A bad brake booster can put your Jaguar F-type's braking system in jeopardy, as a result of which you might end up in a deadly collision. So, if you're detecting any of the above-said signs when driving your car, there's a good chance its brake booster is failing and needs to be replaced or repaired immediately.
https://www.youtube.com/watch?v=oVm-XUwGPQM
