mlo1956

Hi all

I wonder if anyone has encountered this:

My car is now 1700 Kms old and I've refilled 3 times, each time it indicates a range left of 35 to 80 kms, therefore you'd think that given an average of 11.5L/100 kms, I'd have very little fuel in the tank, however when I filled up today with a range left of 34 Kms, the most I can fit in was 48 litres, which means that a range of at least 100 kms was left.

I can't figure out if I'm using much less fuel than the car shows and therefore the computer is wrong, the tank is less than the 60 litres shown in the specs, which I doubt or there's another issue.

Any ideas?

computerwi

I don't quite understand your questions, but I'll give it a shot. The average fuel economy of 11.5 L/100 km displayed by the car is never that accurate. Don't rely on that to make any calculations. I highly doubt the rated fuel capacity would be wrong. You should use the trip odometer, fill the tank up full and track the actual mileage obtained and fuel consumed at your next fill up for an accurate measurement. 11.5 L/100 km is higher than usual.

lsft

This must be your first time driving a Lexus/Toyota with a range display. I assume your fuel light has not turned on yet. Typically when the light is on there is enough gas to drive approx 80-100km. In the case of NX, I think its about 10L. As you continue to drive the remaining range will stay at a number a lot more than you drive. It is just a very conservative reading.

bbear

^ Agree with Isft, but from what I heard from the dealer from mazda and toyota, even if the gas bar went empty, you could still go 50km until it completely dries out.
And of coz, that could be the reason why there are more gas in the tank than displayed.

wildeklave

since I am in the states I go by miles and gallons but think it is very conservative.

Edmunds lists the NX as having a 15.9 gallon fuel tank. I have filled up with about 1/8 of a tank (based on the fuel icon on the dash) and only put about 12.5 gallons into the vehicle.

I have no issue withthis since I would rather be safe than sorry when it comes to running out of gas.

Rdcrow

The lowest I've seen my range read is 5 miles left and when I filled the tank I put 13 gallons in.

15RC350F

I have now filled my NX with gas 25 times, the last at 7627 miles (12,275 km). I have driven the vehicle beyond the stated range about four times, most recently quite a bit further (perhaps 30 miles [48km]). On that occasion it took 13.955 gallons (52.8 liters) to fill it.

Drtbk4ever

Good to know there is some extra range hidden away in there.

Now I have been told that if you run out of fuel, it can cause problems with the fuel injectors etc. Is that true?

My0gr81

For an older car, the bottom of the tank may have particulates and other foreign matters that get sucked up by the fuel pump as the level decreases. The biggest issue is that some cars rely on the fuel to submerge the pump to keep it cool. As the level goes down, the cooling effect does too.

fredw1

Car showing 20-mile range, and took 11.9 gallons to fill.

mtnman

This seems to be common. A number of years ago I tried a little experiment. The display said I had almost but not quite enough range left to get to my preferred gas station (something like 80 miles). I had a little one-gallon gas can (full) in the back, so I decided to check the accuracy of the display.

I drove and watched the remaining range decrease a bit faster than I expected. When it got down to one mile left, I kept going and went another 23 miles until I reached the station, with the range display remaining at 1. Filled it up and it still didn't take the rated tank capacity.

So I believe those displays should be taken as merely a general guideline, not anything accurate at all.