THE purists might deplore the use of four-wheel drive over rear-wheel drive and "niggling" aspects such as a transversely mounted engine. But the X-Type remains true to the Jaguar promise of stunning looks and an involving drive. The 2.5-litre engine takes the edge off performance and, inexplicably, cruise control, steering controls and a trip computer are optional on the Sport model. A thoroughfare from boot to cabin also requires a further outlay.