Purchasing on 2006 Jaguar S-Type

I am thinking of buying a used 2006 Jaguar S Type with 14,000
miles. I asked my local auto guy who works on my employers fleet of cars and he said I would be sorry if I did due to the high cost of maintenance on it.
Id like some feed back asap my lease is up.

Asked by for the 2006 Jaguar S-Type
u better be making six figure to keep up with the maintance