Hello from UK, I hope everyone is well. I recently purchased 2022 35 TFSI part exchanging my 2009 1.8 Astra and the fuel flap on A3 label says E5 E10 min. RON/ROZ 95 Super, Premium. 

I was wondering which type is your go to and which brands?
 

 

Any fuel will be fine. But they do say that supermarket fuel isn't as good. 

Choose any fuel you like that meets the RON95 specification. They all come from the same few refineries, even supermarket fuel.

1 hour ago, cliffcoggin said:

Choose any fuel you like that meets the RON95 specification. They all come from the same few refineries, even supermarket fuel.

Will there be any benefits with Tescos premium or Shell v power? 

Jumping in Rabin. No point in over thinking this. The benefits of using ‘super’ petrol are debatable for bread and butter cars. 
For what it’s worth, our 176k miles A3 has consumed supermarket fuel until about 10 years ago when its annual mileage was higher then normal. Over the last 10 years it’s generally run on Texaco ordinary, simply because it’s only 1p/litre dearer than Tesco 200 yds down the road - and I admit to be mistakenly brand conscious!

Regards,

Gareth. 

The supermarkets buy their petrol from which ever oil company currently offers it at the best price, so for example Tesco petrol may be rebranded BP this month, rebranded Shell next month, rebranded Esso the next, and so on.

Thank you guys, your comments were very informative. I will stick to filling with normal unleaded and maybe once in a while with V-Power. 

The main differences in the fuel between normal and super are

Super is higher octane generally 97-99 as opposed to 95. Wasted if your car isn't tuned for it.

Super is E5. Normal is E10. People have reported worse fuel consumption with E10. Personally I always used E5 in our petrol car but it wasn't high mileage so the cost penalty wasn't great.

The brands appear to have superior additives in their E10 and even more in their E5 super. Cleaner fuel lines and injectors etc.

Price!!!!

Loads of threads on this with no conclusions and lots of arguments. The only benefit for your car would be the cleaning benefits.

In my diesel I used branded or supermarket diesel with a dose of Millers with occasional tanks of BP ultimate.

Always use E10 in mine and so 97 or 99 Octane. E5 is hygroscopic so if left in the tank for long periods can cause rust in the tank and has a slightly lower calorific value than E10. As said previously cleaning agents in fuel can be beneficial even if premium fuel is only used occasionally.

12 minutes ago, joe6 said:

 E5 is hygroscopic so if left in the tank for long periods can cause rust in the tank and has a slightly lower calorific value than E10. 

I suspect you have that reversed. E10 has more of the water miscible alcohol than E5 (10% vs 5%), and hence also a lower calorific value.

OOps! Yes my mistake

Incidently most fuel tanks are plastic nowadays so rust is not a consideration.

But consequent water absorbing is. 

45 minutes ago, Magnet said:

But consequent water absorbing is. 

My only experience of alcoholic petrol (E10) is in a low mileage Yeti, so the fuel stays in the tank a long time with plenty of opportunity to absorb moisture, yet it has never caused a problem.

Problem with all this is (apart from octane benefit in tuned engines) there is lack of evidence obtained in a controlled environment and all of the supposed benefits are long term. So apart from having two identical  engines run for 100k miles in similar circumstances on the different fuels and then dismantling them, it's all guesswork. Is it marketing hype for more profit or real benefit?

Those who buy on 3 year PCP then change car won't see any benefit. If your injectors block after 100k miles you still won't know it they've been affected by the fuel.

Hence there is always disagreement on the benefits.