The 3.0-litre supercharged V6 petrol engine that debuted in the Jaguar XJ limo in 2012 will make its way into the luxury off-roader and be available in Australia from the fourth quarter of 2013.
The six-cylinder follows the engine-downsizing trend by replacing the 5.0-litre normally aspirated V8 used previously by Jaguar-Land Rover and on which the V6 is based.
The new Range Rover SCV6 will be positioned on price between the $178,900 TDV6 Vogue and $195,100 TDV8 Vogue.
The direct injection, aluminium supercharged V6 produces slightly less power than the V8, with 250kW developed at 6500rpm, but is 15 per cent more fuel efficient. Land Rover has yet to detail a specific consumption figure as testing is still in progress.
Torque is rated at 450Nm, peaking between 3500 and 5000rpm, and the engine is paired with an eight-speed ZF auto as with the SUV's other engines, which comprise V6 and V8 turbo diesels and a supercharged V8 petrol.
Land Rover says the Range Rover supercharged V6 will accelerate from 0-100km/h in 7.4 seconds.
A new diesel-hybrid variant is also due to join the Australian Range Rover line-up in late 2013.