Australia Post has been forced to take its entire fleet of new electric delivery vehicles off the road due to safety concerns as it begins its busiest time of the year.
Removing the three-wheel vehicles from service comes as Australians send a record number of parcels through the post in the lead up to Christmas.
'They've all been pulled from use Australia-wide,' a source told Daily Mail Australia. 'Three weeks out from Christmas, on a Monday. It's created chaos obviously.'
Australia Post began trialling the electric delivery vehicles (eDVs), which have triple the carrying capacity of standard motorbikes, in 2017 and ordered 1,000 more of them this year.
The eDVs are supposed to be the future of parcel delivery for the postal service and will make Australia Post the nation's largest electric fleet operator.
Posties have dubbed the electric trikes 'Mr Bean' buggies after the three-wheel Reliant Regal that Rowan Atkinson's hapless character routinely ran off the road in the British comedy TV series.
Australia Post has been forced to take its entire fleet of new electric delivery vehicles (pictured) off the road due to safety concerns as it begins its busiest time of the year
Christmas mail volumes are already greater than they were at the same time last year. Over the peak period Australia Post expects to deliver up to 3.5 million parcels on its busiest day
Members of the union which covers postal workers, the CEPU, were informed of the withdrawal of all eDVs by text message on Saturday afternoon.
They were told the vehicles were being taken off the road 'immediately and until further notice' after a 'safety incident' late last week.
An Australia Post spokesman said the government-owned corporation had taken 'precautionary action to temporarily withdraw' the fleet of vehicles.
It was working with the Swiss manufacturer to address safety concerns with the front axle of the vehicles.
'The safety of our people is paramount, importantly no one has been injured due to this issue, and we will only commence delivery with these vehicles once the manufacturer can confirm all axle issues are addressed,' the spokesman said.
'At this stage we don’t expect any impact to delivery services during this busy time of year.'
Australia Post's group chief operating officer Bob Black said in February the 1,000 new eDVs would benefit posties, customers and the environment.
'We are proud to soon be operating Australia's largest fleet of electric vehicles, and hope this will set the standard across Australia,' Mr Black said.
'With parcel volumes growing - on average, close to 10 per cent each year for the last three years - and letter volumes declining, we're