Quote Originally Posted by Kwangstuhhh View Post
As for fuel consumption think about this:
Full tank of 91RON into my GD3 (1.5L) - not sure on the Fuel tank capacity: ~$45 -> 400-500km Highway and City driving -> Averaging about 7.0L/100km (Auto)
Full tank 95RON into my CU2 (2.4L) - 65L: ~$90-100 -> 800-900km Highway and City driving -> Averaging about 10.0L/100km (Auto)

So if you think about it you don't save much more with 91RON and a much less powerful engine...95RON is "better" for the engine in the long run anyways. Having said that, I've also read that 95RON also increases the fuel consumption of the car. That's my point of view of it anyways
If you drive 20,000km a year, then that is 1400L of 91RON or $1820 if the price was $1.30 per litre. In comparison, the CU2 would use 2000L of fuel for the same distance and if it was $1.45 per litre for 95RON, then it will cost $2900. So the difference in a year is $1080. For some people that is a lot of money, and for others, that is nothing compared to their ciggie cost (4 packs per week, $15 a pack = $3120).