If we were talking about a performance car I would understand using 91. Now maybe Toyota is considering the LC a performance car, but I would think the general public does not. That is what Lexus is for right? Look at the competition and see that they are NOT using 91 and have 4 and 6...
So the only engine you can get in north America for the LC is the Hybrid and no 3ed seat. Europe, from my understanding only gets the Diesel but has three rows of seating. Interesting decision by Toyota but understandable due to diesel passenger car sales not doing great in the USA. I know...