This engine is a 3.0L six-cylinder diesel engine that was used in several Land Rover, Jaguar, and Range Rover vehicles from 2009 to 2015. The engine was marketed as being reliable and eco-friendly, but some users experienced reliability issues with it, as is not uncommon with many vehicle engines.
In terms of specifications, the 306DT engine has a displacement of 2993cc and 24 valves, and it produces 249bhp of power and 183kW overall. It is a diesel engine, which generally means it is more fuel-efficient than petrol engines, but may produce more emissions.
It’s worth noting that Land Rover has since released newer engine models to replace the 306DT in their vehicles, so this engine is no longer used in current Land Rover, Jaguar, or Range Rover models.