Driver was making a left hand turn and as the turn was initiated the driver had no control of the vehicle. The vehicle system took over driving, causing substantial damage to the vehicle. Weeks leading up to the incident, the display and certain systems were not responding or provided errors. Following a reset each time, the vehicle would be operational.

PROPULSION FAILURE AT HIGHWAY SPEED — KNOWN DEFECT — NHTSA MFR COMMS XXX & XXX VEHICLE: 2026 Rivian R1S Dual Standard, VIN [XXX], LFP battery. Delivered XXX. 702 miles at incident. INCIDENT XXX: Complete unwarned propulsion failure on [XXX] at highway speed. Dashboard showed 8% SOC immediately before failure — no warning, no alert. Vehicle lost all propulsion 5 miles from nearest charger. Stranded 7 hours. $225 out-of-pocket towing/transport costs. DEFECT: Rivian Hudson NH service (WO-000002294461, INV_20260608-150458) confirmed 13% HV battery cell capacity imbalance via diagnostics — dashboard SOC reading does not reflect actual cell capacity. Factory pre-delivery calibration defect. Firmware update performed; HV battery hardware NOT replaced. Defect unresolved. RIVIAN'S PRIOR NHTSA FILINGS: Before my May 2026 delivery, Rivian filed mandatory EWR communications acknowledging this exact defect: - Mfr Comm 11026123: SMS warning owners range "will drop fast below 20% SOC" and to "stay above 20% SOC until issue resolved." - Mfr Comm XXX (112425_SOCImbalance_Email, Nov 24 2025): Email describing progressive range inaccuracy below 20% SOC. Component: FUEL/PROPULSION SYSTEM. Both appear on NHTSA 2026 R1S vehicle page. NON-DISCLOSURE: Neither communication was disclosed at sale (May 18) or delivery (May 22, 2026). Rivian sold this vehicle with a known active propulsion defect without informing me. Calibration-complete confirmation was never sent to this VIN. REQUEST: I ask ODI to assess whether this constitutes a safety defect requiring recall under 49 USC 30118, and whether Rivian's continued sale of LFP vehicles after these filings without disclosing the 20% SOC limitation warrants investigation. BBB Auto Line Case XXX active. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

SUPPLEMENTAL COMPLAINT — This filing supplements VOQ No. XXX filed XXX for the same vehicle and incident. The original complaint contained factual inaccuracies that this filing corrects. PROPULSION FAILURE AT HIGHWAY SPEED — KNOWN DEFECT — NHTSA MFR COMMS 11026123 & 11026124 VEHICLE: 2026 Rivian R1S Dual Standard, VIN [XXX], LFP battery. Delivered XXX. ~700 miles at incident. INCIDENT XXX: Navigation showed 8% SOC buffer on arrival at destination 5 miles away — active system assurance of sufficient range. Simultaneous audible alarm and dashboard warning then fired with approximately 15-20 seconds to act at ~60 mph on busy [XXX]. Emergency pull-over executed under extreme time pressure. Complete propulsion loss on highway shoulder. ~80°F. Rivian Roadside quoted 3-hour response; independently hired private tow. Approximately 45 minutes after stall, 12V battery died and hazard lights failed — disabled vehicle on live busy interstate shoulder with no hazard lights in 80° heat. Zero residual power. Towed to West Gardiner Service Plaza. 4 hours on highway shoulder, 3 hours at rest area. $225 out-of-pocket (tow + Lyft). DEFECT: Rivian Hudson NH service (WO-XXX, INV_XXX) confirmed 13% HV battery cell capacity imbalance — dashboard SOC does not reflect actual cell capacity. Factory calibration defect. Firmware update only; HV hardware NOT replaced. Defect unresolved. PRIOR NHTSA FILINGS: Before my May 2026 delivery Rivian filed mandatory EWR communications: - Mfr Comm XXX: warned owners of fast range drop below 20% SOC, instructed to stay above 20%. - Mfr Comm XXX (Nov 24 2025): described progressive inaccuracy below 20% SOC. Component: FUEL/PROPULSION SYSTEM. Both on NHTSA 2026 R1S vehicle page. NON-DISCLOSURE: Neither filing disclosed at sale/delivery May 22 2026. Calibration-complete confirmation never sent to this VIN. BBB Auto Line Case XXX active. VOQ XXX filed. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

When backing into a parking spot on two separate occasions the drivers door popped open while the vehicle was in motion and the doors were locked after my knee brushed against the button to open the door while the car was in motion.

Summary of the problem: The rear liftgate on my Rivian failed to detect an obstruction while closing and continued to close despite contact with a person. What happened: While the rear liftgate was automatically closing, I was unaware it was coming down and walked into it. The liftgate made contact with my upper body/face and did not stop or reverse as expected. Instead, it continued closing and forced me to the ground. Safety issue: The liftgate’s safety sensor failed to detect a human obstruction, creating a serious risk of injury. This is especially dangerous for children or shorter individuals who may be struck in the head or face. Injuries: I sustained bruising to my face and was knocked to the ground as a result of the liftgate continuing to close after impact. Why this is dangerous: A properly functioning power liftgate should stop and reverse when it encounters resistance. This system failed entirely, posing a significant safety hazard. There were no warnings or components that alerted before or after it failed to sense.