When accelerating in hybrid mode, the vehicle loses power and forcefully reduces speed. A ‘Performance extremely limited’ message appears on the driver console. Sometimes it gs into ‘turtle’ mode, limiting performance until the car it is turned off. Sometimes the ‘check engine’ light comes on, with or without the ‘turtle’ light. This is a safety issue when you are trying to accelerate onto a highway and the car reduces speed, thus increasing the risk of being rear-ended in heavy traffic. There are times when the car loses power and there is no emergency lane to move into. The car has been taken to the dealership’s service department multiple times and the issue has been confirmed. They tried updating the software but it did not resolve the issue. This occurred for the first time about 4 months after purchasing the new vehicle. It had 3500 miles on it. There are many reports of this happening to others. https://www.mercedesgleforum.com/threads/sadly-our-new-2025-gle-450e-is-not-living-up-to-the-dream.4436/