Unleaded vs Super unleaded

[dereks]

I'm sure I feel a difference  seems to run slightly smoother/quieter.

[RobS23GTI]

There has never been a consensus on this, and the differing opinions on here show that.
I've always seen more mpg from super unleaded. Over 10k miles  (all recorded in a fuel app), I've consistently gotten 30+ miles more per tank on Tesco99 over standard fuel. That's around 10% more and the fuel is 5p more expensive which is less than 5%, so it's worthwhile for me. As for responsiveness that is more subjective and can't really prove unless dyno'd.

[matchboy]

I tried 99 in my GTI and didn't notice any real difference in power nor consumption.  However, when I've been forced to use 95 in my R I notice its worse on both counts.  Therefore I only use 99 now 

[Organisys]

"Dyno Runs"

We all know how accurate they are !

True, some are better at operating them than others...

The video itself doesn't show any 'surprise' results but you'll often read 'yeh yeh the published figures must be under quoted' .

Any potential differences in results due to changing the fuel are negated by the lack of accuracy of the results from the dyno.

[Booth11]

I've run my last 2 gti's on predominantly on Super (usually Shell V Power Nitro+) and will be running the R on it (which it is optimised to).  No real discernable difference in power or improved mpg, but always been as smooth as you like.     

The debate will go on...

[Jimmgc51]

Save the cash. This is from my GTI manual:

This reads very generic to me and not specific to the GTI unless Iv'e missed something. It fails to mention WHAT the GTI needs! It just says if you run extra RON you will have no benefit dependant on the engine . i.e. this could be in a 1.4 golf (no benefit) or a GTI manual possible benefit

Under my fuel cap it says 95 minimum, as someone has mentioned the ECU knows what's running through thus put 99 in and the ECU adjusts giving a little more performance but it will run on whatever.

[monkeyhanger]

To me it reads as if to say "fill with whatever it says on your fuel cap", but don't fill with less than that (in some countries, petrol with a RON as low as 87 can be found at the pumps).

[Finglonga]

This reads very generic to me and not specific to the GTI unless Iv'e missed something. It fails to mention WHAT the GTI needs! It just says if you run extra RON you will have no benefit dependant on the engine . i.e. this could be in a 1.4 golf (no benefit) or a GTI manual possible benefit

It read generic because all Golfs with exception of the R are tuned to run on 95 RON. The R handbook will be different. You are literally burning money putting higher grade in.

[p3asa]

I've posted this before but it seems appropriate to do so again.

All about Octane and how some cars will never take advantage of higher RON fuels.

https://www.youtube.com/watch?v=D9nhXNarFdg

[caprigreen]

I've posted this before but it seems appropriate to do so again.

All about Octane and how some cars will never take advantage of higher RON fuels.

https://www.youtube.com/watch?v=D9nhXNarFdg

Very interesting, not seen it before. I have not been using super unleaded and now I know I am throwing money away if I do. Thanks for posting.