Oyster card users are paying up to £107 more to travel each week on London's transport network compared with contactless card users, research shows.
London Assembly Member Val Shawcross said a discrepancy had arisen between pay as you go (PAYG) Oyster cards and contactless bank cards.
While Transport for London (TfL) has introduced weekly caps on contactless cards, only daily caps apply on Oyster.
TfL said: "The same fares apply to both contactless and Oyster."
Analysis from the Labour party found passengers using PAYG fares travelling between zones 4 and 7 during peak-time seven days a week would pay £137.20.
Passengers travelling between the same zones but using contactless would spend £29.40.
Similarly, commuting through zones 1-4 on a seven-day basis would cost PAYG commuters £74.20 while contactless payment users would be charged £45.
