The new network has been plagued by issues such as late and overcrowded buses. (File photo)

Greater Wellington Regional Council is considering ordering an independent review into its bus network debacle as problems continue with the new system.

Meanwhile, the Government is not considering stepping in to help sort out the "real failure".

Chief executive Greg Campbell said in an email to stakeholders on Tuesday a review could be commissioned "to ensure that all available options have been considered".

"The bus transition in Wellington was always going to be a major challenge as council chose to implement all changes together, from fare changes [to] new ticketing systems, new routes, new buses, new contracts, and new operators," he said.

Greater Wellington Regional Council is considering an independent review into its bus network fiasco. (File photo)

"The complex programme of work has been managed well. However, changing a decades-old network has affected a lot of commuters. While some are happy, others are not."

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Campbell was pulled of all other council duties last week to focus exclusively on resolving the bus issues in Wellington City.

To accommodate the change, environment management group general manager Nigel Corry will take up a temporary deputy chief executive role, overseeing non-public transport duties for the next three months.

Public transport general manager Wayne Hastie will work full-time alongside Campbell, with rail operations manager Angus Gabara to fill Hastie's role.

SUPPLIED Chief executive Greg Campbell said the new network was always going to be a major challenge. (File photo)

Campbell acknowledged there had been capacity and lateness problems on some routes and real-time information boards had not been working properly.

However, he was "absolutely confident that we can and will resolve these issues".

"My initial focus is single-mindedly on operational performance. We simply have to get the services and technology operating better ... We will also be working to address key pain points."

Performance reviews had started with bus operators Tranzit and NZ Bus and would be held two or three times a week until further notice, Campbell said.

SUPPLIED Public transport general manager Wayne Hastie will also focus exclusively on the bus issues. (File photo)

Progress had also been made on the most common issue with the real-time information boards – the "due" sign dropping off before a bus arrived.

Campbell said he had sought the help of industry personnel from outside the council to help fix the network, while also calling on the council's best minds.

"The bus transition is an extraordinarily exciting story. It has brought [a] new fleet, electric vehicles, fare concessions, and higher-frequency services.

"I am absolutely confident that with appropriate focus, we can settle the network down and be sure that Wellington begins to see and feel these benefits."

On Wednesday, Transport Minister Phil Twyford said he did not believe there was any need for his intervention.

He noted the council's intention to commission an independent review.

Before changes took place he wrote to the regional council asking for an assurance that they had it "all in hand so commuters would not be unduly disadvantaged".

He said he was disappointed by the outcome that saw commuters "bear the brunt of a real failure".

"I just want to see this sorted out as quickly as possible."