We've put about 1800 miles on our 2017 500X AWD so far. I've been running 87 octane and have been getting around 23-24 mpg, all suburban driving. We bought it in March, so initially I think winter gas could explain the relatively low figure. The center multi-function display (MFD) seems to be slightly optimistic in fuel economy readings (e.g. 23 mpg on MFD is likely to be about 22.6 mpg or so hand calculated).
The other day I stuck in 89 octane from a Lukoil station (never have used Lukoil gas before, but I didn't want to push it, as we were nearing empty, and this station was convenient). So now this tank is reading about 31 mpg on the MFD so far, only about 50 miles into it though. I really wasn't expecting that, and am pleasantly surprised. Usually I try to use BP (or Shell) because they're Top Tier, and I've had good FE results using their gas in our 500L. 31 mpg might make me a convert over to Lukoil, if this turns out to be repeatable.
Have any of you 500X owners tried anything other than 87 octane and achieved better FE results than what you get with 87?
The other day I stuck in 89 octane from a Lukoil station (never have used Lukoil gas before, but I didn't want to push it, as we were nearing empty, and this station was convenient). So now this tank is reading about 31 mpg on the MFD so far, only about 50 miles into it though. I really wasn't expecting that, and am pleasantly surprised. Usually I try to use BP (or Shell) because they're Top Tier, and I've had good FE results using their gas in our 500L. 31 mpg might make me a convert over to Lukoil, if this turns out to be repeatable.
Have any of you 500X owners tried anything other than 87 octane and achieved better FE results than what you get with 87?
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