Is your vehicle fitted with AC? What is the extreme ambient temperature in the summer months for your area?
I can only speak of my actual knowledge which reflects US built vehicles. On all the 124's I have ever worked on over time I cannot recall any of them not having "Auxiliary Fans."
Most, if not all, 124's were fitted with AC for sale in the US. The US also has extreme differentials with "Ambient Temperatures" across the country. Being fitted with AC plus having a wide range of temperature changes Auxiliary Fans are common, here.