Feds Reject Tesla One-Pedal Driving Recall Petition
▼ Summary
– Federal regulators have concluded that one-pedal driving is not causing Tesla vehicles to experience sudden unintended acceleration while parked.
– The National Highway Traffic Safety Administration rejected a petition to force a recall of all Tesla EVs built since 2013 over this issue.
– Electric vehicles use regenerative braking to recover energy, which in some models activates when the driver lifts their foot from the accelerator.
– Unlike some other EVs, Tesla, Rivian, and Lucid vehicles use only traditional hydraulic brakes and rely solely on lift-off for regenerative braking.
– A 2023 petition to NHTSA claimed that one-pedal driving could cause a cognitive “short-circuit” in drivers, but this claim was not substantiated by the agency’s findings.
Federal regulators have determined that Tesla’s one-pedal driving feature is not responsible for incidents of sudden unintended acceleration in parked vehicles. The National Highway Traffic Safety Administration has officially denied a petition calling for a recall of all Tesla electric vehicles built since 2013. This decision follows a long history of sporadic complaints alleging that certain Tesla cars have accelerated unexpectedly while parked, a phenomenon the auto industry terms “sudden unintended acceleration.” The core debate has consistently centered on whether the root cause is driver error or a fundamental flaw in the vehicle’s engineering. The NHTSA’s rejection underscores its finding that the evidence does not support a defect in Tesla’s accelerator pedal assemblies, motor control systems, or the one-pedal driving functionality.
The technology at the heart of this discussion is regenerative braking, a system that converts an electric vehicle’s kinetic energy back into stored battery power during deceleration. In many electric and hybrid models, this regeneration is seamlessly integrated with the traditional friction brakes through a brake-by-wire system. The driver uses the brake pedal normally, and the vehicle’s computer decides the optimal blend of regenerative and mechanical braking. However, Tesla, along with manufacturers like Rivian and Lucid, employs a different approach. Their systems primarily use “lift-off regen,” where the electric motor begins regenerative braking the moment the driver’s foot is lifted from the accelerator pedal.
When this programming is configured to bring the car to a complete stop without ever touching the brake pedal, it creates the experience known as one-pedal driving. Driver opinions on this feature vary widely; some enthusiasts praise its intuitive feel and efficiency, while others prefer the familiar two-pedal operation. The rejected petition, filed by an independent engineer, argued that the design could create driver confusion, suggesting it might lead to a “pedal misapplication” scenario where a driver mistakenly presses the accelerator when intending to brake. Regulators, after a thorough review, concluded that the data from vehicle logs and crash incidents did not validate this claim, effectively ruling the one-pedal system out as a safety defect requiring corrective action.
(Source: Ars Technica)
