3 or 4 year Bachelor Degree? (Engineering)

You're right, it's because the first year just provides a very general foundation for engineering. The first year content of most courses will be similar to NUI Galway's year 2 content.

Thanks for answering!

So if i was %100 sure on what type of engineering I would like to do there's no point of that extra year?

Thanks for the effort, I was thinking of Queens Uni which is in Northern Ireland. It seems to be standard that in the UK it only takes 3 years on %90 of BEng courses? Funny! I recon if I can be sure on the type of engineering and study hard with my maths and physics I could save myself an extra year. Although, You guys have on average 3 subjects...we as Rep. of Ireland has 6 in less detail? Which means my Physics course is less detailed then the A-levels one... perhaps this would be the reason?

Four years is standard for a Bachelor's in Scotland as well but three years is the norm for the rest of the UK, as far as I'm aware. Having to do more subjects in less detail at school could well be the reason for the extra year, I think Scottish Highers also tend to involve more subjects than A-levels.

If you're able to meet the entry requirements for a university outside of Ireland, they'll obviously think you're capable of doing a three year course.