Just a quick question not used to the LCD display play that tells me how many miles I've got left before I run out of fuel but also have a analogue clock in the centre of the driving display play the LCD control 5 miles but in an instant drops to zero but the analogue clock needle is still a little bit above where it should go to 0 which one do you guys think is the most accurate or if it goes to zero on the LCD screen how much do you think I've got left in the tank it's not a big issue but I was just curious once it's not reading 0 on the LCD screen I used to fill up

The calculation on range left it based on your last few miles of driving and how that is economic or not.

I would really never be going lower than 50 miles range showing before putting fuel in, and never trying to carry on with it showing 0.

I hope you have a spare fuel can and filler carried with you.

I'd trust the needle more than the Maxi Dot. As you said the Maxi Dot goes in units of 5 miles so if it calculates less than 5 miles to refill then it will show 0.

 

I've had my Maxi Dot show 0 miles once, and drove on for just over a mile to the nearest petrol station. Far from ideal as I usually never let it get that low but I was on a dual carriageway and trying to get to the nearest fill up.

On 30/12/2020 at 10:27, e-Roottoot said:

The calculation on range left it based on your last few miles of driving and how that is economic or not.

I would really never be going lower than 50 miles range showing before putting fuel in, and never trying to carry on with it showing 0.

I hope you have a spare fuel can and filler carried with you.

 

Over 15 years of Skoda ownership, 3 vehicles and being obsessive about range and MPG I can confidently state that unless there is a fault with the sender you will always have at least one gallon of fuel left when the maxidot drops to zero miles, its their way of creating a fuel reserve. The fuel guage needle will be on zero and the measuring block in VCDS will show + / - 5 litres remaining, the system is incredibly accurate but the display deliberately misleading to give a security margin.

 

When you brim the tank it will show full and the maxidot range will be that which you would get (assuming driver & journey profile remains as before) if you drove till the tank was empty, we will all recognise that when filling up at zero miles we never ever get the range initially indicated at fill up.

 

As the vehicle consumes the fuel the guage will drop in a linear manner and the maxidot range will drop in a linear manner until the last 1/4 of the tank at which time the for instance 50 mile "reserve" range will gradually dissapear. For example you fill up & the maxidot shows 700 miles range but you never seem to get more than 600 miles before refilling at "zero miles remaining", you will travel 150 miles and the fuel guage will drop 1/4, the maxidot will show 550 miles remaining, at half a tank you will have travelled 300 miles & the display will show 400 miles remaining, at 1/4 tank remaining you will have travelled 450 miles and the maxidot will show 250 remaining. You will only drive 150 miles before the guage has hit zero and the maxidot shows zero miles remaining, you will in fact have 100 miles of fuel left in the tank.

 

The above example was to make the numbers easier, you would likely have 60 miles reserve.

 

Before this CR engine I drove all my vehicles to empty several times, (a couple of times when the sender was faulty) the last time was to establish the true range, when it ran dry I filled it with 5 litres exactly, the fuel guage moved up within the red zone, the maxidot showed 40 remaining miles, remarkable accuracy for an inch or so of fuel at the bottom of the tank, I drove 4 miles to a filling station during which time the remaining miles dropped to zero in 5 mile increments.

 

Over the years I have nearly always driven 50 miles beyond when the maxidot shows zero miles remaining so it must be hundreds of times, 50 miles is when I start to get anxious, I have gone beyond it an not yet run out aside from my first range test, I think that time it was 85 miles but I was in super eco mode.

Edited 4 January, 20215 yr by J.R.

@J.R.

I can tell you that if the car shows 60 miles and you were driving dead economically and getting 53 mpg say, then you drive spirited on a different type of road having come out of the 50 mph average speed camera area you can run out of fuel in say 30 miles.

 

Also that in a mk2 Fabia TSI when venting the 45 litre tank you can get maybe 59 litres in when you really have taken the tank low to the point of only having a very little fuel left in the tank and it showing 10 miles range.

If you can run even lower then good, but why, you might have a hill to climb and might not get up it.

 

http://briskoda.net/forums/topic/447650-well-that-was-a-bit-odd-fuel-tank-capacity

 

Edited 4 January, 20215 yr by e-Roottoot

No question about that, although maybe not double the consumption on public roads, my MK1 1.9tdi I did 225000 miles in averaging 60-65mpg, I once did 10 full chat laps of the short windy race circuit at Croix en Ternois until the rear pads wore out and the consumption was 19 mpg from memory.