On standard suspension at low speeds the XC90 tends to pick up on cracks, bumps and expansion joints a fair bit more than standout rivals - in this respect – such as the Land Rover Discovery and Audi Q7. However, the ride becomes smoother at higher speeds, allowing the big Volvo to settle in to a comfortable motorway cruiser.
The optional air suspension costs quite a bit extra. While it offers better absorbency over large lumps, such as sleeping policemen, it doesn't improve the ride to any noticeable degree on patched-up city streets, so we’d say save the expense and stick to the standard springs.
Meanwhile the T8, despite its increased weight from the heavy batteries, manages to be the most comfortable of all the XC90s. Whichever model you choose, though, we’d suggest going for the smallest wheels possible. Essentially, the smaller the wheel, the better your XC90 will ride, so avoid the vast optional 22in alloys at all costs.