Tested: Hyundai, Genesis and Kia EVs can stop without brake lights coming on, but a fix is coming

Update: This article has been updated to reflect Kia's own service campaign announcement. 

Hyundai will be launching a "field service campaign to update the EV brake light logic" on its Ioniq 5 as well as the Genesis GV60, Electrified GV70 and Electrified GV80. According to Hyundai's director of communications, Michael Stewart, the change will be make to new production vehicles and as part of free-of-charge service campaign that will launch in July for approximately 56,000 vehicles already on the road.

"Regardless of the accelerator pedal input, the brake lights will now turn on when the deceleration rate exceeds approximately 0.13 G," Stewart wrote in an e-mail to Autoblog. Since this article was originally published, Kia has announced it will be performing the same update to its EV6 and Niro EV. Kia is also part of the Hyundai Group.

This change would seem to be in keeping with the behavior we have experienced in the Hyundai Ioniq 6, the firm's most recently introduced EV. We go into that behavior lower in this article.

This announcement comes in the wake of owner complaints as well as a test by Consumer Reports that found that most Hyundai, Genesis and Kia electric vehicles can come to a stop without their brake lights illuminating. This occurred when using those vehicles' most aggressive "i-Pedal" function that allows for so-called "one-pedal driving" where the driver can mostly rely upon the car's regenerative braking system (which is used to replenish the battery pack) to stop the car.

We tested this for ourselves this week as we are currently testing a Genesis Electrified GV70, and I personally own a 2023 Kia Niro EV Wave. I almost exclusively drive in i-Pedal mode. News Editor Joel Stocksdale tested the Hyundai Ioniq 6 in Michigan, and again, we will address his findings after the Genesis and Kia as they are completely different.

I attached an action camera to the rear of each car and conducted the same test in both: Accelerate to 40 mph and come to a stop without touching the brake and, crucially, without lifting my foot fully off the throttle. The result as you can see below with the Niro is that the brake lights do not come on until around 3 mph when I fully lifted off the throttle and bring the car to a full stop. I could not bring the car to a full stop without fully lifting off the throttle. I experienced the same result in the Electrified GV70.