Audi a3 taking off slow

Hi all, I’ve recently acquired an 2013 Audi A3 1.8 TFSI. Everything’s fine, just besides the fact it sometimes takes a long time to take off. Only happened about a week after having it. For instance 50% of the time i’ve got to put my foot all the way down to get it past 70km/h. just quite annoying as it wasn’t doing this before and would take off quickly. Anyone got any suggestions on what could be going wrong