High oil consumption MY09 Liberty

Hi,
I bought a MY09 Sports Premium Liberty Wagon brand new. From June last year, I noticed the oil light was coming on consistenly before each scheduled car service. All the service centre did was top up the oil and no thorough investigation was done to find the cause.
I recently did an oil consumption test over the last ~9,000KM and it is using between 500ml and 645ml of oil per 1,000KM.
I had a pressure test done and the pressures are all OK. It was noted one spark plug has signs of burning (oil) on the tip of the plug.
I've not noticed any large volumes of smoke exhaust, and there are no drips/leaks evident.
The Subaru dealer has provided this information to Subaru and they recommend replacing the 'short motor' as there is no other repair option.
I have tried to get my Subaru service dealer (and also Subaru Australia) to fix the issue under extended warranty at no cost, but have been turned down.
Has anyone else encountered this problem?
I have read about a USA class-action lawsuit for the same issue overseas, and wondered if there is the same here in Australia?
I am not impressed that we bought a brand new car and only managed to get ~120,000KM from the engine before needing a new short motor and I am keen to have the short motor replaced under warranty, especially given I reported the issue long ago.
Any advice/ideas are welcome, thanks.
I bought a MY09 Sports Premium Liberty Wagon brand new. From June last year, I noticed the oil light was coming on consistenly before each scheduled car service. All the service centre did was top up the oil and no thorough investigation was done to find the cause.
I recently did an oil consumption test over the last ~9,000KM and it is using between 500ml and 645ml of oil per 1,000KM.
I had a pressure test done and the pressures are all OK. It was noted one spark plug has signs of burning (oil) on the tip of the plug.
I've not noticed any large volumes of smoke exhaust, and there are no drips/leaks evident.
The Subaru dealer has provided this information to Subaru and they recommend replacing the 'short motor' as there is no other repair option.
I have tried to get my Subaru service dealer (and also Subaru Australia) to fix the issue under extended warranty at no cost, but have been turned down.
Has anyone else encountered this problem?
I have read about a USA class-action lawsuit for the same issue overseas, and wondered if there is the same here in Australia?
I am not impressed that we bought a brand new car and only managed to get ~120,000KM from the engine before needing a new short motor and I am keen to have the short motor replaced under warranty, especially given I reported the issue long ago.
Any advice/ideas are welcome, thanks.