Tip #25: The fuel warning light is a reserve for reaching a station, not a range to test
There is no single answer for how far a car can go once the low fuel light comes on. It depends on the vehicle, the driving and the conditions. Treat the light as a signal to head to the nearest station now, and check the owner's manual for what your car's warning means.
Tip #25 in one line
There is no single answer for how far a car can go once the low fuel light comes on. It depends on the vehicle, the driving and the conditions. Treat the light as a signal to head to the nearest station now, and check the owner's manual for what your car's warning means.
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Call nowWhy there is no one number
Manufacturers set the fuel warning at different reserve levels, and the distance that reserve covers depends on the car's consumption, speed, traffic, terrain, weather, load and whether the air conditioning or heater is running. The same car can go noticeably farther on an open highway than in stop-and-go traffic on Route 1.
The range estimate on the dashboard is a calculation from recent driving, and it can drop quickly when conditions change. Some cars show dashes or zero while fuel is still in the tank; others are more conservative. The owner's manual, not a rumor, is the source for your vehicle.
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Call nowWhy running low costs money
In many cars the fuel pump sits inside the tank and relies on the fuel around it for cooling. Running on very low fuel regularly can shorten its life. Running completely dry can also draw sediment into the fuel system.
A diesel that runs dry may need its fuel system primed before it will start again, which turns a short stop into a service call.
In winter, keeping the tank at least half full is good practice. It reduces condensation in the tank and gives you a reserve if you are stuck in traffic or a snowstorm with the heater running.
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Call nowWhen the light comes on
If you are on a stretch of highway with long gaps between stations, plan the stop before the light comes on. Fuel up before heading onto long stretches, before a big storm, and before you know you will be sitting in traffic. A dashboard range number is only an estimate, and it does not know about the traffic jam ahead.
Go to the nearest station, not the cheaper one farther away. Drive smoothly, keep a steady speed, and avoid heavy acceleration.
If the car runs out before you get there, coast as far onto the shoulder or off the road as possible and turn on the hazard lights. Do not walk along a busy highway; see Tip #16.
A fuel delivery brings enough fuel to reach the next pump, for one flat delivery price plus the fuel at cost, quoted on the call to (908) 444-0129. The fuel delivery guide explains how it works, and more short tips are on the blog.
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Call nowMore on fuel
Keep reading, or go back to every post on the blog.
- Tip #16: Out of gas on a highway, stay with the car instead of walking for fuel
- What to do when your car breaks down in New Jersey
- Flatbed vs wheel-lift towing: which does your car need?
- What happens to your car after a police-ordered tow in New Jersey
- Dead car battery in a New Jersey winter: why it happens and what to do
- Flat tire on a New Jersey highway: what to do
- EV towing in New Jersey: what electric car owners need to know
- What to do after a car accident in New Jersey
- All posts
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