A parliamentary report warns New Zealand faces a series of oil price shocks, with the first as early as 2012.
The report titled The Next Oil Shock says spiking prices will affect key industries including dairying, tourism and forestry.
It predicts each price shock will be followed by recession, as consumers cut back so they can pay for petrol.
The Green Party says the report makes a mockery of Government plans to spend $11 billion on new roads and investment is needed in sustainable transport, such as rail.
Co leader Russel Norman says spending that money on new roads will increase New Zealand's reliance on oil.
But the Road Transport Forum says 80% of all goods travel by road, and rail is not usually an option.
