One may (or may not) be able to purchase and operate European specification models in Africa, but I would be surprised if the maintenance schedule and service intervals in Africa would be identical to that of the LongLife regime, as practiced in certain European countries.
I do not believe the surface quality of sealed roads would be a significant factor in determining a vehicle's oil change interval per se, but a reduced service interval may sometimes reflect the level of infrastructure (for instance, the availability of sulfur free fuel) in that particular country.
Driving at high engine speeds, near top speed or frequent full throttle acceleration aside, steady state driving on a highway or main road is an operating condition that is more conducive to extended service intervals.
Urban driving would be considered one of the factors which reduce a vehicle's service interval.
Australia has one of the highest urbanisation rates in the world. At just under 90%, it is higher than nearly all EU member states, with only Belgium and Malta having a higher rate. Germany has an urbanisation rate of just 74%.
I do not think vehicle wear or damage caused by negligent driving or negligent maintenance practices would have a significant effect on the manufacturer determining the service interval for a particular market.
That is correct, but what you are mostly describing is the manufacturer determining a vehicle's limit of capability or operation.
Determining which operating conditions require what maintenance schedule is different.
I imagine a vehicle operating in extreme conditions may have a service interval of x km, but that same vehicle operating in severe conditions may have a service interval of 1.5x km. That same vehicle again operating in normal conditions may then have a service interval of 2.0x km. If operating under ideal conditions, then it might even be 2.5x km. Under laboratory conditions, it could be 3.0x km. Whatever.
At the end of the day, the vehicle manufacturer will need to compromise and specify a service interval based on their data that will serve the needs of most motorists. As such, Volkswagen have determined that a fixed 15 000 km / 12 month service intervals are the go for our market.
Out of interest, service intervals in the U.S.A. and Canada are also set at 10 000 mi. / 12 months.
The research octane number (RON) is a measure that is accepted worldwide. In this regard, the Australian fuel standard for premium unleaded petrol (i.e. no less than 95 RON) meets the same requirements as the European fuel standard for unleaded gasoline (also, no less than 95 RON). There is no issue here.
However, the European standard for automotive gasoline and diesel requires fuel to be "sulfur free", which the industry defines as less than 10 ppm.
The Australian standard for diesel meets that requirement, but the Australian standard for petrol does not.
Regular unleaded petrol (no less than 91 RON) may contain up to 150 ppm. Premium unleaded petrol (no less than 95 RON) may contain up to 50 ppm. It is my opinion that this is one of just many, many, many factors which places a limit on how far service intervals may be extended beyond 15 000 km for Volkswagen vehicles in such markets.
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