I drive a 2015 iGT HB for a daily and it's working out for my commute. A bit boring at times due to having an automatic tranny but when you need someone else to drive the car back home for the bar, there's no worries about the DD not being able to drive stick. I've been getting good MPG on my 40min commute to work but for a couple of weeks now I have experienced my car struggling up hills forcing downshifts and resulting in an annoying jolt. So 2 days ago I started to put premium gas in my car. With extra octane the car feels a bit more powerful coming off the line, no struggles going up hill, and accelerate much quicker. I just filled up my tank and now I can not go back to regular gas. Due to the gas prices being low, its not much of an issue with a price difference of $5 but I can see it being an issues if gas prices were to go back up to justify the purchase. Has anyone gone through the same issues?