I was just wondering how long the XKR Superchargers last before they need to be replaced. I was also wondering if the normally aspirated engine lasts
allot longer than the supercharged version.

 

100K miles is typical but many have gone longer. If you want a better shot at extending the life you can do an oil change for the supercharger at 50K-60K mile intervals.

There is a little more heat under the hood, and there are more parts to potentially break, but the supercharged cars are still quite reliable.