My Superb 1.4tsi runs better on higher octane petrol and if you are driving on a summers day with the windows down you can hear distant sound of pinking when going uphill and using 95 RON
As regulars will know we bought our first 1.4 TSi 140 PS in June 2013, almost 10 years ago, it was a Seat Leon. That was replaced in March 2017 by a Skoda Superb with the 1.4 TSi 150 PS and now we have a Superb PHEV bought in October 2020 which is also fitted with the 1.4 TSi engine.
In those 10 years I have never heard any pinking and I have only used 95 RON petrol since inside the filler cap on all the cars it said:
Unleaded petrol min. 95 RON / ROZ
In the manual it clearly states that for cars with that inside the fuel filler:
Use min.95 RON petrol.
In an emergency petrol 91, 92 or 93 RON can be used (slight loss, a slightly increased fuel consumption)
No mention of using super unleaded at all other than saying:
Unleaded petrol that has a higher octane number than that required by the engine can be used without limitations.
Since all modern cars are fitted with knock sensors the engine management should stop pinking occurring. If yours is pinking there is clearly a fault. It needs going to a garage to be sorted.
Last car I had that pinked under certain conditions such as after a long motorway drive was a 1985 Golf and that had a clockwork distributor and used leaded petrol. All that required was the distributor sorting.
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