All of the new XC90's engines come from the Swedish firm's Drive-E engine family. Headlining the range will be a T8-badged petrol-electric hybrid model, featuring a 2.0-litre, four-cylinder supercharged and turbocharged unit in conjunction with a 79bhp electric motor which is used to drive the rear wheels.
The sequentially-charged engine - where the supercharger acts low-down in the rev range and the turbocharger boosts top-end output - has a combined power figure of 395bhp and 472lb ft of torque. Its headline CO2 emissions of just 60g/km has lead Volvo to claim that "there has never been an SUV offering this level of power this cleanly".
The hybrid XC90 will be able to travel for up to 25 miles on electric power alone. Volvo says space inside the car isn't compromised by the addition of a large battery pack, as the Scalable Product Architecture (SPA) platform on which the car sits was designed from the start to include hybrid technology. The XC90 is the first Volvo to be based on the new platform.
Also joining the T8 at launch in the UK will be D5 and D4 diesel units. The D5 is a 2.0-litre, four-cylinder twin-turbocharged engine with 222bhp and 347lb ft of torque, and is capable of around 47mpg. The D4, meanwhile, is a conventional turbodiesel with 187bhp and 295lb ft of torque, with fuel consumption sitting at around 56.5mpg.
Both diesel options also come with a new i-ART injection system, which can deliver precise amounts of fuel to each cylinder as required. Previously, the XC90 has only been available with an older D5 powerplant.