Transport for London budgeted 2.26 billion pounds for the London Underground in 2016. Even at peak exchange rates from 2014, that's $3.8 billion. The MTA spent $8.18 billion on the subway in 2017. The London Underground handles about 5 million rides per day, versus a bit under 6 million per day for the NYC subway. So the NYC MTA spends 120% more to serve about 20% more subway riders.
Transport for London budgeted 2.26 billion pounds for the London Underground in 2016. Even at peak exchange rates from 2014, that's $3.8 billion. The MTA spent $8.18 billion on the subway in 2017. The London Underground handles about 5 million rides per day, versus a bit under 6 million per day for the NYC subway. So the NYC MTA spends 120% more to serve about 20% more subway riders.