It seems to be the transmission intermittently. I’d stop, push down on the accelerator and would go like a few MPH. Then it would lunge forward and I’d have to slam on the brakes to avoid hitting the vehicle in front of me. The other thing was it didn’t seem to shift from first gear — I ended up redlining it at 7000rpm when only going 45mph. I’ve read that there is a problem with Nissan cars and the CVT. In answer to your questions: You can inspect it. At a stop/light, I’m always afraid the accelerator will start out slow and then lunge forward and eventually I’ll hit another vehicle. The dealer couldn’t reproduce the issue after having the vehicle 6 days. After 3, they ‘re-programmed’ as the service manager said it was out-of-date and that doing so may fix the problem. They then tested for a further 3 days and couldn’t reproduce it. Vehicle has only been inspected by the local Nissan dealer. There were no warning lights or messages before or after these incidents.