The current Defender engine is a 2.4 liter turbo intercooled diesel engine with the latest technology engine management system. The Td4 engine is greatly improved with the installation of a Terrafirma Power plug in both performance and economy. 28bhp and 45ftlbs of torque is typical making all aspects of driving this new Land Rover a real pleasure. Towing and off-roading are massively improved as torque is the big gain here. Fuel economy can improve by as much as 10% driven responsibly.

The Defender has a built in speed limiter which is also eliminated when a Powerplug is fitted improving the Defender's on road performance considerably.