Tesla Charging Speed by Firmware Version

Does a Tesla firmware update affect your charging speed? This page compares real-world maximum DC charging curves across different firmware versions, collected from TeslaLogger users worldwide. See exactly how each software update impacts the peak charging power (kW) your Tesla Model 3, Model Y, Model S, or Model X can achieve at every state of charge (SoC) level.

Tesla frequently adjusts charging behavior through over-the-air software updates. Some firmware versions unlock higher peak charging rates, while others may throttle power for battery longevity. By visualizing charging curves per firmware version side by side, you can identify which updates improved — or reduced — your vehicle's fast charging performance.

How to use this tool:

• Select your Tesla model and preferred charging network (Supercharger V2, V3, Ionity, Fastned, etc.).
• Adjust the "Min chargings" filter to only include firmware versions with enough data points for reliable results.
• Compare the charging curves to see which firmware delivers the best peak power at your typical SoC range.

To contribute your own data and track your charging performance over time, install TeslaLogger — the open-source data logger for Tesla vehicles.

Choose Model & Charger