T5s do have their faults which are well documented online.. Dual mass flywheels have been known to go wrong, egrs, n75(also known as moo valves), driveshaft issues..
All said and done they’re no worse than any other vehicle on the road. I’m on my second T5 now, had a ’04 1.9 and liked it so much that after 18months I went out and bought one brand new so now have a ’14 140ps lwb highline.
Have a drive of one and see what you think, if you want to drive it like a car don’t expect great economy but if you’re happy to pootle along with the traffic they’re pretty good on fuel, mine averages high 30s to low 40s mpg which for a two tonne brick is pretty respectable.