Puzzles that involve fuel flow and pipe systems often trick the mind with their intricate designs and hidden obstructions. In this challenge, we are asked to determine which car will be fueled first based on the flow of gasoline through the pipes. While it may seem like a simple question at first glance, careful observation and logical thinking are required to arrive at the correct answer.
So, let’s put our thinking caps on! Which car do you think will get filled first? Take a close look at the image and make your best guess before reading the breakdown.
Common Mistakes in Solving the Puzzle

Before we dive into solving this puzzle, let’s address some common errors people make when attempting these types of logic challenges.
One common mistake is overlooking blocked paths. Many people assume that all paths are open and that fuel will reach all cars evenly. However, some sections of the pipeline are closed or blocked, which prevents fuel from reaching certain cars. If you don’t check carefully, you might choose the wrong car.
Another frequent error is focusing only on the closest car. It’s natural to think that the car closest to the fuel source will be the first to get filled. But in reality, fuel flow depends entirely on the pipeline structure, not just distance. The shortest path doesn’t always mean the fastest route.
Many also forget to consider the logic of fluid movement. While this puzzle is simplified and doesn’t take real-world fluid dynamics into account, it still follows basic flow logic—fuel moves through open pathways and stops when a closed or blocked pipe is encountered. If fuel reaches a dead-end, it won’t continue flowing.
Now that we’ve addressed these mistakes, let’s break the puzzle down step by step.
Video : Which Car Gets Fueled First
Step-by-Step Analysis of the Pipe System
To find out which car gets fueled first, let’s follow the gasoline’s journey from the top source and analyze each pathway.
First, we observe the fuel source. Fuel starts at the top center and can move downwards through multiple branching paths. We must check which routes are open and which are blocked.
Next, we examine the left path leading to Car 1 and Car 2. The fuel initially flows toward the left side, reaching a large circular tank. However, the outlet leading toward Car 1 is blocked. This means Car 1 will receive no fuel. The fuel then moves downwards toward Car 2. But the pipe leading to Car 2 is also blocked, preventing gasoline from reaching it. As a result, neither Car 1 nor Car 2 will get any fuel.
Then, we analyze the right path leading to Car 3 and Car 4. On the right side, fuel moves towards another large circular tank. The pipeline leading to Car 4 is completely blocked, preventing fuel from reaching this car. The only open pathway is the straight path leading down to Car 3.
Since Car 3 is the only vehicle with an open and unobstructed fuel line, it will be the first and only car to receive fuel in this scenario.
Final Answer: Car 3 Gets Fueled First
After analyzing all possible routes, we can confidently conclude that Car 3 is the first car to get filled with fuel. The other cars either have blocked pathways or no access to the gasoline source.

Did you get it right? If not, don’t worry—these types of puzzles are designed to test your ability to observe details carefully and think logically.
Engage with the Puzzle Community!
Now it’s your turn! Did you come to the same conclusion, or did you choose a different car? If you picked the wrong car, where do you think your reasoning went wrong? Do you enjoy these types of logic puzzles?
Video : Test Yours IQ Which Car Gets Fueled First
Leave a comment below with your thoughts and share this puzzle with your friends to see if they can figure it out too!
Solving puzzles like this helps sharpen your logical thinking and problem-solving skills, so keep challenging yourself with more brain teasers and tests. Who knows? The next puzzle might be even trickier!