2023 Rivian R1t Reliability Report

Owners of the 2023 Rivian R1T frequently report issues related to the power train, particularly involving the CV axle bolt and half-shaft. One owner discovered a nearly detached CV axle bolt during a routine tire rotation, while another experienced a detached front half-shaft, which had been repaired multiple times. Complaints also describe unexpected entries into "Limited Performance Mode," leading to complete power loss and stranding vehicles in traffic. Symptoms such as loss of regenerative braking and rattling noises from the front compartment are mentioned, with some incidents occurring at highway speeds around 80 mph. Safety implications include risks of loss of steering control, potential wheel loss, and significant danger during power failures in traffic, posing a risk of collisions.

Owners report issues with the 2023 Rivian R1T's Driver+ advanced driver assistance system, particularly the Adaptive Cruise Control and Highway Assist features. Complaints frequently mention that these systems fail intermittently, displaying a message that reads “Driver Assistance Features Unavailable – Service Soon,” and disabling functions even in clear conditions. This problem often starts around 1,200 miles and persists despite multiple service attempts, including computer replacements. Additionally, an over-the-air update, version 2023.42.0, reportedly disables all advanced safety features except blind spot warnings, leaving the center screen and climate controls inoperable. The safety implications include unexpected disengagement of automated steering and braking at highway speeds, which necessitates sudden driver intervention.

Owners of the 2023 Rivian R1T report issues related to vehicle speed control, particularly involving high regeneration mode. One complaint details a crash where the vehicle became uncontrollable in low traction conditions, with the driver noting a lack of traction control and anti-lock braking system functionality, which led to a loss of control and collision with a barrier. Another owner describes a high voltage battery failure at highway speeds, causing the vehicle to enter "turtle mode," significantly reducing speed. These reports highlight potential safety concerns, including loss of control and crashes, particularly in specific driving modes or conditions.

Owners report issues with the 2023 Rivian R1T's service brakes, including two incidents involving crashes. One complaint describes the vehicle being lane corrected and accelerating unexpectedly, resulting in a crash into a fence. Another owner reports a failure of the parking brake on an 8-degree slope, leading to the vehicle sliding into a house, with only two wheels locked while the others rolled. Both incidents highlight significant safety implications, including potential loss of control and property damage. These complaints suggest that the braking system, particularly the parking brake, may not adequately secure the vehicle on inclines or during unexpected maneuvers.