June 2020
June 2020 - last edited October 2021
Simcitybuildit
June 2020
I am not sure it is solely city level, i have seen a huge variation in "features" between cities, that seem to come and go.
Level 39 city has had manufacturing ad speed ups for probably getting on for 2 years, will get 5 or 6 in a row (all 5 slots as you swipe away from the factory) with a couple of minutes or so between them working again, then there is a cool off for a little while before they work again. Never bought Premium Pass there, so dont know if it stops it.
In fact, I try to change as little as possible there as I do not want it to stop
June 2020
From what I can see if you spend money on the game it "rewards" you by removing the factory ads. It's more of a punishment to me because now you can't get speed ups for factories. Maybe the game could ask rather than assume you don't want it.
June 2020
June 2020 - last edited June 2020
It depends when you started paying for mayor's pass. The factory ads haven't been around since the start. Maybe 6 months ago?
edit: at least a year they've been around