The owner's manual says that using Performance mode (as well as Range mode) will reduce battery life. Or to put it another way, that range will decline faster if these modes are used regularly. I'd be interested in some quantitative numbers. I've never charged or driven in Performance mode. I've only ever used Standard mode, and Storage mode. (The latter when I'm away from home for an extended time.) I also know that the best performance is right after charging in Performance mode, and while the battery pack remains at or near full. But I'd be interested to know how far I can drive after charging in Performance mode before the performance drops to what I get in Standard mode, and how much faster I'll lose battery capacity if I use Performance mode, say, once a month, or once a week. I don't really ever need to use Performance mode. I'm just curious, and wondering if the occasional passenger would even notice the difference, and whether it's worth the accelerated battery degradation.