Tesla quietly updates Cybertruck underbody panels with composite material

Tesla has replaced the Cybertruck's aluminum underbody panels with a new composite material, confirmed by lead engineer Wes Morrill. This material, likely carbon fiber, is lighter, more durable, and cheaper than aluminum. It also allows better shaping around bolts, improving the vehicle's aerodynamics and providing a slight efficiency gain. Updated panels have been spotted on units built since April 2026. This change exemplifies Tesla's ongoing strategy of implementing technical improvements during production without waiting for a new model year.

• Aluminum underbody panels replaced by composite material since April 2026
• New material reduces weight, cost, and improves aerodynamics per Wes Morrill

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