It's from Which? so cannot link as you need a subscription to view.
As a summary, across both 0-3 and 3-8 year old vehicles. 1 - Lexus, 2 - Toyota, 29 - Telsa, 30 - Land Rover.
Best 0-3 cars, Lexus CT first and Lexus NX second. Worst are LR Discovery sport, second worst LR Range Rover sport.
XC90 (3-8 years old, current generation) within the last 12 month there was a 74% fault rate and 15.8% breakdown rate. Doesn't seem to be a single issue causing the problems as they list issues with emission control, cooling, turbo, door handles, suspension, locks, interior trim. As a comparison Lexus 3 to 8 year old NXs have 15% fault and 2% breakdown rates.