Craig, I don’t know how much you already know, so forgive me if I’m stating the obvious here...
The car is a jaguar X Type, it was indeed built on the Mondeo platform, Ford owned Jaguar at the time and included Jag in its Premier Automotoive Group (PAG) which included Jag, Volvo, Aston Martin. It shared a number of ‘customer facing’ components, like switches etc, with the Mondeo too, causing much criticism.
They were produced from 2001 to 2009. I believe they came with various I4 Diesel engines and V6 petrol engines.
I’ve no idea what year or type yours is, finding out what engine is in would narrow things down a lot.
It was a disaster for Ford / Jaguar. The factory was built with an ‘installed capacity’ for 200,000 units per year, but they only built around 350,000 IN TOTAL.
They can be picked up here in U.K. for as little as £300.
Can’t you just give it him back ??