[MI-Toyotas]

Well, so much for using logic to develop an answer. I posed the question to Bard (Google's AI interface - Bard (google.com) ) and got this:

MPG (miles per gallon) came first.

The term "MPG" was first coined in the late 19th century, when the automobile was still in its early stages of development. At the time, the United States was still using the imperial system of measurement, so MPG was a natural way to measure fuel efficiency.

KM/L (kilometers per liter) was introduced later, in the mid-20th century, after the metric system had become more widely adopted. KM/L is now the standard unit of measurement for fuel efficiency in most countries around the world, with the exception of the United States and the United Kingdom.

So, to answer your question, MPG came first. However, KM/L is now the more widely used unit of measurement for fuel efficiency.

 

[Sporan]

Hi! How much km per 100km am I supposed to get with my 2021 Highlander platinum.

Is it a V6 or hybrid? FWD or AWD? Best to put that info in your signature, like I did below.

 

[texastrucker58]

I have a 2020 xle awd with a 6cyl 3.5 and my “average” mpg has been 25.9. Smooth driving, lots of coasting to red lights ahead, and check air pressure no less than once a month. I’m not sure how that translates to km, I don’t math in kilometers.

 

[tr0n]

Hi! How much km per 100km am I supposed to get with my 2021 Highlander platinum. What are some tips on getting the best gas mileage?
I mainly drive my SUV 8.3-8.5 km one way, and then back.

You can get a good sense of the average mileage by looking at Fuelly's large set of Highlanders. You can change the units to L/KM in the top left hand corner using the Units toggle.

 

[Nzott]

If it’s a V6 then in stop start city driving with a light foot 13L/100km or worse depending on load and weather.
Can be as bad as 15L/100km on short trips in cold weather.
A highway cruise With a light foot keeping under 120kph then 9L/100km or less.

 

[Thomcat]

My '20 V6 AWD gets 21 mpg......same driving the '23 I4 AWD hybrid gets 37 mpg in fair weather.

 

[98CamryLE]

Hi! How much km per 100km am I supposed to get with my 2021 Highlander platinum. What are some tips on getting the best gas mileage?
I mainly drive my SUV 8.3-8.5 km one way, and then back.

The Highlander is a big, heavy SUV- and its mpg / kpg reflects that.

Ultimately- there are some things that will drastically impact your fuel efficiency- some of which is within your control, some of which is outside of your control:

Outside of your control:
Weather / outside temperature. Extreme heat (requiring heavy a/c use) or extreme cold (requiring heavy heater use) will significantly impact fuel economy. The hotter/colder it is- the worse your fuel efficiency is. In addition, colder temperatures will require the engine to take longer to 'warm up', which will impact efficiency.

City vs highway use- and your highway speed. You'll generally get better fuel efficiency at a steady 55mph/90kph on the highway than you will going 75mph/120kph. If you drive a lot in the city- then your fuel efficiency will be lower still.

Within your control:
Tire choice. If you have grippy tires, your fuel efficiency will be worse than if you have tires that are designed for efficiency- at the expense of traction/grip.

HVAC settings: while you can't control the outside weather, you can control your car's HVAC settings. Blasting the a/c or heat will lower your fuel efficiency. Using less a/c or heat will improve efficiency.

Throttle response: If you drive your car like a race car from stoplight to stoplight- your fuel efficiency will be lower than if you accelerate moderately and coast gently to a stop.

Use of auto start/stop in the city: If you turn off the start-stop system and do a significant amount of driving in areas where you are sitting idle for a while at traffic lights or train crossings- disabling the start-stop system will lower mpg.

Combining trips: Lots of short trips will lower fuel efficiency. Combining these trips- so that the engine doesn't have to continually warm up between trips- will improve fuel efficiency.

Weight: While this is somewhat less important in a 4500lb SUV, weight can impact fuel efficiency. If you have 200lbs of sidewalk salt in the back of your Highlander- and you leave it there for a few weeks- that's like having another full-size adult sitting in your car the entire time- and fuel economy will suffer.

 

[Trapshooter]

Hi,

Thanks for the response.

I think most would want an accurate fuel reading versus being off 15-20%.

600 miles is based on the advertised average MPG and the size of the fuel tank. Mine read 420 when I picked up the car and just filled up the tank and it now says 420. I am getting just under 28 MPG on a vehicle advertised to get 34-35. That‘s a difference of over 20% which is a lot!

I can appreciate the car not performing to the average in extremely cold weather but would expect the car to get 30-32 MPG seeing it is advertised average is 34-35.

Break in? These vehicles are highly computerized so am surprised they need break in as the cars did in the 60’s and 70’s.

Right now mine is getting 36.8 mpg. The total mileage is based on your driving patterns. Yours may be different than mine

 

[Kraky1]

Fyi...you CANNOT judge your mileage based on a single tank fill up because the tank is impossible to fill consistently. I kept track of miles over 100 gallons worth of fillups and found my computer was one MPG optimistic.
With OEM tires it was easy to knock off 40 to 41 MPG on the computer over the summer in rural Wisconsin driving in Town and County highways at about 55 miles an hour.
Crazy thing is my OEM goodyears wore out at 32,000 miles and I replaced with top of the line Goodyear assurance tires. These tires have a pretty gnarly looking lugPattern and should be awesome for winter time but holy macro my mileage dropped 4 MPG!

 

[dknightd]

Tires make a difference. Did you really average 40 MPG for 32,000 miles? Or just for the 100 gallons. I agree, the computer is pretty accurate. If it comes down to a decision between MPG and traction. I'll probably choose traction.

 

[donkraky]

Yup.... I think it was over 8,000 miles I think I have a picture in my gallery. I think I pick up some pretty good mileage just driving around our small town from time to time I don't mind taking a 20 or 30 minute slow and easy cruise around town and often at the end of those little therapy trips I'm in the high 40s or even 50 MPGs. It really is amazing for a vehicle that comfortable quiet and roomy. And yes these tires will last twice as long as the original so I'll be money ahead even at 4 MPG less😁.

 

[gdtrfb]

Yes. In the right conditions HiHy will get amazing fuel economy for a 4600# AWD vehicle. I'm at 43.7 mpg (calculated), 44.3 mpg (displayed) over 10k miles. But my conditions are perfect to be able to realize this type of fuel economy. Mostly driving to and from town at 45-50 mph on a county road & around town at 35-40 mph. Warm climate most of the time, almost no freeway driving and a light foot.

 

[Ultimateasus]

My car is getting better over time and the DTE keeps increasing, maybe because my driving habits changed also, for about 6000 km my average is 17.7 km/L (41-42 mpg), and the DTE in full is showing 983 km (which is for about 55 L, meaning it can go for about 1160 km or 720 miles in the full 65 L).

 

[dknightd]

I'm happy with mid thirty's.

 

[Penzfan]

Happy with my 2019 non-hybrid 34 mpg too

 

[Alrightletsgo21]

wonder if i can hook up to my raav4 2010 a computer for this info, this is great stuff to know

 

[kono2380]

I see the same behavior. The first 100 - 125 miles stay on full.

Also, the range I have got for most of my tanks is 480 miles. I agree that I should be able to go further than that though. Simple 36 mpg X 17 gal is 612 miles. I think the car is projecting a lower number for some reason.

Someone needs to test the “E” in this SUV for us


Sent from my iPhone using Tapatalk

I have a 2023 highlander hybrid limited with 13000 miles. I figured the same as you. 36 mpg x 17 gal is 612. I went 428 miles then the low fuel light came on. I filled up and when the pump clicked off I put another half a gallon in, which totaled 14.4 gal. I read in the manual my 2023 highlander limited has a 17 gal fuel tank. As you can see 14.4 divided into 428 =29.7 MPG. I don't care what the computer says, which was around 32 MPG, I just don't believe the computer screen. Now I had about 2 gallons and 6 tenths still in my tank when the low fuel light came on. Also I'm in Washington state and its been cold this month (January) and the next tank was 25MPG, I'm not happy but I did run the heater full blast and the heated steering wheel full blast and the seat warmer only on the drivers side. I figure id at least get close to 30 .

 

[Vino PNW]

wonder if i can hook up to my raav4 2010 a computer for this info, this is great stuff to know

I have used an Excel spreadsheet to track mileage in my previous car, giving me a 1 tank and 3 tank average. Kept it up for 10 years. Then just switched to Fuelly when I got the Highlander. You just enter your odometer and gallons for every fill-up

 

[Felsenl]

I have a 2021 Highlander Platinum Hybrid from the beginning I’ve had lower than expected MPG. 33 is what was claimed. Never did get that highway or city 30 is the best. I have 40K mikes now I only get 26-28 MPG. Should be better. Is anyone else experiencing this issue ? What are you all getting ? I always use good gas no cut rate stuff. Maybe I should go that route if it’s not working anyway. I hope to hear back from someone.
Thanks

I was getting 600 mikes to a tank but after 2 1/2 years only getting in the 400s.
Why?

 

[Penzfan]

I have a 2023 highlander hybrid limited with 13000 miles. I figured the same as you. 36 mpg x 17 gal is 612. I went 428 miles then the low fuel light came on. I filled up and when the pump clicked off I put another half a gallon in, which totaled 14.4 gal. I read in the manual my 2023 highlander limited has a 17 gal fuel tank. As you can see 14.4 divided into 428 =29.7 MPG. I don't care what the computer says, which was around 32 MPG, I just don't believe the computer screen. Now I had about 2 gallons and 6 tenths still in my tank when the low fuel light came on. Also I'm in Washington state and its been cold this month (January) and the next tank was 25MPG, I'm not happy but I did run the heater full blast and the heated steering wheel full blast and the seat warmer only on the drivers side. I figure id at least get close to 30 .

Wow. My non-Hybrid gets better MPG than that.