The 2009 Mark V Polo is developed on the newest platform PQ25, the same platform used in the SEAT Ibiza Mark IV that was launched in 2008 and the Audi A1.
Polo serije IV je nadaljeval ta trend deljenja osnove z SEAT Ibiza serije III in Škodo Fabia serije I in II, ki imata isto osnove in v več primerih tudi isti motor.