According to the Decree nr.: 37/2007 of the Ministry of Economy and Transport the following sections are toll free sections:

SECTION
CH.
 CATEGORY
M5 Motorway between Budapest and M0 expressway (Gyál interchange) 13-22 D1, D2, D3, D4
M5 Motorway Kecskemét bypass (between road 5 and 54) 74-90 D1
M5 Motorway, between M43 and State Border 159-174 D1