The Competition and Consumer Protection Commission has cleared the way for Maxol to buy three service stations, which had been owned by Esso.
These three premises will see the company grow to 230 service stations across the country, with seven new sites in Leinster alone this year, as part of a significant expansion plan.
The service stations are at the Naas Road in Kill, Co Kildare; Greenhills Road in Greenhills, Dublin 12 and the junction of the Naas Road and the Long Mile Road in Walkinstown, Dublin 12.
The Maxol Group had an annual turnover of €640m in 2015 and the company employs over than 1,000 people across the island of Ireland both directly and indirectly.
The company opened a new outlet in Dundalk in October last year as well as its largest station to date in North Dublin near Mulhuddart in April. More recently it opened a new servive station in Donabate in Co Dublin.
It has also started construction on another 2 acre site in Ballycoolin in Dublin, which will be completed by the end of the year.
