For those experiencing throttle lag or lack of power, I would advise you to change to Shell 97 or BHP 97. I have almost 30,000km on this car and I can tell you this car is quite picky on the type of fuel you feed it. I am now permanently on Shell 97 and lag for me is minimal, and on colder days(at night) zero lag, press throttle car straight away fly.

Don't bother with the other 97s aside from these two brands, I have tested them multiple tanks over many refuels. If you have to go 95, only BHP 95 is decent. So if your engine is roaring loud but no power, it's most likely your fuel. Crap fuel pulls timing from your engine making it drive like a lorry. If you have the budget I highly recommend going 97 for this car.

Petron 97 for me was so-so. Fuel saving better then Shell 97 but power is not there.

Don't take my word for it, go try yourself . Wait till your tank almost empty(1 or 2 bar) before putting in different fuel.

Did they explain any further about the "fake" ron97? I do have a feeling our gas stations are cheating on us sometimes. On some occasion, after a full tank refuel the car drives like shit and will stay that way until I have used about 50% of it or until the next refuel.