NHTSA Complaint #11645558 — 2007 FORD ESCAPE

My 2007 Ford Escape Hybrid (mileage currently 180,000 but the issue started around 150,000 miles) will occasionally (varies from once a week to once every 3 months) not respond properly when I'm accelerating from a stop. When this happens, I can push the accelerator all the way to the floor, but the car will accelerate very slowly for the first 5 seconds or so, and then start accelerating normally again. When this issue first began, it nearly resulted in multiple crashes when I was pulling out into traffic, but now I leave lots of extra space when pulling into traffic in case this happens. I've taken the car to an independent mechanic to try to diagnose the issue and they were unable to observe it since it doesn't happen frequently or predictably enough. There were not any warning lamps, messages, or other symptoms of the problem prior to the issue starting.