 Where those buildings already provide an hour free, hybrid vehicles are entitled to an extra hour free.In the Republic of Ireland, a discount of up to €1500 on VRT for hybrids, and up to €2500 for plugin hybrids was available until 31 December 2012.Previously there was a potential reduction of 50% of VRT applicable before July 2008, when VRT rates were based on engine size, rather than the emissions system.