Nothing is agreed yet, but Councillor Bassam Mahfouz is pleased with progress to establish step-free access at Greenford, Northolt and Perivale Tube stations.
"If you’ve got a scheme to save money on that scale we’ll be happy to look at it," he said.
Estimates by Ealing Labour could see lifts installed at all three stations for under £10million, a considerable saving from TfL’s original £10million quote for just Greenford.
Mr Mahfouz, who is lobbying transport bosses to pick up the project, said: "We’re delighted that Mr Qureshi has raised this very important matter at Mayoral Question Time.
"And we’re working very closely with TfL and London Underground to find a solution that can deliver step-free access at our stations, beginning with Greenford.
"We hope to have some further news soon and want to encourage everyone to join the step-free campaign by signing the petition."
The online petition has 129 signatures with supportive comments from residents.
Erle Jackson wrote: "I live close to Greenford station but have to drive elderly relatives all the way to Hillingdon to get step-free access in and out of London.
"One elderly neighbour has stopped using the Tube and no longer sees elderly friends similarly cut off in Perivale."
Mr Johnson cancelled plans to make stations more accessible for the elderly and disabled in 2009, although £2.9million worth of work had already begun at Greenford.
Sign the petition at www.ealinglabour.com/step-free-central-line.
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