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New Range Rover Sport HST Arrives With 400-HP Straight-Six

Reveal / 5 Comments

All new engine features electric supercharger and twin-scroll turbo.

Land Rover offers its penultimate Range Rover Sport with a variety of powertrain options, with four, six, or eight cylinders – naturally aspirated, supercharged, turbocharged, or even hybrid. And now it's rolling out another.

The new Range Rover Sport HST packs a 3.0-liter turbocharged six-cylinder version of JLR's efficient Ingenium engine family with a mild hybrid assist to deliver 400 horsepower and 406 lb-ft of torque. More potent than the existing V6 and running on a combination of gasoline and electricity, it'll sprint to 60 mph in 5.9 seconds and top out at 140 mph.

The high-tech powertrain uses a twin-scroll turbocharged and continuously variable valve timing, combined with a 48-volt electrical system powering a start-stop ignition and an electric supercharger that can spool up to 120,000 rpm in just half a second. Along with better response and balance, it improves on the old V6's carbon emissions by 12 percent, and its particulate emissions by 75 percent.

"Inline six-cylinder engines are inherently better balanced than V6 designs and our all-new Ingenium unit builds on that promise to optimize efficiency in all operating conditions," noted JLR product-engineering chief Nick Rogers.

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"Advanced features, including an electric supercharger, ensure distinctive Range Rover Sport performance and responses, while the intelligent MHEV system harvests energy to improve fuel economy and reduce emissions."

The mild-hybrid powertrain is being rolled out initially in a special edition that also features carbon-fiber accents, special badges and a suedecloth- and satin chrome-trimmed cabin. US pricing has yet to be announced, but it's available to order in the UK now for £81,250, making it slightly more expensive than the HSE Dynamic model with the similarly powerful but more electrified plug-in hybrid powertrain (but not as much as the more potent V8s).