Petrol prices are likely to remain stable over 2011 but will slowly creep up, say analysts.

Petrol prices are falling at Australian pumps - but oil companies in NZ say motorists shouldn't expect the same here.

Motorists stung an extra 3c a litre of fuel by the new Emissions Trading Scheme will have a lot more to complain about in October, warns the Automobile Association.

Farmers, foresters and others questioned the integrity of the Kyoto Protocol and the theory of global warming at an ETS meeting in Blenheim.

Petrol prices will rise tomorrow as the Govt's ETS hits households and businesses already facing rising costs.

Tax increases could add another 10 cents a litre to the price of petrol by the end of the year, says the AA.