First, don't trust that on board computer. You'll have to do the tried and true method of miles traveled divided by gallons of fuel used. This will give you a true depiction of your MPG.

That being said, it's all about how you drive. It's hard to get good mpg readings and super easy to get low readings.

Are you the only one who drives it? you may baby it, but someone else probably drives it without the fuel economy in mind.

Do you start it up and let it warm up/defrost windows? That's not going to help your fuel econ at all.

When you do get going are you in the city or straight to a and b roads? What speeds do you maintain? These things take a while to warm up when just idled around, mine ran for nearly 20 minutes as i traveled a few miles, and the coolant temp never went above 170F. Not being up to temps reduces efficiency, once i was moving at a steady pace with the motor under load, then the temp rose to the 186-188F.

Check those tires for the stock size. Larger tires reduce fuel econ, but they also change rate at which your speedometer/odometer are working. It will show less miles traveled, thus reducing that fuel economy. Also make sure they are properly inflated. You can also have your alignment checked, tires scrubbing will reduce fuel economy.

How many miles are on it? Have you checked the engine air filter?

So many things can effect fuel economy. I will say I've managed an honest 21mpg on mine (all highway, warm car which never cooled down/never turned off, cruise at 70-74mph), but usually average around 17-18 with mixed b-road and city driving.

I am currently running Nokian Hakka R2 SUV 265-70-17 (stock size) and noticed 2-3 mpg drop. Winter blend fuel, colder temperatures and winter tires are contributing to lower MPG in my case.

I am not seeing much drop in the MPG with Michelin xi3 on our other cars. I should have gotten xi2 for my T4R instead of Hakka.

Thanks for the advice!

I use the Gas Cubby app to track mpg, fuel costs, maintenance, repairs etc on all my vehicles, and it gave me the initial read out of 16.5 mpg for my highway trip. I let it do the math for me, but I double-checked the entries. On the highway trip in question, I was the only driver, although we bought it as a family vehicle and my wife's daily driver. I did end up idling some on that trip and dealt with some highway speed up and slow down Thanksgiving traffic, but nothing excessive or stop and go. On a regular basis it will mostly come out of garage and onto city side streets at 30-40 mph, no idling to warm up.

I'll check the tires, pressure, and air filter tonight. It's got 70k miles on it.

Here is what I have found with mine

Stock vehicle. average milage was 11.2L/100km

Bilstein 5100 level + BFG KO2 275/70/17: 13.2

I was fine with the increase, and assuming that the lift and extra wheel weight caused the decrease in fuel economy, It was a small price to pay for a bit of vanity.

I then changed the spark plugs during my last service, and the mileage dropped to 11.8L/100km. A noticeable improvement.

Also, on my last big road trip down through the states, I noticed my fuel economy in California was significantly worse than anywhere else. 14L/100km compared to 13L/100km in Arizona. Then back to 12-13L/100km in Oregon/Washington.

I've always averaged around 13-15mpg and this is mostly cityish driving. The gas mileage and no longer a V8 option have been my only gripes with the 2014 4Runner.

I've owned my 2006 gen4 for almost 11 years and bought it new. For the first 90K miles or so I would easily achieve 400 miles on a full tank of gas. Sometimes up to 420 miles. Then I noticed a small decrease in the total miles on a full tank so I changed the plugs. The plugs did help the mileage for whatever reason. Then I added the daystar lift and slightly larger Cooper tires and the mileage dropped down to 360-380 on a full tank. It's been around that mark for 3 years now. So expect some changes if you have a lift or plan on putting larger tires.

My 4Runner has always gotten terrible gas mileage. Even when bone stock and babied with 4 miles off the lot.

I did recently up my psi from 32 to 40 and saw an increase of about 1-1.5mpg.

I run BFG ko2's

I've got a '16 t4r tp. It's only got 200 miles on it but I'm only getting in the 15's for my mpg. Is this normal? Everything else I've read about new t4r it should be several higher. Any ideas?!

The lay of the land really has a huge impact on the 4Runner. My commute to work is 6 miles of perfectly flat road and I can get 19mpg regularly. If I hit highway I'll average about 21.5mpg. As soon as I throw stop and go traffic or hilly areas (or both in Pittsburgh lol) I'll drop down in the 15-16 range.

hello everyone, im new to the forum. Im having an issue with the MPG on my 5th gen 2014 4runner limited brand new with only 14,000 miles on it. when my parents first purchased it it was giving us the average Mpg stated, but now if i do use the dash MPG display it has gone significantly down. it went from 19 mpg down to 11, as it states, and its been going down since, and i have noticed that my gas doesnt last as log as it used to. i live in chicago, i use BP midgrade to the best grade gas. im upset that its giving me really bad gas mileage. if anyone can help me with this issue i would greatly appreciate it, i feel this forum is the best place for me to ask this question. Can anyone help me with this issue? i would very much appreciate it. Its also completely stock btw

1) You alluded to it being driven by your parents prior to you being the primary driver. You're comparing apples and oranges. Rarely do younger people (yes, I'm making that inference) drive in the same manner as their parents. It's likely that they either took trips with more highway time than you, or drove in a much less enthusiastic manner.

2) Like me, you live in a major city. I'm assuming much of your daily drives are heavily stop and go (stop signs, poorly timed traffic lights). That has a huge impact on fuel efficiency as you're constantly stopping the momentum you've generated.


Tips:
1) Don't take fuel economy comparisons with other people as the gospel. Everybody's situation is a bit different.

2) Accelerate more slowly. The longer the Eco light stays on while accelerating, the (generally) better your efficiency will be. It's just an indicator based on throttle position/load (so it seems), but still useful for learning how the T4R operates.

3) Stop using midgrade or high grade fuel unless you have a scientifically backed reason to do so. You're throwing your money to the wind. The T4R is designed to operate on 87 octane.


For a general comparison (again, do not read too much into this), I've gotten as low as 12 MPG (driving like an idiot) and as high as 25 (back when it was stock and I drove 50 MPH for a few hundred miles without hitting a single stopping point)


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"5th Generation Poor Fuel Efficiency Causes?"


The #1 cause is driving it.

The Tundra only gets 11-13 MPG so anything over 16 MPG would be great.

i dont drive very fast at all. only highway speeds on the highway, my mother drives it and i drive it and we have both seen the gas mileage go down significantly. well im honestly comparing my full mileage to what toyota sold me on what was the average MPG for city and highway. its throttle also lacks power for some reason on the highways. my trips are usually tops 15 minute drives. so for me to lose almost a quarter tank just driving for that little is what has made me upset.

Winter fuel mix might have an impact vs non-winter fuel mix

Short drives like 15 min are terrible for mpg

Slow down

Check tire pressure

Slow down

Replace air filter if needed

Slow down

Maybe add some fuel system cleaner (Chevron, Redline for example)

Slow down