Jaguar Ingenium diesel (AJ200D)
Inline · turbocharged · diesel · 2015–present
Also known as: ingenium diesel, aj200d, aj20d6, 204dt, ad01, 2.0d jlr, 2.0 ingenium diesel, aj20d
Jaguar Land Rover's own modular four-cylinder family, in diesel and petrol forms, built to replace the Ford- and PSA-derived engines the company had used previously — fitted across the XE, XF, F-Pace, Evoque, Discovery Sport and Defender.
The diesel's known problem is the timing chain, and specifically the chain and tensioner on earlier examples, where wear produced a rattle and, in a proportion of cases, a jumped chain. It was common enough to generate extended-warranty attention. As always the noise precedes the codes, and on this engine a start-up rattle is not something to monitor.
The emissions stack — EGR, particulate filter and AdBlue — supplies the rest, with the familiar short-journey duty cycle behind most of it and oil dilution as the consequence worth catching early. The petrol Ingenium is a different proposition with the ordinary direct-injection turbo profile: intake-valve carbon and oil-dependent turbocharger life.
AJ is Jaguar's prefix for every engine it has ever built and carries no family information at all — the AJ-V6, AJ-V8 and AJ16 share it and share nothing else. Within Ingenium the designation does the work: AJ200D is this 2.0 diesel, AJ20D6 the 3.0 diesel six, and the petrol engines of the same family are a separate page.
Cars fitted with this engine
10 generations, across 2 makes. From the authored catalogue — an absent car means the catalogue has not reached it, not that the engine was never fitted.
Information, not instruction
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Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
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