MILLBROOK, U.K. – Jaguar Land Rover unveils the first gasoline version of its Ingenium engine family, claiming the flagship 300PS can achieve 15% fuel efficiency against existing powerplants.

The automaker says a host of technology has been applied to reduce energy-sapping friction and other “parasitic” losses within both the gas and diesel new-generation engines.

John Pepprell, JLR senior manager-engine planning and strategy, explains the new engines represent the latest step on the journey JLR began when it started designing and building its own powerplants in 2013.

“Our decision to go back into manufacturing our own engines was a major strategic decision and we have invested about £1 billion ($1.3 billion) or so,” he says. “We think this is a worthwhile decision to give us very competitive engines and give us the autonomy in terms of the direction we can now take the company.”

The decision also has a clear commercial strategy as JLR seeks to penetrate important global markets with the new gas engine.

“The petrol engine will be a global product going into our main markets of Europe, China and the U.S. China is very much a petrol market as is the U.S., where diesels are just beginning to make inroads, but (gasoline) remains key in these markets and we will be manufacturing it in China also,” Pepprell says.

“We have just entered mass production of the petrol engine now and we will be announcing at Paris auto show more details over which cars these engines will be going into. Depending on the models using the 296-hp version, the engine will be around 15% more efficient than the engine it will be replacing.

“We can’t talk about production volumes just yet, but suffice to say it will form a major part of our engine strategy.”

However, Pepprell is happy to list the key efficiency technologies being employed in the Ingenium family of motors. First on the list of improvements was the need to reduce friction losses within the engine using a modular design approach.