Audi A4 Gas Tank Size

The Audi A4 from 2017 to the current 2023 model can hold 15.3 gallons of gas. Older models can hold 16 or more gallons.
Written by Christelle Agustin
Reviewed by Jessica Barrett
A 2017 or newer Audi A4’s gas tank size is 15.3 gallons. 2016 and older models have fuel capacities ranging from 15.9 to a hefty 18.5 gallons. 
Knowing how much gas your car can hold will help you budget for vehicle expenses. You can find your gas tank capacity by dusting off your owner’s manual, but we know that may have been lost to time. 
That’s why the top-rated
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app,
Jerry
, is here to answer: how big is the gas tank on an Audi A4? Plus, we’ll give you a few tips for saving on fuel and your
Audi A4 insurance costs
!

How big is the gas tank on an Audi A4?

For sedans, the gas tank size can range from 13 gallons to 22 gallons. Newer Audi A4’s fuel capacity is on the lower end of the spectrum at 15.3 gallons regardless of trim level. This applies to any model year from 2017 to today.
But what if you have an older model? Lucky for you, your gas tank size is 16 gallons or more!
Take a look at the table below to see how big an Audi A4’s gas tank is by year.
Year
Gas tank size (gallons)
2017–2023
15.3
2014–2016
16.1
2010, 2012, 2013
16.9
2011
17.2
2004–2009
16.6
2003
18.5
2002
17.4
1999
15.9
1996–1998, 2000, 2001
16.4
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Audi may have cut down its gas tank sizes over the years, but that doesn’t mean you’re being ripped off! Along with gas tank capacity, you also have to think about fuel economy, or how many miles a vehicle can be driven before one gallon of gas is consumed. 
That is to say, while the 2023 Audi A4 only holds 15.3 gallons, it has a fuel economy of 28 mpg—which is 10 miles more than the 18.5-gallon 2003 Audi A4!
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How to check your Audi A4’s gas tank size

Maybe you’d like to double-check—no worries, we get it. That’s why we’ve got a few more ways for you to figure out your Audi A4’s gas tank size.

Measure the gas tank

Pull out your measuring tape and a calculator. Find your gas tank and measure the length, width, and height in inches. Multiply those numbers, then divide by 231 (the number of cubic inches in a gallon).
If you have a newer Audi, the result should be 15.3 gallons, more or less!

Check your owner’s manual

Rummage through your glove compartment and grab your owner’s manual (that you hopefully still have). Scan the table of contents and look for the term fuel tank capacity or gas tank capacity to find your magic number.

Drive till empty, then fill it up

Finally, the most precarious but accurate way of figuring out your gas tank size is to drive until your fuel gauge reads empty, then visit the nearest gas station. Fill up your tank and look at the total gallons you’ve pumped in. That’s the approximate capacity of your tank.
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How to save on fuel costs in an Audi A4

If you own an Audi A4 manufactured in the last six years, you should be getting around 28 mpg combined city/highway, which is excellent. Fortunately, you can still do more to save on gas. 
Here are a few fuel-saving tips:
  • Keep up with routine maintenance. Stay on top of your
    car maintenance schedule
    to ensure every component of your A4 is working as it should. 
  • Drive carefully. It’s common knowledge to avoid stopping and accelerating abruptly—not only for safety but also for fuel efficiency. Safe driving can save lives and money!
  • Avoid idling. If it isn’t too cold, avoid idling to warm up your car. Simply drive at a steady pace and allow your car to warm up gradually.

How to optimize your Audi A4’s insurance coverage

On top of fuel costs, you’ll have
car insurance
to worry about. Insurance companies look at your vehicle specs, engine configuration, driving history, and more when setting rates. But you can likely lower your
Audi insurance costs
by comparison shopping on the
Jerry
app!
Visit the App Store or Google Play and download Jerry. Enter your profile details (which will take a quick 45 seconds!) and Jerry will send you the most competitive quotes sourced from over 50 of the nation’s top providers. 
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