What fuel is recommended?

[StuF]

Mine runs on standard unleaded and has done for very nearly 170,000 miles without any issues
Although it is unmapped it still pulls hard and fast

There's a good 10bhp in it with 99RON vs 95RON (Dyno proven). Worth giving the good stuff a go 

I noticed much more top end power on my stock k03 GTI which I switched to 99RON

10BBHP - blimey I will give it a go next time I am at the pumps, will run the tank to empty and brim it with 99
Should notice the difference I suppose 

[JimGTI]

Only ever used Momentum in mine. Swings & roundabouts with V Power or Momentum, you'll get people singing praises and swearing by both. Either over standard stuff.

[Wash]

Been running on 95RON as of recent as I'm doing a lot of mway driving so don't really care for performance. Otherwise I was always using momentum as it's quite a lot cheaper than vpower and to me feels the same.

[mrw]

I've been a long time user of the 'performance' fuels and think they are worth the extra if you have a performance car.

I think it also depends on what your car has been mapped for too - don't the Golf GTI's have a little label with 98 RON or something inside the filler cap? I had a Clio Sport 197 (with a label on the inside of the filler asking for 97 RON) before my current GTI and a few owners reported worse MPG on standard RON, enough to justify using super or better!

Even my mums diesel festa sounds smooth on v-power