Cupra Leon Hybrid without daily charging

I would be interested in how far the Leon plugin hybrid charges itself during the ride. I once had a plugin hybrid of another manufacturer as a car rental with which I was very satisfied, but I couldn’t charge it on vacation, which has charged itself during the ride at least so far by itself that you could perform sprints on the AB with full power. Or is it so that if the battery is empty, the permanently with the 1.4 Benzi so the plug-in hybrid only makes sense if I can charge it every day? By the 0.5% regulation it would of course make sense to get a plug-in, but I could only charge it every 3-4 days and have a 50km/day journey. Alternative would be the diesel. Thanks for your help