Skip the auto shop - Our mechanics make house calls

Is it Safe to Drive With a Fever?


A fever is considered a higher than normal body temperature. A fever can be caused by viruses, bacteria, drugs, toxins, or fungi. Normally a fever comes with other symptoms depending on the type of illness that causes the fever. Is it safe to drive with a fever? It depends on how high your fever is. We will look at fevers more in depth so you can determine when it is safe to drive, and when it is not, depending on how high your fever is.

  • The baseline temperature when determining a fever is 98.6 degrees Fahrenheit. A fever is generally considered a temperature of 100.4 degrees Fahrenheit or higher. The body’s temperature fluctuates within a degree throughout the day, which is why the threshold for a fever is 100.4.

  • Low-grade fevers are 100 degrees Fahrenheit to 101 degrees Fahrenheit. Intermediate grade fevers are 102 degrees Fahrenheit. High-grade fevers are from 103 degrees Fahrenheit to 104 degrees Fahrenheit. Dangerous fever temperatures are over 104 degrees Fahrenheit to 107 degrees Fahrenheit.

  • A high-grade or dangerous fever can cause delirium, which is a condition that causes a person to be confused and unfocused. If you have this high of a fever, and are experiencing delirium, it can be too dangerous to drive.

  • Another risk with high fevers is seizures. Seizures are associated with dangerously high fevers that are acute, and can happen in people who normally do not have seizures. If you have had a seizure, there are driving restrictions in place that vary from state to state that say how long you have to wait to drive after you have a seizure. For example, if you have a seizure in Michigan, the driver has to wait six months before they can drive again.

  • If you experience confusion, delirium, or seizures while you have a fever do not drive. Call someone who is close to you to take you to the hospital, or call emergency services if a family member is actively seizing. High fevers are dangerous and should be treated by medical professionals.

If you have a low-grade or intermediate grade fever, you may be okay to drive as long as you are not experiencing any confusion and can focus on the road. If you have a high-grade fever or a dangerously high fever, it is best not to drive for your safety and the safety of others.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Skip the repair shop, our top-rated mechanics come to you.

At your home or office

Choose from 600+ repair, maintenance & diagnostic services. Our top-rated mechanics bring all parts & tools to your location.

Fair & transparent pricing

See labor & parts costs upfront, so you can book with confidence.

12-month, 12,000-mile warranty

Our services are backed by a 12-month, 12,000-mile warranty for your peace of mind.

Get A Quote

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.


Post a question and get free advice from our certified mechanics.


More related articles

Insurance Requirements for Car Registration in Kentucky
The Kentucky Transportation Cabinet requires that all drivers in Kentucky carry liability automotive insurance, or “financial responsibility” in order to operate a vehicle legally and maintain vehicle...
The Traveler’s Guide to Driving in Malaysia
CraigBurrows / Malaysia is a popular destination for many tourists today. The country has amazing sights and attractions that you will want to explore....
P2159 OBD-II Trouble Code: Vehicle Speed Sensor B Range/Performance
Diagnostic Trouble Code (DTC): P2159 P2159 code definition Vehicle Speed Sensor B Range/Performance Related Trouble Codes: P2158: Vehicle Speed Sensor B P2160: Vehicle Speed Sensor B Circuit Low P2161:...

Related questions

Q: How do I open the hood?

Opening the hood in your vehicle is very easy, and takes only a few steps: Pull the hood release lever, which is located to the left of the steering column. You should hear the hood unlatch when you pull...

Q: What does the Low Temperature indicator mean on the dash?

While you’re probably familiar with the High Temperature light on the dash, you may not know what the Low Temperature indicator means when it comes on. This light simply tells you that the coolant temperature is low, or cooler than...

Q: How do you lock the passenger windows?

Sometimes, particularly if you’re riding with Children, you want to make sure that the windows stay up. This is easy with the Altima. Just use the window lock button on the driver front power window panel. Here’s how to use...