Jaguar, in choosing your stock air filter, chose a paper filter design. While paper does an adequate job of filtration, it's rigid solid nature renders it susceptible to clogging relatively quickly. While replacing it with another paper Jaguar air filter may be cheap, paper filters have to be replaced very often. K&N cotton drop in filters on the other hand are washable and reusable. If you were to JUST use OEM paper air filters, then over the life of your S-Type you would actually end up spending more than if you bought just one washable K&N filter and the appropriate amount of K&N cleaning kits.
Jaguar cars are well-known for its performance and the quality. If all the components in your Jaguar works perfectly, you can enjoy a comfortable driving. In your vehicle, Jaguar Air Filter is a contributing part which needs to be maintained perfectly. If you find any difference in the working of the Jaguar Air Filter you need to get the good quality replacement part. You should maintain your vehicle in a perfect working condition to have a smooth drive. Nothing can be done if, the Jaguar Air Filter does not work during the drive. You can avoid this problem by having a regular check on the working of the Jaguar Air Filter. When you find any defect in the functioning of the Jaguar Air Filter, you need to replace it as early as possible to get the best out of it.