My XC90 T5 (almost 2-yr old now):
First 12,400 miles, Volvo on Call reports 31.3 mpg average. Mostly Shell V-power 99, sometimes Costco 97 - around 6,200 miles and £1,200 a year fuel cost.
Daily 20 miles trip: 5 miles of 70mph, 4 miles of 50mph, the rest 20-40mph:
27 - 30 mpg, dreadful winter morning stuck in traffic 23-25. And during lockdown, 30+ due to quieter roads.
5-min local runs, 21 in summer and 17 in winter.
Motorway long trips App reading 32 - 36mpg (comfort mode 70 - 80mph cruising, heavy load and roofbox only reduce 1-2mpg).
BTW, I notice there is a 10% offset compared to brim-brim data (see attached screenshots).
