You’ll know before you collect your car whether there are inherent reliability problems as many will be on the road by then. It is a new model after all, and teething troubles are always going to happen.
That said, if I worked for Jeep and I knew it was going to be featured on the best watched car review platform, by a person who appears to speak his mind, then I’d make sure it was the best prepared vehicle I’d ever put out. So, they’re either very incompetent or very unlucky, and it’s probably the latter.
My current lease is a Volvo XC40 and within a few months it had a complete coolant system failure which resulted in every component related to that needing changed. Volvo and quality are normally good bed fellows, but mine still failed. About a year ago, during its last service, I asked them to check the brakes as there was a vibration which grew according to how hard you pushed the pedal. I assumed there might have been some debris stuck, or some such small issue, but actually they ended up changing all four discs and pads as every one of them was warped! I’ve never had that happen in any car before and I’ve had many. Sometimes you get a rogue, a Friday nighter, a lemon. Hopefully yours will run trouble free for the three years.