Investigations
Rear Toe Link May Separate
NHTSA Preliminary Evaluation PE26004 - open, opened 2026-05-26 and involving the RIVIAN R1S.
Among 2,329 NHTSA Preliminary Evaluation files in PlainCars' ODI extract, this record (PE26004) is one published case in that type class , and one of 2 investigation files attributed to RIVIAN.
NHTSA investigation PE26004 is a Preliminary Evaluation opened on 2026-05-26 and currently open. The subject of record is RIVIAN R1S, which places this file inside the Office of Defects Investigation queue for RIVIAN. Latest activity on this investigation was logged on 2026-05-26 - NHTSA updates that field whenever an Information Request goes out, a supplement is filed, or a status change is recorded in the public docket.
A Preliminary Evaluation like PE26004 is the entry point of the federal defect-investigation process. NHTSA engineers scan complaint databases, field reports, and manufacturer data to decide whether an Engineering Analysis is warranted, whether a voluntary recall is already sufficient, or whether the pattern does not rise to a defect finding.
Investigators summarized the matter as follows: "The Office of Defects Investigation (ODI) has received two Vehicle Owner Questionnaires (VOQs) reporting left rear toe link separation in certain Model Year (MY) 2023-2024 Rivian R1S vehicles. Both VOQs report component..." Investigations are the early-warning layer of the federal auto-safety system, sitting upstream of formal recalls and defect orders. Whether this one closes without action or escalates into an Engineering Analysis, the full history stays in the ODI archive so researchers, litigators, and buyers can pull the paper trail at any time. Related RIVIAN files, listed below, give context on whether this is an isolated concern or part of a broader pattern across the brand.
Investigation Summary
The Office of Defects Investigation (ODI) has received two Vehicle Owner Questionnaires (VOQs) reporting left rear toe link separation in certain Model Year (MY) 2023-2024 Rivian R1S vehicles. Both VOQs report component separation while driving, causing the vehicles to swerve across multiple lanes of traffic. One incident resulted in a collision with an adjacent vehicle and roadside barrier. In both separations, the bolt that maintains the integrity of the toe link fractured. Evidence collected from the complaint vehicles included repair histories, onboard video, imagery of the damaged components, and a police accident report. The two vehicles with reported separation have different vehicle histories. One vehicle received prior service and the other was involved in a previous collision. In both instances, the vehicles operated for multiple months and thousands of miles of usage with no apparent problems between the previous service or the previous collision and the failures that prompted this investigation. Rivian recognized the subject toe link joint’s sensitivity to service procedures in March of 2025 in its updated service procedures. In January 2026 through recall 26V-003, Rivian extended the improved repair procedure to vehicles that received toe link service prior to the March 2025 improvement. ODI is opening a Preliminary Evaluation (PE) to (1) assess the sensitivity of the rear toe link joint to foreseeable road and service conditions, (2) compare the physical failure evidence from the two VOQs to identify apparent similarities and potential differences, (3) evaluate Rivian’s current toe link repair procedure, and (4) assess the in-field subject population’s toe links conditions. To review the ODI reports cited in the Opening Resume ODI Report Identification Number document, go to NHTSA.gov
About This Investigation Type
A Preliminary Evaluation (PE) is the first phase of NHTSA's investigation process. It is opened when the agency identifies a potential safety defect pattern, usually triggered by consumer complaints, manufacturer reports, or field monitoring. During a PE, NHTSA gathers information to determine whether a formal engineering analysis is warranted.
Other RIVIAN Investigations
Data from NHTSA Office of Defects Investigation. Cross-references: NHTSA recall campaign API and NHTSA FARS where fatality records overlap. PlainCars does not rate or recommend vehicles. about how PlainCars sources NHTSA data.
Read our methodology - how this data is sourced, computed, and verified.