If you’ve accidentally put the wrong fuel type in your car, it’s important to take action quickly to minimize potential damage to your vehicle’s engine and fuel system. Here’s what you should do:

1. Stop Pumping Fuel: If you realize you’ve put the wrong fuel in your car while still at the fuel station, immediately stop and do not start your car.
2. Do Not Start the Engine: Starting the engine with the wrong fuel mixture can cause significant damage to your car’s fuel system and engine components. Even if the wrong fuel has yet to reach the engine, do not attempt to start your car.
3. Push or Tow the Car: If you’re still at the fuel station and haven’t started the engine, try to get assistance pushing or towing your car to a safe location away from the fuel pumps.
4. Contact a Professional: Contact a mechanic or a roadside assistance service. They can advise you on the best action and may offer to drain the incorrect fuel from your vehicle’s tank.
5. Do Not Drive the Car: Do not attempt to drive if you’ve already started the engine with the wrong fuel. Driving in this condition can cause severe engine damage. If you still need to start the engine, avoid driving to prevent the wrong fuel from reaching the engine.
6. Fuel System Drain: In many cases, a mechanic must drain the fuel tank and lines to remove the incorrect fuel mixture. This process involves removing the fuel tank, draining the incorrect fuel, and flushing the system with the correct fuel.
7. Inspect for Damage: After the fuel system is drained and flushed, the mechanic should inspect the fuel system components and the engine for any potential damage caused by the wrong fuel.
8. Fuel Filter Replacement: Depending on the extent of the damage, it may be necessary to replace the fuel filter, as it may have captured some of the contaminants from the wrong fuel.