Know everything about the gas tank size of your car

Fueling your vehicle should be a simple and straightforward task, but oftentimes it's anything but. If you're not sure how much gas your car takes or what size tank it has, this guide is for you.

Browse by make and check your car's gas tank sizes

What is the average gas tank capacity?

The size of your car's gas tank depends on the size of your vehicle. A smaller car usually has a 12-gallon tank, while a bigger car can have 15 gallons or more. It's important to realize that MPG (miles per gallon) isn't correlated with the size of your fuel tank.

The larger the capacity, the longer you will be able to drive without stopping for gas. Although, this won't translate into better gas mileage, so keep that separate in your mind. Such characteristic is more dependent on the car model, driving habits, and other conditions.

Usually, this information is available in your car's owner’s manual. If you can't find it there, the internet is always a useful tool - a simple Google search of your car model and year should reveal its gas tank capacity. The standard capacity of a gasoline tank is between 13 and 16 gallons.

Besides, this number may change depending on the trim of your vehicle. Most cars' low fuel warning lights will activate when the gas nears reserve levels. The average amount of gas left in a car's reserve tank is between 10-15%.

What is fuel capacity?

The gas tank size is not the same as its fuel capacity. The former refers to the amount of space that the tank can physically hold, while the latter reflects the maximum amount of fuel that can be filled in said container.

In other words, the capacity is limited by the size of the gas tank. The tank's capacity refers to the amount of fuel that can be pumped into it from the filler pipe, taking into account any pre-existing fuel in the tank and with the vehicle on a level surface.

For example, a 14-gallon tank will have a 14-gallon capacity. It's important not to confuse these two terms because they're often used interchangeably, but they do have different meanings.

Fuel capacity is important because it affects how far you can drive before needing to refuel. The average fuel capacity for a sedan is around 15 gallons, while an SUV or truck will have a larger tank with a capacity of 20 gallons or more. If you're planning a long road trip, it's important to know your car's fuel capacity so you can plan accordingly.

If you have a bigger fuel capacity, your vehicle will weigh more. It's essential to know this number because a heavier car will consume more fuel. And in case you have a lower fuel capacity, your car will be lighter and thus use less fuel.

Do different car types have different oil capacities?

The size of the gas tank is not the only thing that differs between vehicle types. The oil capacity also changes, depending on the model and make of your car. For example, a Honda Civic has a different oil capacity than a Ford F-150.

The average oil capacity for a sedan is around 4 quarts, while an SUV or truck will have a larger oil tank with a capacity of 6 quarts or more. Again, it's important to consult your car's owner’s manual to find out the specific oil capacity for your vehicle. That is because the amount of oil your car needs will depend on the make, model, and year of your car.

What cars have the biggest gas tank size?

These are some of the cars with the biggest gas tank size:

  • Audi Q7 – 22.5 gallons
  • Bently Bentayga – 22.5 gallons
  • Dodge Durango – 24.6 gallons
  • Ford Expedition EL – 33.5 gallons
  • GMC Yukon XL – 31 gallons
  • Infiniti QX80 – 26 gallons

As you can see, SUVs and trucks tend to have larger gas tanks than sedans. This is because they're generally bigger vehicles that require more fuel to operate. Such cars as Bently and Audi are on the higher end when it comes to gas tank size. If you're looking for a car with a large gas tank, these are some of the options you can consider.

What cars have the smallest gas tank size?

When you think about smart cars and hybrids, you might not automatically think "large gas tank." And yet, some of these smaller cars actually have pretty sizable tanks. The Hyundai Ioniq Blue is a good example of an average-sized car with a small gas tank.

The gasoline tank on this car only holds 11.9 gallons. Smart cars are popular for being cheap, fuel-efficient, and reliable. They also have great gas mileage, averaging around 40 miles per gallon. Plus, they weigh 700 pounds less than most other American vehicles.

So, the smallest gas tank sizes have those vehicles that are good on fuel but don't have a large tank.

What size gas tank should I buy?

The capacity of your car's gas tank is generally determined by the vehicle size. Most small cars have 12-gallon gas tanks while larger vehicles may have 15 or more gallons.

It's essential to realize that fuel efficiency (miles per gallon) isn't often influenced by petrol tank size. A car with a smaller tank that gets 30 mpg will have the same range as a car with a larger tank that gets 15 mpg.

OK, so, what affects the size of your gas tank? Here are a few things:

  • The car's size and weight

It is obvious, and we have already discussed it, but a larger car will have a bigger gas tank. Its weight affects gas mileage, and a heavier car will use more gas per mile.

  • The car's purpose

Cars used for long-distance travel will have larger tanks because they need to be able to travel longer distances without stopping.

  • The car's fuel efficiency

As we said before, fuel efficiency is not always affected by the size of the gas tank. However, some highly efficient cars have smaller tanks because they don't need as much gas to travel the same distance as a less efficient car.

  • How far you plan to drive on a single tank of gas

Your gas tank size should be bigger if you plan to drive long distances without stopping. Besides, in case of an emergency, it's always good to have a little extra gas in the tank.

  • How much trunk space you have

In case your trunk is small, you might want to choose a car with a smaller gas tank. A larger tank takes up more space and may not fit in your trunk.

When it comes to determining the size of your car's gas tank, there are a few factors that come into play. The first is the size and weight of your vehicle. A smaller, lighter car is going to have a smaller gas tank than a larger, heavier car.

The second factor is how far you plan to drive on a single tank of gas. If you're only going to be driving around town, you can get away with a smaller gas tank. However, if you're planning on taking longer trips, you'll need a larger tank. The third factor is the fuel efficiency of your car. A highly efficient car can get by with a smaller gas tank because it doesn't use as much gas per mile.

Finally, you need to consider how much trunk space you have. If you have a small trunk, you might want to choose a car with a smaller gas tank so it will fit.

What if I buy the wrong size gas tank?

We hope, that our guide will help you. But in case you already bought the gas tank of the wrong size, we have several recommendations.

How would you know that the size is incorrect? Well, first of all, you may feel that the car is not running as smoothly as it used to. It may also be difficult to start the engine, or it might stall more often than usual. One more factor you can spot is that the car`s mileage has decreased. If any of these things have happened, it means that the gas tank doesn't fit, and you need to replace it.

The process of replacing a gas tank is not difficult but might be expensive. The first thing you need to do is to take the car to a qualified mechanic who will assess the situation and give you an estimate of how much it will cost to replace the gas tank.

Once you have the estimate, you can decide whether or not to proceed with the replacement. If you do decide to replace the gas tank, the mechanic will remove the old one and install the new one in its place. The entire process should take less than an hour and shouldn't cost more than a few hundred dollars.

We hope you found this guide helpful. Good luck!

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