clear up the confusion — and the answer is definitive.
According to an internal communication sent to sales advisors across the United States, Puerto Rico, Canada, and Mexico, Tesla confirms that no customer vehicles currently contain HW4.5. The much-discussed “AP45” references were the result of a temporary labeling error, not a new hardware rollout.
What caused the HW4.5 rumor
Tesla explained that the confusion originated from inconsistencies in how certain internal systems and documents displayed option codes. In some cases, “AP45” appeared due to minor formatting differences between production teams, leading employees and customers alike to believe a new FSD computer had entered the supply chain.
This misunderstanding quickly snowballed. Sales teams reported being overwhelmed with questions about Full Self-Driving hardware differences, and Tesla acknowledged receiving direct feedback from customers who were unsure whether to place or proceed with orders. On social media, some buyers even stated they delayed or canceled purchases while waiting for clarity on HW4.5 availability.
Tesla’s official position on FSD hardware
Tesla was explicit in its clarification: all vehicles delivered today are equipped with HW4, which the company describes as its “latest and most advanced Full Self-Driving (Supervised) hardware.” There is no hidden upgrade, no performance boost, and no new computing platform being quietly introduced.
In practical terms, customers taking delivery now are receiving the same HW4 platform Tesla has been shipping broadly since 2023.
Steps Tesla is taking to prevent future confusion
To ensure this situation does not repeat, Tesla says it is actively updating internal systems, option code descriptions, and documentation to standardize terminology. Sales advisors have been instructed to rely on the corrected language when discussing FSD hardware, so customers receive consistent and accurate information across all regions.
What this means for buyers
For customers, the takeaway is simple and reassuring:
If you take delivery today, your Tesla comes with HW4 — no more, no less. There is no need to worry about missing out on a newer computer, and no reason to expect an unannounced hardware leap hidden in current production.
Despite the brief wave of speculation, Tesla’s FSD hardware roadmap remains unchanged for now. Any future upgrade beyond HW4 will be clearly communicated — not discovered through mislabeled codes.
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