what happens if you put diesel in a gas car

what happens if you put diesel in a gas car

What Happens If You Put Diesel In A Gas Car?

It’s an unfortunate mistake that can be easily make – accidentally putting diesel fuel in a gasoline-powered car. This mishap can cause serious damage to your car’s engine and could cost you a lot of money down the line. We’ll explore what happens if you put diesel in a gas car and how it can be avoided.

How Does This Happen?

It’s an easy mistake to make, forgetting that your car runs on petrol when making a quick fuel stop. Other factors, such as poor lighting, or mislabeled fuel pumps, can contribute to the mess up.

Consequences Of Using Diesel In A Gas Car

The consequences can be disastrous:

  • Car Won’t Start – Diesel fuel is heavier than gasoline, so when it’s run through a gasoline engine, it won’t combust properly.
  • Engine Damage -The diesel fuel can build up in the engine and clog the fuel filter, fuel lines, and eventually the injectors.
  • Costly Repairs – All of this engine damage can be costly to repair, with some bills running into the thousands.

Preventive Measures

Fortunately, it’s easy to avoid this problem. Taking the time to double-check that you are filling up with the right fuel can save you a lot of time and money. Here are some tips to make sure this doesn’t happen to you:

  • Pay Attention To Your Surroundings – If the area is poorly lit, find another fuel station that is better lit, or wait for daylight.
  • Check The Pump Color – Most often, diesel fuel pumps will be a different color than gasoline pumps – usually green or yellow.
  • Check Your Car’s Manual – Your vehicle’s manual will tell you exactly what fuel your engine takes.
  • Pay Attention To Your Car – Take note of your car’s label or check the engine or fuel tank caps to make sure you’re using the right fuel.


Putting diesel into a gas car is a costly mistake that can easily be avoided. Double-checking your pump, paying attention to your surroundings, and consulting your car manual can help you avoid this costly accident.

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