Tata Motors-owned Jaguar Land Rover celebrated the XJ's 50 anniversary previous year when it announced on multiple occasions plans for an all-new vehicle.
Customers are being contacted, and in a statement today a JLR spokesperson said: "Jaguar Land Rover is conducting a voluntary recall following the identification of Carbon dioxide performance variability with certain Jaguar and Land Rover vehicles fitted with 2.0L diesel or petrol engines".
The repairs could include software updates as well as physical alterations, with some Range Rover Evoque models possibly requiring new tyres.
A statement from JLR reads: "The modifications will be made free of charge, and every effort will be made to minimize inconvenience to the customer".
The issue was found by the UK Vehicle Certification Agency, which reported its findings to Jaguar Land Rover. In turn, the auto maker reported the issued to the Driver and Vehicle Standards Agency, which handles recalls, and an alert was issued via the European Commission's rapid alert system.
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The report adds there's 44,389 engines affected in the United Kingdom alone, with 9653 of those being petrol models.
Speaking with Automotive News Europe, Greg Archer, UK director for the European environmental pressure group, said: "JLR has clearly been minimizing the declared Carbon dioxide and under estimating emissions".
JLR's recall is not expected to have a material impact on the company's finances, but comes at a challenging time for the carmaker.
In January the firm confirmed it is cutting 4,500 jobs, with the substantial majority coming from its 40,000 strong United Kingdom workforce. It's too early to say, but we certainly wouldn't mind seeing the tenth-generation XJ with a similar appearance and a high-tech interior inherited from recent JLR products. Its CEO, Ralf Speth, has repeatedly warned the United Kingdom government against a "bad Brexit deal", which could cost the company billions per year. Only the headline has been changed.