The jaguar xjr is being reviewed by various outlets, with some focusing on specific model years such as 1993, 2003, 2004, and 2014. These reviews discuss the car's performance, reliability, and luxury features, with some comparing it to other vehicles like bmws. The reviews cover a range of models, including the xjr-s and xj r-sport, but it is unclear which specific model is being highlighted in the overall review.