2025.5 Volvo XC90 T8 AWD First Test: Simpler, Swifter, Better
Volvo’s beloved three-row plug-in-hybrid SUV’s new simplified powertrain delivers more of what the environment needs in a PHEV.Pros
- B transmission mode a great quasi-one-pedal option
- Ample EV power for around-town cruising
- Reasonable day-trip range and overnight recharging
Cons
- Abrupt engine engagement in Hybrid mode
- Front-biased power challenges traction
- Laggy screens
We’ve heaped a ton of praise on the second-gen Volvo XC90 luxury three-row SUV, from crowning it our 2016 SUV of the Year to marveling at its continued viability nine years later, when it was ostensibly meant to be replaced by the all-electric EX90. Well, it’s still here, we’ve driven all its variants, tested the midgrade B6 trim, and now strapped our gear to the range-topping T8 plug-in hybrid version. Have we found a hole in this SUV’s armor this time around?
Simpler
Not really. This 2025.5 model is the automotive epitome of working smarter, not harder. Its powertrain is vastly simplified and at the same time measurably better at its job. When we first praised the T8, its powertrain comprised a four-cylinder engine that was assisted by not just a turbocharger and belt-driven supercharger, but also a mild hybrid helper motor sitting just ahead of the transmission, with a more powerful second motor powering the rear wheels.
Nowadays, that same basic 2.0-liter turbo makes about the same output sans supercharger. And despite ditching its 46-hp/111-lb-ft helper motor, swapping in a 143-hp/228-lb-ft motor in the rear (replacing an 87-hp/177-lb-ft unit), and roughly doubling the size of its battery, total system power jumps from 400 hp and 442 lb-ft to 455 hp and 523 lb-ft. Gotta love modern math.
(Cake icing: Doubling the battery size apparently offset the weight of the supercharger and front motor, as this ’25.5 T8 Ultra weighed precisely the same 5,132 pounds as the 2017 T8 Inscription range-topper we tested, while improving front/rear distribution by a percentage point, to 51/49.)
Swifter
In lieu of that supercharger, the new engine employs the Miller cycle. This efficiency booster is where the engine runs a high mechanical compression ratio that’s offset by leaving the intake valves open during part of the compression stroke, reducing the negative work on the crank and effective compression, while allowing a full expansion ratio. (This trick is called Atkinson cycle until you bolt on a turbo or supercharger; then it’s a Miller cycle). The hole-shot launch doesn’t improve that much, so the 0–60 time only drops by a tenth—to 4.9 seconds—but at the quarter mile the new car is half a second and 8.8 mph out in front of the older one, at 13.4 seconds and 105.9 mph.
Less Grippy?
Tire compounds may have changed over the past eight years, because the tire sidewall markings suggest they’re similar and yet an identical, better distributed curb weight resulted in a 6-foot longer 60-mph stopping distance (a still quite respectable 121 feet), a less tenacious 0.80 g of maximum lateral grip (down from 0.84), and a 1.1-second-slower figure-eight lap (differences in stability-control programming likely account for some of this time difference).


