The SD4 engine is a type of four-cylinder diesel engine produced by the British car manufacturer, Jaguar Land Rover (JLR). The engine was first introduced in 2011 and is part of JLR’s Ingenium family of engines.
The SD4 engine is available in both 2.0-liter and 2.2-liter displacements and is designed to offer a balance of performance and fuel efficiency. The engine is turbocharged and features direct fuel injection and variable valve timing, which helps to improve both power output and fuel efficiency.
In terms of performance, the SD4 engine produces between 150 and 180 horsepower, depending on the specific variant, and between 280 and 317 lb-ft of torque. The engine is paired with a six-speed manual or an eight-speed automatic transmission, depending on the vehicle model.
The SD4 engine has been used in several different Jaguar Land Rover vehicles, including the Range Rover Evoque, the Discovery Sport, and the Freelander 2. The engine has generally received positive reviews, with critics praising its power and efficiency, as well as its smooth and refined operation.