Even after more than 265 BILLION real-world operational miles, Tesla has found no evidence of even ONE spontaneous battery failure leading to a vehicle fire in a Model 3, Model Y, Cybertruck or Semi Tesla just published a deep dive into the engineering behind its vehicle batteries for safety, durability and longevity And the amount of engineering is insane: • Thermal barriers between cells • Liquid cooling and heating • Cell, module and full-vehicle failure testing • 100% inspection of every cell • X-ray scanning of every cell • CT scanning on a significant fraction of cells • Thousands of battery cycling tests across different temperatures, charge rates and conditions This is what vertical integration looks like at Tesla Chemistry → cell → battery pack → thermal management → software → real-world fleet data → back into engineering And the closed loop is the important part Millions of Teslas continuously generate battery-health data that feeds back into manufacturing, diagnostics and future battery designs 265+ billion miles without a known spontaneous battery failure causing a vehicle fire across these vehicles is an insane engineering record