Can You Run E85 in a Normal Gasoline Car? Here's What You Need to Know

June 04, 2024
Can You Run E85 in a Normal Gasoline Car? Here's What You Need to Know

Are you considering filling up with E85 instead of regular gasoline? While E85 can be a cost-effective and environmentally friendly alternative, it's essential to understand its compatibility with your vehicle. In this post, we'll explore what happens when you run E85 in a normal gasoline car and provide valuable insights to help you make an informed decision.



What is E85?

E85 is a high-level ethanol blend, consisting of up to 85% ethanol and 15% gasoline. This fuel type is designed for flexible fuel vehicles (FFVs), which are specifically engineered to run on both gasoline and ethanol blends.

What happens if you run E85 in a normal gasoline car?

While it's technically possible to run E85 in a non-FFV vehicle, it's not recommended. Here's why: E85 requires a specific management system that changes fueling based on ethanol content, like a factory FFV system or a retrofit flex fuel system from Advanced Fuel Dynamics.  Improper management can cause a lean condition, which can damage your engine.

Is it safe to use E85 in any vehicle?

No, it's not safe to use E85 in any vehicle. While all fuel systems built since the late 1980s are compatible with the fuel, only FFVs or vehicles fitted with an Advanced Fuel Dynamics flex fuel management system are designed to manage the fuel properly. If you're unsure whether your vehicle is compatible with E85, consult your owner's manual or contact the manufacturer.  If you have a normal gas vehicle and want to run e85, Advanced Fuel Dynamics may offer a simple plug-and-play solution for your model.


While E85 offers several benefits, it's crucial to use it only in vehicles designed or retrofitted for its use. Running E85 in a normal gasoline car can lead to engine damage from improper fuel management.   Always check your vehicle's compatibility before filling up with E85. Make informed choices about your fuel options and keep your vehicle running smoothly.