Best fuel percentage to fuel up

[Jmar]

Hello everyone. 

I have a Toyota Yaris Hybrid 2022 Dynamic. I just want to know under what percentage should I fuel up? Percentage is based on the My Toyota App. 

Thanks you all!

[FROSTYBALLS]

Topic moved to the Yaris forum.

Personal choice really. Some, including myself, feel their cars run better on E5. Some see no difference and use E10.

Whether or not what fuel one uses gives better economy is open to question and, perhaps, down to personal experience.

[Gren]

I posted in another thread that I was always advised to never let the tank go below a quarter full so that any muck and water in the tank had a lower chance of being sucked up into the fuel filter and possibly the carburettor.

If there's less fuel in the tank then also more chance of the sediment at the bottom being sloshed around while driving.

[Cyker]

I refuel around 1/4 tank remaining or around 100 miles range.

It's one reason I can't face getting an EV yet, as the point where I refuel is still more usable range than most EVs if you also include the hidden fuel reserve  

[dannyboy413]

Might be just me, but I get the impression that the original poster was asking about what the percentage of the tank contents remaining should be when filling up. ❓  I usually fill up when I have between 100 and 200 miles range shown as remaining, which is probably about 15 - 20% left.

[MikeSh]

2 hours ago, Cyker said:

I refuel around 1/4 tank remaining

Yes, that's about what I do. These gauges have a habit of falling faster in the bottom half than the top.

So I reckon if I suddenly need to go somewhere in a hurry I'll have enough to notice it's getting low and do something about it 'at leisure' rather than have it yelling at me 30 miles up the motorway.

[bathtub tom]

I just fill up when i'm empty, except in current circumstances where shipping's going round the coast of Africa to avoid the Red Sea because of the Houthis rebels, that may result in a raising of prices.

[MikeSh]

3 hours ago, bathtub tom said:

I just fill up when i'm empty

Define "empty".

In my book that means you will need a tow or a can of fuel to get to fill up.

[Mojo1010]

No one ever say when filling from empty means the car run out of fuel in the middle of the road. 

[Primus1]

I normally fill up when the gauge gets to quarter, I always try to put 25 litres in, that way I get the same amount of fuel, , regarding muck at the bottom of the tank, aren’t fuel tanks plastic nowadays., so there’s no rust, not like the metal tanks in cars in the 70,/80s, ect, still, I would never let my tank get too low, just in case..

[hind]

I do short trips and always have a possibility to refuel in a 5 mile radius so usually I just wait till the indicator shows up and refuel when there are 10-20 miles of remaining range. 

I don't expect to see any contamination in a 0-4 year car 😉 and if we take condensation into consideration, filling up to full should get rid of the air every time we refill. Driving with very low fuel level all the time is what might be dangerous. 

[anchorman]

The old “never let the tank run empty” tale might have had some credence in the 60s when tanks were poorly made steel affairs and petrol stations were equally poor at storing it but there’s no storage area for junk in our mostly plastic tanks, whatever is in it gets sucked from the bottom of a pickup pipe.  I tend to fill up at a convenient time when I’m passing high grade fuel at a good price.  When depends on whether I’m in work and passing frequently but I think nothing of starting my 24 mile journey with the low fuel light on and the scaremongering distance to empty way past zero.  It amuses me how many owners think it has one hand on a bible (meaningless to me as I’m an atheist).  I don’t really understand the question, I fill up at any time between getting a reasonable amount in at a convenient location and empty.  

[Paul john]

1 hour ago, anchorman said:

The old “never let the tank run empty” tale might have had some credence in the 60s when tanks were poorly made steel affairs and petrol stations were equally poor at storing it but there’s no storage area for junk in our mostly plastic tanks, whatever is in it gets sucked from the bottom of a pickup pipe.  I tend to fill up at a convenient time when I’m passing high grade fuel at a good price.  When depends on whether I’m in work and passing frequently but I think nothing of starting my 24 mile journey with the low fuel light on and the scaremongering distance to empty way past zero.  It amuses me how many owners think it has one hand on a bible (meaningless to me as I’m an atheist).  I don’t really understand the question, I fill up at any time between getting a reasonable amount in at a convenient location and empty.  

Running dry and getting air in the fuel pump will lead to problems starting after refuel especially diesel. It’s not just about crap in the tank. 

[anchorman]

Just now, Paul john said:

Running dry and getting air in the fuel pump will lead to problems starting after refuel especially diesel. It’s not just about crap in the tank. 

It’s not my first rodeo.  I’m a qualified diesel mechanic.   Who said anything about running out?

[Paul john]

1 minute ago, anchorman said:

It’s not my first rodeo.  I’m a qualified diesel mechanic.   Who said anything about running out?

You did. Your first line ‘“never let the tank run empty” might have had some credence in the 1960’s’ you seem to be implying that was no longer a risk as the tanks are constructed differently. 

[ISL]

Personally I have the unhealthy habit of playing chicken to see how low I can run the tank before filling up. Fortunately Toyota tell lies about how much is in the fuel tank, with the petrol gauge not moving at all for the first 100 miles, then giving you the impression at half full, you can do double the mileage you have already achieved, then eventually running to zero putting the emergency “refuel” light when in reality you still have 100 miles left.

I do remember with my old Peugeot 508 Diesel I set out with the challenge of achieving 1000 miles from 1 tank of fuel. (It did take 72 litres) I would often bottle it at something like 950 miles only to realise I probably still had around 6 litres of fuel left, enabling me to push it a little more next time.  I never ran out of fuel in the Peugeot but did run out of fuel in my 911 when the display still stated I had 20 miles left. 
😳😳😳

I guess every car is different and best guide is to fully understand fuel tank capacity compared to how much fuel you put in to equate reserve capacity against average mpg.  It’s a fun game especially with the Yaris Hybrid which is all about fuel economy.

[Mojo1010]

52 minutes ago, ISL said:

Personally I have the unhealthy habit of playing chicken to see how low I can run the tank before filling up. Fortunately Toyota tell lies about how much is in the fuel tank, with the petrol gauge not moving at all for the first 100 miles, then giving you the impression at half full, you can do double the mileage you have already achieved, then eventually running to zero putting the emergency “refuel” light when in reality you still have 100 miles left.

I do remember with my old Peugeot 508 Diesel I set out with the challenge of achieving 1000 miles from 1 tank of fuel. (It did take 72 litres) I would often bottle it at something like 950 miles only to realise I probably still had around 6 litres of fuel left, enabling me to push it a little more next time.  I never ran out of fuel in the Peugeot but did run out of fuel in my 911 when the display still stated I had 20 miles left. 
😳😳😳

I guess every car is different and best guide is to fully understand fuel tank capacity compared to how much fuel you put in to equate reserve capacity against average mpg.  It’s a fun game especially with the Yaris Hybrid which is all about fuel economy.

It's not unhealthy, I do this at least once to all the cars I have owned to understand approx range left. 

Last summer drove 30 miles below 0 range, fill up to first click at 32.85L, about just over 2 litres left. So I understood if in winter, should not go more than approx 20 miles below. The handbook has info on amount of fuel left when the fuel light comes on. Attached for Yaris hatchback MK4. 

To add, when fuel light comes on my car can approx do 70 miles in summer with 5.4L, winter say 40 miles to be conservative. Already have a minus 30 miles marker in summer. 

[Mjolinor]

Running costs are 2% cheaper when running on empty than they are when running on full. 🙂

 

[ISL]

@Mojo1010 I wonder why the warning light is set to come on earlier with rear wiper 😂

[hind]

Better question - which market gets Yaris without a rear wiper? 😛

[ISL]

2 minutes ago, Mjolinor said:

Running costs are 2% cheaper when running on empty than they are when running on full. 🙂

 

That is a very valid point, and also performance is better, lower weight meaning less wear on suspension, brakes and tyres. Just look at F1 cars where in essence they run with minimum fuel, not even enough fuel to finish a race in anticipation of fuel saving in the event of incident such as safety car.  Much of this ethos is built into my driving style when stuck in traffic or behind a slower driver, anticipating the unnecessary braking of the car in front, maintaining distance, taking advantage of downhill stretches without braking. Saving all that fuel ready for the open road where I can enjoy again some spirited driving 👍

[ISL]

3 minutes ago, hind said:

Better question - which market gets Yaris without a rear wiper? 😛

Yes that is a good question, I guess some countries get poverty spec. Does the rear wiper deletion also save weight and increase fuel economy? I know that with the Panoramic roof there was no spare wheel provided just to compensate for extra weight of the glass vs steel roof

[Roy124]

Given a Yaris Cross has a capacity of 36ltr, at quarter tank there will be 9ltr remaining.   Useable fuel to the reserve is 28ltr.  This equates to around a 400 mile range or 100 miles per quarter tank.

If you refuel at the 25% point, App or Gauge, you will have around 15ltr remaining in the tank.

At a true quarter tank you should have 1ltr remaining before the reserve or 13 miles range.

In other words you can run to near zero on the gauge and have your 25% fuel remaining. 

Obviously these are all hypothetical values.

[Mushu84]

Each person with their own habits 

For me quarter of a tank I refuel to full, is not to keep the moisture out myth or any stuff like that is just to have fuel in the tank of my car, I hate having to go to the petrol station evetime I think let's go somewhere further away for the weekend and for my family it happens often. Also I find all the making sure I don't run out thing exhausting.

I never got the fuel red light from any of the cars I've drove but my wife tends to leave the red light sometimes with the old Yaris we own. When in holidays I tend to refuel at a quarter of a tank just not to bother with stress searching for fuel on a red light, I also stop at my convenience not pressed by the lack of fuel. 

I understand any person that lives in the city and is not going out that much why they would keep the tank lower.

 

 

[Tomv]

I fuel up when the fuel light comes on. Because I do mostly work and back trips. And  as someone mentioned before, the car is more agile as the weight is getting lower and also carrying the weight of full tank most of the time will make your fuel consumption go up.
Only exception is when I do some longer trip, for example going on holidays, because I don’t won’t to get stuck on highway with empty tank. Especially in winter.