NHTSA complaint #11717616

Owner complaint summary

COMPONENT: Battery and Charging System SUMMARY: 2023 Tesla Model 3 Long Range lost 15% battery capacity (345→300 miles) in 2 months at 9,816 miles. Comparison vehicle shows this is a defect, not normal wear. DESCRIPTION: Vehicle: 2023 Tesla Model 3 Long Range, VIN: [insert VIN], 9,816 miles Defect: Between September 2025 and November 2025, displayed range at 100% charge dropped from 345 miles to 300 miles—a 15% loss in just 2 months. Evidence This Is A Defect: I own a second 2023 Model 3 (base model) with 66,680 miles that only dropped from 272→260 miles (4.4% loss). The Long Range with 7x FEWER miles has 3x MORE degradation, indicating a battery pack defect. Service Refusal: Tesla Service ran “range analysis” but refuses to test battery capacity or check for dead cells. Only provided scripted responses about EPA vs real-world driving, which doesn’t explain why my high-mileage vehicle has healthier batteries. Safety Concern: Rapid cell degradation may indicate failing cells, thermal management defect, or fire risk. Unpredictable range loss creates stranding risk. Request: Investigate 2023 Model 3 LR battery packs for systemic defects. Require Tesla to perform cell-level diagnostics and replace defective packs. Documentation available upon request.