
The location of a car's fuel tank depends on the make and model of the vehicle. While the fuel tank itself is typically located at the bottom of the car, under the cabin, the fuel filler door can be found on either the left or right side of the vehicle. In the US, it is common for the fuel tank door to be on the left side of the car, as most drivers sit on the left side. In contrast, European manufacturers often place the fuel tank on the left side of the car because drivers sit on the right.
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What You'll Learn
- The fuel tank is usually located centrally, underneath the car
- The fuel filler door, however, can be on the left or right
- The arrow on the fuel gauge icon points to the side with the fuel filler door
- The US has no regulations on the side of the car the fuel door should be positioned
- The fuel filler is often on the opposite side of the vehicle from the exhaust pipe outlet

The fuel tank is usually located centrally, underneath the car
The fuel tank in a car is usually located centrally, underneath the vehicle. This means that the fuel filler door, or gas cap, can be found on either the left or right side of the car, depending on the model. For example, the fuel filler door may be on the left side for a Talon and on the right side for a Cruze.
The placement of the fuel tank is influenced by several factors, including regional preferences and the position of components beneath the vehicle. In countries where the steering wheel is on the left side, such as the United States, drivers often prefer the fuel tank door to be on the left as well. This is because it is easier to pull up close to the fuel pump, and there is less walking involved when exiting the car to refuel.
On the other hand, in countries where the steering wheel is on the right side, such as the United Kingdom, Australia, India, Japan, New Zealand, and Hong Kong, the preference is typically for the fuel tank door to be on the right side. This is because it is more convenient to have the fuel tank door on the same side as the driver when the steering wheel is on the right.
However, the decision to place the fuel tank on the left or right side is also influenced by the position of other mechanisms in the car. If a large mechanism, such as a speaker, is located on the left side, the fuel tank will typically be placed on the right side to make room.
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The fuel filler door, however, can be on the left or right
The fuel filler door can be found on either the left or right side of a car. While the fuel tank itself is typically located at the bottom of the car, beneath the cabin, the filler door is usually found on a rear quarter panel, either on the driver's side or the passenger side.
The placement of the fuel filler door is influenced by several factors. In countries where the steering wheel is positioned on the left side of the car, such as the United States, there is a preference for the fuel filler door to be on the left as well. This arrangement is more convenient, as it allows drivers to pull up closer to the fuel pump and reduces the distance to walk when refueling. Conversely, in countries where the steering wheel is on the right side, such as the UK, Australia, India, Japan, New Zealand, and Hong Kong, a right-mounted fuel filler door is often preferred.
However, the decision to place the fuel filler door on the left or right is not solely based on regional preferences. The position of components beneath the vehicle also plays a significant role. If a vehicle has a large mechanism on the left, such as a speaker, engineers will typically place the fuel tank and filler door on the right side, where there is more space. Therefore, the placement of the fuel filler door is carefully considered during the design process to ensure optimal performance and functionality.
To easily determine the side of your fuel filler door, you can look at the gas pump icon on your dashboard. Near the fuel gauge, you will usually find a small arrow, often without a handle, pointing left or right. This arrow indicates the side of your vehicle where the fuel filler door is located, eliminating any confusion when pulling up to a gas pump.
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The arrow on the fuel gauge icon points to the side with the fuel filler door
The fuel tank in most cars is located either on the left or right side of the vehicle, usually on a rear quarter panel. The fuel filler door can be on the driver's side or the passenger's side. In some vehicles, the fuel tank is located centrally at the bottom of the car, underneath the cabin.
Locating the fuel tank can be a challenge, especially when driving a new car. In such cases, the arrow on the fuel gauge icon comes in handy. This arrow points to the side with the fuel filler door, saving drivers from the embarrassment of not knowing where the fuel filler cap is located. This feature was first introduced by Ford in 1989, after a company designer, Jim Moylan, experienced frustration in locating the filler cap.
Almost all modern cars now have this arrow on the fuel gauge, which is usually located on the dashboard. If the arrow points to the left, the car's filler cap is on the left side, and vice versa. This feature is particularly useful when you are in a hurry or are unfamiliar with the vehicle.
In addition to the arrow, some car models also indicate the side of the fuel filler through the fuel bowser icon on the gauge. The fuel hose depicted in this icon will be on the same side as the fuel tank. However, it is important to note that not all cars have this arrow, and in some cases, the arrow may be incorrect.
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The US has no regulations on the side of the car the fuel door should be positioned
The placement of a car's fuel door is influenced by various factors, including regional preferences, vehicle design, and safety considerations. While there are regulations that specify the fuel door must be at the widest part of the car, away from the exhaust system and crumple zones, there are no US regulations dictating which side it should be on. This lack of standardization can be frustrating for drivers, especially when they pull up to a gas station and forget which side their fuel tank is on.
In the US, the fuel tank door is commonly placed on the left side of the car, as most drivers sit on the left side. This arrangement makes it easier to pull the left fender closer to the gas tank. Conversely, in countries like European nations, where drivers sit on the right side of the vehicle, it is more common for the fuel tank to be positioned on the left side of the car.
The decision to place the fuel tank on the left or right side is influenced by factors such as the position of components beneath the vehicle. If a vehicle has a large mechanism on the left, such as a speaker, engineers will typically place the fuel tank on the right to optimize space. Additionally, some argue that placing the fuel door on the passenger side is safer, especially if one runs out of gas on a busy highway and needs to refill from a canister.
While some drivers prefer having the fuel door on the driver's side for convenience, others argue that it is safer and more practical to have it on the passenger side. This preference is influenced by the evolution of gas stations and self-service, where drivers can now pull up to either side of the pumps. Ultimately, the lack of US regulations on the positioning of the fuel door allows for flexibility in vehicle design and regional adaptations while also presenting drivers with the challenge of remembering which side their fuel tank is located.
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The fuel filler is often on the opposite side of the vehicle from the exhaust pipe outlet
The placement of a car's fuel filler is influenced by several factors, including regional preferences and the position of components beneath the vehicle. While there is no standardized location, one common trend is for the fuel filler to be placed on the opposite side of the vehicle from the exhaust pipe outlet.
This placement is not just a coincidence but is often intentionally designed to comply with safety regulations. FMCSR 393.65 states that "fuel spilled vertically from a fuel tank while it is being filled will not contact any part of the exhaust." By placing the fuel filler on the opposite side of the exhaust, this regulation can be effectively met. This design choice helps prevent spilled fuel from coming into contact with the exhaust, reducing the risk of fires or other hazards.
The positioning of the fuel filler also takes into account practical considerations at filling stations. If all cars had their fuel fillers on the same side, it could contribute to congestion at gas stations. Having varying filler locations allows for more efficient traffic flow and easier access to pumps, regardless of which side the filler is on.
In some cases, the placement of the fuel filler may be influenced by regional or country-specific preferences. For example, in the United States, where drivers sit on the left side of the car, it is common for the fuel tank door to be on the left as well, making it more convenient for drivers to pull up to the gas tank. In contrast, European manufacturers often place the fuel tank on the left side of the car since drivers sit on the right.
While the fuel filler's location can vary, it is important to note that the fuel tank itself is typically located at the bottom of the car, under the cabin, in most vehicles. This central location ensures a balanced distribution of weight, contributing to the overall stability and handling of the vehicle.
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Frequently asked questions
The fuel tank is located at the bottom of the car, under the cabin, in most vehicles. The fuel filler door can be on the left or right side of the car, usually on a rear quarter panel.
You can look at the gas pump icon on your dashboard. Near the fuel gauge or icon, you will see a small arrow, whichever side it is facing is the side your fuel tank door is on.
There is no standard side for the fuel tank as there are no government regulations that address this. It is also speculated that having the fuel tank on different sides of cars prevents congestion at gas stations.
For safety reasons, it is illegal to have the gas tank in the middle of the car because an impact on the rear side of the vehicle could lead to gas splashing and the car exploding.











































