According to figures from the Society of the Irish Motor Industry (SIMI), Volkswagen claimed 12.64 per cent market share for the 131 plate with 6,730 units, ahead of Toyota in second place and Ford in third place.
The Volkswagen Golf was also the top-selling model of the 131 plate, with 2,623 units or 4.93% market share, ahead of the Nissan Qashqai and Ford Focus.
Volkswagen Ireland Head of Marketing, Paul O'Sullivan, said: "We are delighted with the results for the 131 plate and we would like to thank our customers for helping us maintain our number one position.
"For the first time ever, we now move on to a new 'year' with the 132 plate.
"Hopefully we can achieve similar success again with our strong product line-up and finance offers.
"Plus, with new variants of the Golf such as the GTI and GTD just hitting forecourts, we are quietly confident of a good 132."