http://citizensinformation.ie/categorie ... #FurthInfo
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From July 2008 there will be two separate tax systems for cars. Cars under the original motor tax system will continue to be taxed based on engine size (cc). New cars registered from July 2008 will be taxed based on their CO2 emissions level. New cars purchased in the first six months of 2008 will be switched to the CO2 system on first renewal of motor tax after July 1st 2008, if the tax rate is lower.
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Does that mean that if a car regged april 08 is taxed on old system at 300e but 600e in new system it stays on 300e?
That's how I'm reading it anyways.