Servicing car at 15k interval?

[Westender]

Why does cars like vw and a few other brands has 15k/20k servicing intervals, whereas for jap/kor cars service interval are at 10k?

Do they use diffrent syn oil or their engines are better build?

 

[Blue850r]

European cars are designed with very strict emission control. So less contamination to the oil as fuel is burnt. This is one factor.

 

Another factor is European car have a larger oil sump (above 5L of oil) than Japanese counterparts (3.5L of oil). So the lifespan is extended.