gallico916

Keep reading people are getting 39-40 MPG
I have a 2024 NX with around 8000 miles.
Constantly getting around 33-34 miles per gallon, 65% highway, and 35% city use. ( average highway speed is 75-80mph)
Using 87 gas ( trying to use Top Tier when available )

Am I missing something?

AM123

The primary factor affecting your fuel efficiency is speed; hybrids tend to be less efficient at higher speeds, especially on highways. Additionally, cold weather significantly reduces efficiency. Your driving habits also play a crucial role; maintaining slow and steady acceleration is essential. While hypermiling techniques can be beneficial, they may not be practical for frequent freeway driving. Using 91 octane premium fuel can enhance performance, but its impact on fuel economy may be limited. I hope this clarifies your situation.

gallico916

I don't have a lead foot, but since most of the driving is on the highway and at high speed. And I know most vendors, do testing at 55Mph

chuckNX

One factor is where you live. Here in San Diego you can't really drive anywhere without encountering large hills. This has typically affected the published MPG by minus 10% for any vehicle I have owned. I suspect a lot of folks claiming higher, near rated MPG, are in areas that are typically much flatter for most of their driving or they have hybrids and drive mostly in the local city and not much freeway.

Naito

the 65% highway @ 80mph is what kills it.

in town during the week I can average just above 4.5L/100km (about 55mpg), driving in eco mode and just accelerating slowly whenever I can do it wthout pissing off drivers behind me.
weekends I'm mostly on highways, and that drops me down to about 6.5-7L/100km (about 34mpg) if I got about 110km/h-115km/h. Going to 120km/h (75mph) drops my mileage down to about 8l/100km for the same trip (about 30mpg).

So if you're averaging 65% highway, that makes sense with what you're seeing. Hybrids are best in stop/go/city traffic, on highways you're still gonna need the gas engine and while it's efficient, it's kinda running against the laws of physics between the weight and drag of the car.

You MIGHT be able to get better numbers doing hypermiler techniques like pulse and glide......I have tried doing it myself before, and I can see the trip mileage numbers drop noticeably when doing it. But it's annoying both to do, and to drivers behind you. Not really worth it unless I'm bored out of my mind and don't have any passengers (unless you want a lot of carsick people in the back)
so I've taken to driving much slower than I used to as the primary way to save gas on the highway, because I like seeing that economy number. Getting to places 5-10mins slower is worth the gas savings.