I am now trying to decide on whether to place an order for a 2.0 TDI, 2.0 TFSI or (even) R32. Now, doing my homework carefully obviously the TDI version has much better fuel efficiency than the TFSI - BUT - both TFSI and R32 motors are stated in Australian VW specs to run on 98 RON fuel. In the UK VW state that both motors should run on 95 RON fuel, which is much more readily available here. In fact in many servos in Brisbane it's cheaper than 91 RON!

VW UK state..."Thanks to the knock control, unleaded four star (at least 95 RON can be used instead of unleaded Super plus. In order to achieve maximum fuel consumption benefits on the FSI engine, Ultra Low Sulphur Petrol (ULSP) must be used."

So why do VW insist on 98 RON here?

I am trying to work out the TCO (total cost of ownership) difference between all three engines, given the varying fuel consumption and wide price variations of diesel, PULP and 98 RON PULP. Anyone running these motors on 95 RON?