Does Audi A4 Require Premium Gas – Complete Instruction

Does Audi A4 require premium gas? Since it is a high-end version, it is right for people to wonder this same question.

The Audi A4, with its fifth generation, has shown to be a competent challenger to the Mercedes C-Class and BMW 3-Series.

The A4 sedan’s premium stance and luxurious prowess are hard to ignore. Since great cars require premium gas, is it necessary for our A4 car? 

Here to discuss all things about what gas for audi a4, so let’s get started.

What Type Of Gas Does An Audi A4 Take?

does audi a4 require premium gas

The suitable gas, based on Audi A4 versions, will be discussed later in the article. Here, we will have a look at different gasses and their compatibility.

Reformulated gasoline is a kind of fuel that burns more environmentally friendly than regular gasoline. Given RFG’s green credentials, one may expect Audi to provide some ideas.

On the other hand, Audi stays neutral, neither recommending nor against using RFG. Yet, from our experience, many automobile manufacturers suggest reformulating gasoline when feasible.

Audi is likewise concerned about the usage of ethanol in their vehicles. According to the owner’s manual, ethanol-blended gasoline could be used for the Audi A4.

However, the ethanol mix cannot go above 15% for models built after 2015. A4s manufactured prior to 2015 (up to 2014) can only accept 10% ethanol.

Most high-performance vehicles run on ethanol-blended gas. E85 is a popular type of ethanol-blended fuel. The 85 in E85 signifies a combination of 85% ethanol and 15% normal gasoline.

For the Audi A4, only certain engines are FlexFuel (E85) compatible. Engine manufacturers leave several signals or markers indicating a car’s E85 compatibility.

A Flex-Fuel logo on our car is an example. If it is available, our car is E85 compliant.

Fuel may be mixed with a variety of things, including cleaning chemicals. Detergents are essential as they keep fuel system parts clean.

However, it’s important to note that Audi highly discourages using fuel with additives of Silicon and Metallics. They may severely harm the fuel system and engine.

MMT stands for Methylcyclopentadienyl Manganese Tricarbonyl. It was promoted and offered as an octane booster.

Although Audi does not recommend it, MMT or MTBE, both octane enhancers, may be utilized.

Does Audi A4 Require Premium Gas?

Audi A4 models made after 2004 require standard unleaded fuel with an octane rating of at least 87. Audi suggests premium fuel with an octane value of 91 for maximum performance.

The Audi A4 is a premium-class automobile, and we propose that higher octane ratings than those suggested by the manufacturer be used.

In the case of the Audi A4, we advocate going beyond 89 octane for engine health and improved performance.

Do All Audi Require Premium Gas? 

what gas does audi a4 take

No, Premium gasoline is not required for all Audi cars. Many current automobiles can run on ordinary petrol without issue.

Older Audi versions may not perform as well on normal fuel as on premium.

Any Audi installed with automatic turbo engines must run on Premium gas. However, there are other exceptions, like the Audi TT, which is naturally aspirated and hence requires typical fuel.

Furthermore, any engine with direct injection needs to run on Premium gas to function properly and last longer.

So, when our vehicle is designed with direct injection, we will need to utilize premium gas.

Having said that, many other Audi cars don’t need Premium petrol and may operate on normal gas.

Why Does An Audi A4 Require Premium? 

When we pull into a petrol station to refill our tank, we generally have three options: premium unleaded, midgrade, and normal fuel.

Choosing one of those three figures, 87, 89, or 93, for our Audi could be more essential than we realize. Do you know what it is? Let’s find out more here.

What Is Octane, And What Does The Octane Rating Mean?

It’s critical to first grasp octane value and its function on engine combustion. More-octane gas can withstand more compression until detonation.

It reduces the possibility of combustion at the incorrect moment. It could occur occasionally, but it is rare to damage the car. When it happens frequently enough, it might cause engine damage.

In America, the octane of unleaded gas varies from:

  • Premium unleaded: between 91 and 94
  • Mid-grade unleaded: between 88 and 90
  • Regular grade unleaded: 87

Although premium gas gets an octane rating ranging from 91 to 94, the octane 93 is the most frequent premium grade seen at most gas stations.

The greater the octane rating, the smaller the chance of pre-ignition or knocking at increased pressure.

Knocking may cause catastrophic engine damage. It is why high-performance automobiles with greater compression ratio engines require higher octane petrol.

Here are some benefits of high octane ratings:

  • Increasing the fuel efficiency of the vehicle
  • Increasing and sustaining engine performance
  • Completely and effectively combusting
  • Emission reduction through improved combustion

What’s The Difference Between Premium And Regular Fuel?

The most noticeable distinction between the premium and normal types is fuel economy. Normal gasoline has an octane rating of 87, and premium gasoline has a rating of 91 to 93.

Overall, most current cars can operate on typical gasoline safely. Unless our particular model requires premium, some older Audi cars will operate as well on normal or premium fuel.

Regardless of premium fuel rank, both kinds of gas may have additional detergents to cleanse the engine and assist in maximum performance.

Lower additives leave more debris on the engine’s parts, like fuel injectors, and cause low performance.

Many car merchants and dealers provide various additive blends that may be used with any grade of gasoline.

However, we’re less likely to require them with a premium rating since it has more additives than regular ones.

Why You Should Use Premium Gas in Your Audi?

It’s critical to stick to the octane recommendations for our Audi car. Using the correct octane rating, we can protect the engine and promote maximum efficiency and performance.

We’ll probably drop performance if we use an incorrect octane rating.

It is because the ignition timing and boost pressure in turbo vehicles are reduced in reaction to any knock caused by the lower-octane fuel.

Read our Audi handbook or the sticker on the fuel-filler cap for recommendations.

Do Audi A4 Require Premium Gas?

audi a4 gas type

Due to their turbocharged engines and direct-injection technology, several Audi cars are designed to operate on the premium Audi A4 fuel type.

We can harm our Audi A4’s engine and perhaps cause significant damage when we don’t. Here are different versions of the Audi A4 and their fuel requirements.

2016 To Present

The latest generation Audi A4 is available in two engines. Both of them feature a 2.0-liter displacement.

One of them has a more powerful engine with 261 horsepower. Instead, the other possesses lesser power, 201 horsepower.

The two engines are gasoline-powered, and according to the Audi A4 owner handbook, at least 87-grade octane gasoline is required.

However, 91-octane is advised for the most optimum performance. Thus for 2016, 2017, or even 2019 audi a4 gas type, it should be premium.

2008 – 2016

The fourth generation Audi A4, commonly known to customers as the B8, has a 2.0-liter inline-four engine. Besides, there are 3.2-liter and 3.1-liter six-cylinder engines.

Audi advised using an octane level of at least 87 for gasoline in these engines. Once again, the 91-octane fuel is preferred for optimal performance.

2004 – 2008

The third-generation Audi A4 was given the code name B7. The B7 was available in 2 four-cylinder engines. They are with displacements of 2.0 and 1.8 liters.

Besides, The 6-cylinder engines had displacements of 3.1 and 3.0 liters. All of those engines require at least 91-octane fuel.

2000 – 2004

There are three displacements available for the 2nd generation Audi A4, commonly known as B6.

The three engines available are a 3.0-liter six-cylinder, a 2.8-liter six-cylinder, and a 1.8-liter inline four-cylinder.

At least 87-octane is suggested, while 91-octane is advised for the greatest performance.

1994 – 2000

Audi A4’s initial model had two displacements for the engine. The two engine types were a 2.8-liter six-cylinder and a 1.8-liter inline four-cylinder.

Once more, 87 octane is the minimum rating, with 91 octanes being suggested.

Frequently Asked Questions

Does Audi A5 Require Premium Gas? 

Premium unleaded gasoline is suggested for most models of the Audi A5. The octane value should be 91.

As the manual suggests, when premium fuel is unavailable, normal 87-octane fuel may be utilized temporarily.

What Happens When Audi Regular Gas In My A4 Audi? 

The suggested Audi type of fuel for a turbocharged model is premium gasoline. However, we may occasionally come across gas stations that solely sell standard fuel rather than premium gasoline.

We can be comfortable that using typical gasoline in our Audi car will not harm it in a short time.

It’s crucial to know that our car may not have the highest performance when we use standard fuel.

If we put standard fuel in our Audi, ensure we run it until it’s empty, then refill the gas tank with premium petroleum next time.

Do All Luxury Cars Require Premium Gas?

It is no. Read our owner’s handbook to determine which octane grade is recommended for our vehicle.

Premium or regular gasoline has little effect on performance in newer, more modern engines.

Of course, it’s usually ideal to stick to the manufacturer’s instructions, but for most automobiles, either is OK.


Does Audi A4 Require Premium Gas? Yes, as the manual suggests, premium gas will help our Audi A4 thrive. Using standard fuel in the long term may damage our A4 engine and shorten the engine life.

I still use regular gas in case of the unavailability of premium gas. However, I need to refill with the premium one when available.

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