I have had several Jaguars over the last few years (2 XF old model, and a XK) and was very pleased with the reliability. None of the 3 cars I had needed any warranty work.
The F-Pace is a new model as you know and this can cause issues, I had a Porsche Macan, again a new model at the time which after 4 months of ownership the dealership offered to give me a full refund because of all the issues I was having with it. So even the Germans can have issues with new models but I must say the dealership in questions was excellent and would buy from them again.
Hopefully I will not experience these issues again but the law changed October of last year which give buyers of new cars much more protection than before so if you did get a lemon of a car an exchange or refund should be a very simple job within the first six months of ownership.