Issues with the supply of new cars could mean Ireland's national fleet will continue to age.
The Society of the Irish Motor Industry says it's because car dealers are struggling to import new vehicles from abroad.
However, some dealerships think it's because cars have become more reliable, and are lasting longer.
According to the Society of the Irish Motor Industry, last month new car registrations were down over 17%.
So what has caused this surge in the second-hand market?
Brian Cooke, Director General of SIMI explains:
"So Ireland is quite an expensive place for cars for both businesses and consumers.
"We're only 1.5% of the overall European car market.
"We've had Brexit so in some cases increased logistical customs issues. It's more expensive to get cars into Ireland."
So will we see a lull in prices anytime soon?
Dave Humphreys from Complete Car dot ie thinks it’s possible if people bide their time.
"If there is a drop in sales and people go 'actually I'm going to wait - I'm not going to buy yet.'
"That will help to bring down the cost because the market will have to react and have to change."
Reporting by Aoife Kearns