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InsideEVs
InsideEVs
Technology
Rob Stumpf

One Owner Just Did What Tesla Couldn't: Upgrade An Older Car To HW4

  • A Tesla owner beat the automaker to the punch by retrofitting newer FSD hardware into his older Model 3.
  • The HW3-equipped car received new cameras and Tesla's newer HW4 computer.
  • It took very few parts to actually complete, according to the successful modder.

Tesla backed itself into a corner with the hardware baked into its cars. Millions of Teslas sold between 2019 and 2023 were sold with computers that Tesla sold as "capable" of Full Self-Driving. Yet the company later admitted that this simply isn't the case. It claimed that retrofitting those cars with newer hardware would take a series of micro factories.

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