The order for the report produced by Jim Steer on the extension, the discussion paper prepared by the Office of the Co-ordinator-General and the capital expenditure documents relating to the M4 East motorway that discusses the Victoria Road extension were all requested by Greens MP Lee Rhiannon.

The Government opposed the order, with Labor MP Penny Sharpe arguing there was no set route and all options were still on the table.

She said an M4 extension would only go ahead before 2012 if the Federal Government substantially funded it.

``The fact remains that the Government is currently not in a position to extend the M4 motorway,'' she said.

``It would be reckless to commit to this massive infrastructure without an appropriate funding model.

``For those reasons this call for papers is unnecessary and the Government opposes it.''

But the Opposition and cross-benchers teamed up to vote against the Government.

Nationals MP Trevor Khan said the extension had been announced off and on since 2002 with nothing happening.

``The Labor Government has been sitting on these reports,'' he said.

``It is time for the Government to come clean and make the reports available.

``It will only be through this motion those reports will be made available.''

The documents must be made available within 14 days.