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I can't maths so I'm not sure if that's good or not.

I'm currently less than thrilled about my PP MPGs - coming from smaller vehicles. The TT gets about 26-28 (albeit premium fuel) and the mirage gets 32ish.

But I'm still loving the PP. I just need to realize that it can go where the other two vehicles cant.

 

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Not possible

I'm sure it is. Probably all down hills.

 

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Fuelly states that I'm averaging 19.4MPG broken down with these info:

• I rarely (see: don't) drive below the speed limit
• On the way to Big Bend National Park, through the hills of i10 and San Antonio area, I may have been going 85-90mph
• Best Fuelly log was during the stay at BBNP where I actually did observe 45ish mph speed limits. Also some crawling speeds during offroad activities

The above average MPG is likely the exception and not the rule. As time goes on and I take the PP to/from work, my MPG will likely be better since I drive with mom and usually do 70ish mph.

 

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No it would be impossible even with 2WD. The AWD Passport switch to 2WD at higher speeds anyway. I can see maybe 1-2MPG better at most with 2WD but you can’t change aerodynamics with just 2WD.

There's still AWD drivetrain loss + weight. I believe most manufacturers show 2mpg+ difference between AWD and 2WD.

 

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It's really hard to get accurate without knowing the temperature of the fuel. That being said, Hondas computer is close to dead balls on. I have checked it against a calculator, using the same pump and about the same time/temperature. I'm within .08 - .3 mpg consistently compared to onboard computer. That's plenty close.

Respectfully disagree. My hand calculations differ least 1-2mpg from trip computer.

 

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I drove the PP to work all of last week - which is rare. I would say something like 55% fwy and the rest city. FWY driving is between 65 and 75mph. There may be an occasional person who drives 60 on the single-lane HOV. I would say about half of city driving is 30-40 and the other half 45-55ish. My freeway area does have a lot of bridges so rise/dip/hilly is pretty normal.

358 miles @ 19.8mpg according to fuelly. ECO mode was disabled during this tank of gas. IIRC, revs were always kept under 4k RPM and low-gear shifts were around 3k rpm and the rest shifting less than that.

I'm going to have ECO mode enabled next time I drive her for a week to work. Hopefully not anytime soon as the $55 needed to fill her up made me tear.