On the Dash:
- NHTSA opened a new investigation covering 114,922 Rivian R1S and R1T models over rear suspension safety concerns.
- Regulators are investigating whether fractured toe link assembly bolts pose broader durability risks beyond improper servicing.
- Rivian’s ongoing suspension scrutiny could increase pressure on EV retailers’ warranties, services, and customer confidence.
The National Highway Traffic Safety Administration (NHTSA) has opened a preliminary investigation into 114,922 Rivian R1S and R1T vehicles following reports of rear toe link separations that allegedly caused sudden swerving incidents and at least one crash.
NHTSA’s Office of Defects Investigation identified two separate incidents involving 2023 and 2024 Rivian R1S SUVs. In both cases, drivers reportedly lost stability after the left-rear toe-link assembly separated while driving.
One incident allegedly caused the vehicle to veer across multiple lanes before colliding with another vehicle and a roadside barrier.
Factured assembly bolts
Federal investigators say the toe links themselves did not fail. Instead, the bolts securing the toe link assembly reportedly fractured.
Investigators reviewed repair records, onboard video footage, photographs, and a police crash report as part of the preliminary evaluation. While one of the affected Rivian SUVs previously underwent service work, the second vehicle had reportedly been involved in an earlier collision. Despite those differing histories, both vehicles reportedly operated for months and accumulated thousands of miles before experiencing sudden failures.
Previously suspension concerns
Rivian has faced prior scrutiny over rear suspension issues tied to improperly reassembled toe link joints. The automaker previously warned that incorrect servicing procedures could place unintended stress on suspension components over time.
Rivian updated its repair guidance in March 2025 after identifying servicing concerns. In early 2026, Rivian recalled nearly 20,000 R1S and R1T models due to rear suspension issues. However, the company determined technicians had been using outdated repair procedures dating back to 2022.
The latest federal investigation now seeks to determine whether the issue extends beyond service-related errors.
NHTSA’s new evaluation will examine how the rear toe link assembly performs under real-world driving and servicing conditions. Investigators are also comparing damaged parts from both incidents to identify potential similarities or broader design vulnerabilities, adding pressure on Rivian as the EV maker continues addressing quality, durability, and service-related concerns tied to its flagship vehicles.
The outcome could influence future recalls, service procedures, and consumer confidence in Rivian’s growing EV lineup.
