Have 54 plater WRX STi, the fuel gauge never resets to zero when the ignition is turned off so i never know what the lowest point is that the needle will read until you are completely empty. I filled up the other day thinking i was almost out of fuel and i managed to put 51 litres into the tank so still had 9 litres to play with. Does anyone know what the lowest point of the needle reading is?

Also how much further can you get on 9 litres of fuel driving normally (no constant boosting)?....25-35 miles??

 

Not sure mate I never let my last my04 impreza get that low as it would suffer fuel surge which isnt good for the engine

 

Drove 30 miles after light came on but this was looking for a petrol station, would not normally do this!

 

Low fuel light comes on at around 8 litres. Not advisable to run that low for various reasons including possibly running lean, thereby running the risk of detonation

 

Always fill up when needle hit 1/4 tank

 

I'm sure it works out to around 12/10 litres in the tank.


Steve

 

Was just trying to work out how many miles i could get out of a fuel tank, i was on 287 miles when the light came on

 

You don't need to run it to empty to work out how many miles you can get out of a tank, and it'd dangerous to try it that way anyway.

 

Thats about what I have left in my JDM Classic when the needle reads empty.

 

I always try to get fuel onboard within 20 miles if possible once the light comes on ... as soon as I see it come on I press the odometer reset so I can see how close to fumes I am ... I've had it up to 30 miles but I was bricking myself and keeping it very smooth.

 

2007 WRX just for ****s and giggles really, tried to see how far I could get once the light came on.

A-road driving on average 50mph drove for 66 miles, there was still just about 3 liters left in the tank.

i.e. at a normal fuel consumption of around 9l/100km that would mean the light comes on with about 12l left in the tank.

 

Don't do it - not worth the risk of running lean (e.g. when hooning round bends).

As above, regard 1/4 on on the gauge as 'Empty'!

 

I'm sure it's two gallons on the light, so about 9 litres. I've done a full 80miles on the light before though..

And surge is possible with anything below half a tank, trust me it's annoying! I intend to go for a swirl pot setup at some point, just to stop this.