The new Volvo XC90 T8 Twin Engine petrol plug-in hybrid driven in Tarragona, Spain

Looks like Gothenburg’s claim of providing both brisk performance and outstanding fuel economy in the intriguing range-topping Volvo XC90 T8 Twin Engine – making its way into showrooms later this spring – have rung true, as final specifications reveal that the plug-in hybrid seven-seater SUV may be even more impressive than we once thought.

As previously reported, it features the same turbo- and supercharged 2.0 litre Drive-E four-cylinder petrol engine and eight-speed automatic transmission as on the T6; but all-wheel drive is now provided through a rear electric motor instead of a conventional transaxle. There’s also a 34 kW crankshaft-mounted starter generator (CISG) between the engine and gearbox, providing an extra 150 Nm of torque when needed.

What we now know is that both the 320 hp/400 Nm engine and the 87 hp/240 Nm rear motor are 2 hp and 5 hp more powerful than previously claimed, respectively – so the final combined power figure is now 7 hp up at 407 hp (torque stays the same at 640 Nm).

The new Volvo XC90 T8 Twin Engine petrol plug-in hybrid driven in Tarragona, Spain

There’s more: the sprint time from 0-100 km/h is now quoted at 5.6 seconds instead of 5.9, CO2 emissions have been revised downwards to 49 grams per kilometre (g/km) – down from 59 g/km, itself over 20 g/km less than the previous target – and all-electric range has gone up 3 km to 43 km. Additionally, Volvo has finally released an official fuel consumption figure, which stands at an astounding 2.1 litres per 100 km.

“We have been working hard to earn our competitive edge and to give our customers the ultimate combination of performance and low fuel consumption,” said R&D senior vice president Peter Mertens. “Our Twin Engine technology has enabled us to build on our heritage of efficient powertrain development in a completely new way. Thanks to our new scalable product architecture, and our world-class four-cylinder engines, we have a clear and leading position.”

Over here in Malaysia, the new XC90 is now open for booking, with an official local introduction expected between August and September 2015 – this T8 Twin Engine is rumoured to be the sole offering for now, with pricing said to range between RM500k-550k. Excited for future 407 hp school runs?