Fire and Rescue Superintendent Paul Johnstone said the man set himself alight while inside a car about 1.15pm on Saturday.

The man had been pulled from the car and treated by the time firefighters arrived, Superintendent Johnson said.

A NSW Ambulance spokeswoman confirmed paramedics had attended a "self harm" incident at Hazelgrove Road but would not comment further.

The man was taken to Oberon Hospital with severe burns to his body.

He is in a "very serious condition", a hospital worker said.

It’s understood that there’s no relation between this incident and three recent cases, the latest occuring on Friday, of Tamil asylum seekers setting themselves on fire.

Tamil asylum seeker Leo Seemanpillai set himself on fire in Melbourne in May and died with burns to 90 per cent of his body, while another man also attempted self-immolation in Sydney in April.

On Friday evening, a third Tamil asylum seeker, aged 40, was taken to hospital after he reportedly doused himself with petrol and set himself alight in his Melbourne house.

Residents in Oberon were shocked by the news and said the man was a local and aged in his 40s.

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