Moin people, I didn’t find anything specific about it in the forum, so I ask myself. I’ve been driving my beloved Ibiza 6l with 1.2 engine and 12 valves for 3 months now. I didn’t notice anything negative about it until now, except that the engine runs under 2k tours very unevenly, it almost seems to choke off. I guess it’s because the only 3 cylinders has and I didn’t think anything about it. A friend on my part, but drives the same engine in a polo and he told me that it’s not like that with him then I got a little skeptical. Then I got spark plugs out and a little “clean” sand paper. I also looked at the throttle flap and the air filter but everything was fine, nothing eye-catching. I also talked with a mechanic colleague and he said I should fill up 102 octane and then board the highway, probably because I would treat my car too well, the engine had to be “entrosted”. I didn’t want to hear about it.