Eight, not 15, NGR trains ready for Games

Only eight of Queensland's trouble-plagued New Generation Rollingstock trains will be in service by the Commonwealth Games, despite a report claiming at least 18 were needed.

The transport plan for the April 4 to 15 sporting event on the Gold Coast was released on Sunday, with Queensland Rail's southeast network significantly altered to make up for the demand.

Transport and Main Roads Minister Mark Bailey said eight of the NGR locomotives would be ready, well short of the 15 his predecessor Jackie Trad last year hoped to have on the track.

A state government-commissioned report by German rail operator Deutsche Bahn, released in July 2017, found at least 18 of the NGR trains would be needed to bolster the network in time for the Games, which will rely heavily on public transport.

When asked why only eight would be ready, Mr Bailey said the government had been left to "clean up the mess" made by the previous Liberal National Party government when it signed the contract for the imported trains.

Queensland Rail chief executive Nick Easy told AAP on Monday eight NGR trains were needed to "service the Commonwealth Games timetable".

"This will be achieved well in advance of the Commonwealth Games, with seven in operation on the network as of today," he said in a statement.

"Our rail timetable maximises our train crew and rolling stock resources, while working within the capacity of our network infrastructure."

Only a portion of the 75 trains have arrived in Queensland after a raft of safety concerns were identified, including line-of-sight issues, breaking and disability access.

Mr Easy has previously said some of the trains had to be modified in Australia because they were built before the problems came to light, while the others would be fixed during construction.

He said on Monday that each new train underwent a rigorous testing process before it joined the fleet and "this takes time".