What alternatives should I consider to a used Jaguar X-Type saloon?
The BMW 3 Series is the most obvious rival, and was the car the X-Type was aimed directly at when it was launched. The E46 3 Series model was replaced in 2005 by the more modern E90, but both are exceptionally good to drive with very frugal diesel engine options.
The Audi A4 went through a change of model during the X-Type’s time in production, too, but both are essentially the same, with decent space, high quality interiors and a choice of very good TDI diesel engines.
The Mercedes C-Class is another good option, but you have to buy with care. The pre-2006 model is troublesome from a reliability point of view, although the post-2006 car is a much better proposition with better reliability prospects and superior handling and ride comfort.