Atmosferikui turėtų nebūti jokio.

Aš norėjau paklausti apie kainos skirtumą tarp 95 ir 98 Bet jau pats sužinojau, dabar 0,05eu skirtumas. 

Jeigu kalbama apie nemodifikuotus variklius tai nebus jokio skirtumo, pvz mano 4.2 FSI variklio rezultatas 0-100 tikrai ne taps geresnis.


If a higher octane fuel is used what happens? Well, nothing. The engine is already able to perform at its highest efficiency on the recommended fuel. The extra octane rating has no effect.

O jeigu kalbama apie modifikuota motorą nu tai čia jau kita istorija:

So why do high performance cars or racing cars use high octane fuels?

This is because their engines are designed to take advantage of the properties of high octane fuels. High-performance road cars tend to make their extra power from generating higher pressures in the combustion chambers of the engine, either by having high compression ratios or by using turbo or superchargers.


Source: https://www.motoring.com.au/myth-busting-high-octane-fuel-will-make-a-car-faster-7513/

Time and again, people will be told that high octane fuel burns cleaner or more completely, and that it will give them extra power and better fuel mileage than Regular octane gasoline because it contains more ‘energy.’ These blanket statements are simply not true. In fact, the octane rating for gasoline has nothing to do with the amount of power locked inside of it – it actually relates to just how much a fuel can be compressed before igniting. The higher the number, the less likely it is to ignite under pressure.
 
Source: http://www.nicoclub.com/archives/gasoline-octane-myths.html