BMWs were plagued with breakdown issues of their own in the same time period you referred to for Jaguar. Granted, they're a top-of-the-line brand today, but still laden with gimicky features no one wants. For instance some of them now have this pointless option to accept or end calls just by waving your hand at the touchscreen monitor. Like that isn't going to cause endless sensor replacements when they wear out after 8 months? lol
every time you see them in dealerships, it's all warranty work.
Mercedes isn't in the same league as any others incl. Jag so we won't debate that. Their parts are stupid expense to this day, regardless.