The first 370 cars promised as part of the new Garda fleet will go to the force's Traffic Corps.
They were officially unveiled yesterday by the Taoiseach at Garda headquarters in Phoenix Park and are funded from a €10m package announced on Budget Day.
The funding has been used to buy 265 liveried cars, comprising 85 Hyundai i30 estates, 160 Hyundai i40 estates and 20 Opel Insignia Sports Tourer-Traffic.
The force has also bought 80 unmarked cars including 30 Ford Focus saloons and 50 Hyundai i40 saloons. Another 25 unmarked vans have also been bought.
Taoiseach Enda Kenny said the new fleet would target crime and protect communities.
"The provision of these new vehicles is being accompanied by the recent recruitment of new Gardai, marking the Government's commitment to enhancing the police presence in communities and supporting An Garda Siochana in tackling and preventing crime," the Taoiseach said.
Mr Kenny met Justice Minister Frances Fitzgerald and Garda Commissioner Noirin O'Sullivan and discussed reform of the force following the publication of a report by the Garda Inspectorate.
The report said the Garda Pulse computer system was not "fit for purpose" and said it should be replaced by a more modern system for recording serious crimes.
However, Ms O'Sullivan said very "comprehensive requirements" had been identified by a new committee set up to look at Garda ICT (information and communication technology needs).
"It isn't just about Pulse. It's about actually creating a modern and effective ICT system that facilitates and enables the working of An Garda Siochana and we're very focused on doing that," she said yesterday.
Ms O'Sullivan also said the committee, which includes representatives from government departments, was examining all the recommendations made by the Garda Inspectorate.
Recommendations have also been made by the Justice Committee, and the commissioner said these would be considered as part of the force's "fundamental transformation programme".