The Types Of Gas A Toyota Sienna Uses (Explained) - The Driver Adviser (2023)

In this blog, we do a lot of research on your questions about any specific car. To find the answer, we’ve gone through the history of the Toyota Sienna produced since late 1997. Today we take a look at Toyota Sienna and answer what kind of fuel it requires. Although here’s a quick answer to give you a brief idea of what gas a Toyota Sienna takes:

Toyota Siennas with a 2.5L hybrid engine, 3.0L, 3.3L, or 3.5L V6 are designed to run on regular unleaded gasoline with an octane rating of 87 – 90. Premium fuel with an octane rating is not recommended because this will not deliver any benefits. However, Siennas produced after 2003 can run on premium gasoline with an octane of 91 – 92.

This isn’t the entire story of what gas the Toyota Sienna consumes. Further, we will see what Toyota Sienna’s gasoline requirements, mileage, and tank capacity, among other things, are in this text. Continue reading to learn more about Sienna’s gas intake. Let’s take a look at the Toyota Sienna’s fuel requirements per engine type:

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Also read: The Expected Mileage Of A Toyota Sienna

The Types Of Gas A Toyota Sienna Uses (Explained) - The Driver Adviser (1)

Fuel Requirements Based On Engine Type

Before diving into the specifics of the Toyota Sienna’s gasoline kinds, it’s helpful to know that there’s an easy way to find out, as this information is also displayed near the car’s fuel cap.

2021 – Present (Hybrid)

The 2021 – Present-day Toyota Sienna comes with a 2.5L hybrid gasoline engine designed to use high-quality unleaded regular gasoline with an octane rating of 87 – 90. The present Sienna’s engine is also optimized for gasoline with octane ratings 91 – 92.

2010 – 2020

The Toyota Sienna 2010 – 2019 came with a 3.5L V6 gasoline engine optimized for the use of high-quality unleaded gasoline with an octane rating of 87. Premium gasoline is not recommended for this vehicle as it would do no additional benefit over regular gasoline.

However, the Sienna is also compatible with premium gasoline that has an octane rating of 91.

2003 – 2010

The Toyota Sienna was equipped with a 3.3L V6 gasoline engine designed to run on high-quality unleaded gasoline with an octane rating of 87 from 2003 to 2010 models.

This car does not benefit from premium gasoline; hence it is not advised. The Sienna, on the other hand, can run on premium gasoline with an octane rating of 91.

1997 – 2003

The Toyota Sienna 1997 – 2003 came with a 3.0L V6 gasoline engine optimized for the usage of high-quality unleaded gasoline with an octane rating of 87. Premium gasoline is not recommended for this vehicle as it would do no additional benefit over regular gasoline.

What Types Of Gasoline Can And Can’t Be Used?

Oxygenated Gasoline Or E85

Only the usage of unleaded gasoline blended with alcohol or MTBE (methyl tertiary butyl ether), commonly referred to as oxygenated fuels, if the blended mixture fits in the given criteria:

Blends of gasoline and methanol (wood alcohol or methyl alcohol):

  • The Anti-Knock Index (AKI) must be 87 or higher.
  • The Blend shouldn’t contain more than 3% methanol.
  • The Blend should contain more than 2% co-solvents.

Blends of gasoline and ethanol (grain alcohol or ethyl alcohol):

  • The Anti-Knock Index (AKI) must be 87 or higher.
  • The Blend must contain no more than 15% ethanol.

Blends of gasoline and MTBE:

  • The Anti-Knock Index (AKI) must be 87 or higher.
  • The Blend must contain no more than 15% MTBE.

Gasoline With Additives

The quality of fuel impacts the performance, efficiency, and the service life of the engine. Therefore, using quality gasoline that the fuel supplier already blends with suitable gasoline additives that do not contain metal.

The additives provide corrosion protection, clean the fuel system, and prevent deposits on the engine. Toyota Recommends TOP TIER Detergent Gasoline.

Seasonally Adjusted Gasoline

Many fuels are blended, especially for the winter or for the summer conditions. When seasons change, Toyota suggests that you buy fuel at busy stations where the seasonal adjustment is more likely to be made earlier.

What If Engine Makes A Knocking Sound?

If the engine makes a knocking sound occasionally while driving uphill or accelerating, it is totally normal and nothing to be concerned about, but if the knocking continues, you should take it to the dealership. Heavy knocking could also be caused by using gasoline with a lower octane rating than previously recommended. If this is the case, please stop the vehicle immediately and have a garage look at the car. Continuing to drive with faulty fuel can cause serious damage to the car.

Does Toyota Sienna Have A Good Mileage?

Toyota Sienna was first introduced in 1997. Following its introduction in 1997, it went through several redesigns in 2003, 2010, a redesign in 2020 (for the 2021 model) which made the Sienna a Hybrid vehicle for its fourth generation.

We will be discussing all four generations, the type of gas used in them, and the gradual transformation of the Sienna 2021.

Also read: Absolute Best Years Of The Toyota Sienna

The First Generation

The very first generation of Toyota Sienna (XL10) in late 1997 was front-wheel drive (FWD) with a 3.0-liter V6 engine that delivered 194 hp and a fuel economy of 16 miles-per-gallon (mpg) to 22 mpg depending on city or highway driving.

EngineTransmissionCombined MPG

The Second Generation

The second generation of Toyota Sienna (XL20) was launched in early 2003. It was offered in the traditional FWD and an optional All-Wheel-Drive (AWD) with a 3.3-liter V6 engine that delivered an improved power of 210 hp and gave a fuel economy of 16 mpg 23 mpg depending on the city or highway driving.

EngineTransmissionCombined MPG

The Third Generation

The third generation of Toyota Sienna (XL30) was offered in FWD. It also came with an optional AWD with a 3.5-liter V6 engine that delivered an incredible power of 266 hp and had a fuel economy of 17 mpg in the city and 23 mpg on the highway for the FWD variant. It varied to 16 mpg in the city and 21 mpg on the highway for the AWD variant.

EngineTransmissionCombined MPG

The Fourth Generation

The fourth generation of the Toyota Sienna (XL40) was launched in November as a 2021 model; it came out as a Hybrid car with a 2.5-liter four-cylinder engine that produces a power of 245 hp giving out a fuel economy of 36 mpg in combined driving.

EngineTransmissionCombined MPG

What’s The Gas Tank Size Of A Toyota Sienna?

The 1997 – 2003 Toyota Sienna had a 20.9 gallon (79 liters) tank for gasoline, and the Sienna’s from 2004 up until 202 came with a 20 gallon (75 liters) tank. The 2021 – present-day Hybrid Sienna has an 18 gallon (68 liters) tank.

How Much Does It Cost To Fill Up Toyota Sienna To The Full Capacity?

On average, it would have cost $64.4 to fill the Toyota Sienna up until 2020 as it had been coming with a fuel tank capacity of 20 gallons, and then in the 2021 model, the fuel tank capacity was reduced to 18 gallons, so on an average, it would now cost $57.96.

Filling up the Sienna 2021 would be costliest in Hawaii at $73.92 and cheapest in Arkansas at $51.78

Also read: Toyota Sienna Transmissions: Overview, Problems, Fluids


The Types Of Gas A Toyota Sienna Uses (Explained) - The Driver Adviser (2)

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What type of gas does Toyota Sienna used? ›

You must only use unleaded gasoline. Select octane rating 87 (Research Octane Number 91) or higher. Use of unleaded gasoline with an octane rating lower than 87 may result in engine knocking.

How is the gas economy on a Toyota Sienna? ›

2022 Toyota Sienna
VehicleEPA Fuel EconomyEnergy Impact Score
2022 Toyota Sienna 2WD 2.5 L, 4 cyl, Automatic (AV-S6), Regular Gasoline
36 MPG 36 36 combined city/hwy city hwy 2.8 gal/100 mi8.3 barrels/yr
648 miles Total Range
2022 Toyota Sienna AWD 2.5 L, 4 cyl, Automatic (AV-S6), Regular Gasoline
2 more rows

How much gas does a Toyota Sienna need? ›

Compare Side-by-Side
2022 Toyota Sienna 2WD
Annual Fuel Cost*$1,500
Cost to Drive 25 Miles$2.46
Cost to Fill the Tank$64
Tank Size18.0 gallons
7 more rows

Is the Toyota Sienna a hybrid? ›

Unlike previous versions of Toyota's family van, the Sienna is offered exclusively as a hybrid.

Does the Toyota Sienna hybrid use gas? ›

The 2021 Toyota Sienna is a hybrid minivan with an EPA-estimated 36 city and 36 highway MPG. In addition to its impressive fuel efficiency, this minivan comes with an 18-gallon fuel tank, allowing you to travel up to 648 miles without needing to stop and refuel.

Do Toyotas need premium gas? ›

So, bottom line is stick to the recommended 87 Octane. That is peak efficiency for your Toyota.

What is the average fuel economy of a Toyota Sienna? ›

I averaged 31.87 miles per gallon (combined) for the journey in our long-term 2023 Toyota Sienna Platinum AWD. That's a bit below the EPA ratings of 35 mpg in the city, 36 mpg highway and 35 mpg combined, but still respectable for real-world driving.

How much gas does a Toyota Sienna hybrid use? ›

Compare Side-by-Side
2021 Toyota Sienna Hybrid AWD
EPA Fuel EconomyRegular Gasoline
35 MPG 35 36 combined city/highway city highway
2.9 gal/100mi
630 miles Total Range
8 more rows

What is the fuel economy of a 2023 Toyota Sienna LE? ›

Top Features and Tech. The hybrid powertrain that powers every 2023 Toyota Sienna has an outstanding fuel economy rating of up to 36 city/36 highway mpg with no plugging in required.

How big is a Toyota Sienna gas tank? ›

Fuel & MPG

648.0/648.0 mi. 18.0 gal.

How does Toyota Sienna hybrid charge? ›

Instead, the Toyota Hybrid System II—along with regenerative braking—will charge the battery automatically while you drive. That means no stopping to charge while you're out and no need to install a battery charger in your garage. The Sienna will take care of all that for you.

What gas does a 2017 Toyota Sienna take? ›

Compare Side-by-Side
Vehicle Specification Data
Luggage Volume
Fuel TypeRegular Gasoline
Engine DescriptorSIDI & PFI
Transmission Descriptor
9 more rows

How much does a 2023 Toyota Sienna hybrid cost? ›

The 2023 Toyota Sienna starts at $35,385. The mid-range XLE trim starts at $40,695 for either the 7-seat or 8-seat model. The XSE trim starts at $42,945, the Woodland Special Edition begins at $46,195, and the 25th Anniversary Special Edition starts at $46,670.

What year did Toyota Sienna go all hybrid? ›

The hybrid-only Sienna, introduced in 2021, is one of the most fuel-efficient seven- to eight-passenger vans on the market, with an manufacturer-estimated combined range rating of 35 miles per gallon on all-wheel drive.

Does Toyota Sienna really get 36 MPG? ›

Altogether, the 2.5-liter inline-four engine and dual electric motors produce 243 horsepower while churning out 36 mpg in the city and on the highway according to the EPA. Opting for all-wheel drive to pull you out of sticky situations will cost you an MPG in the city.

Is Toyota hybrid gas or electric? ›

With an electric motor for potentially quick launches and the power of a gas engine, Toyota hybrids often outperform their gas-only counterparts. Enjoy fuel savings and reduce your carbon footprint.

What is the difference between Toyota hybrid and gas? ›

A hybrid car has both a gas engine and an electric motor, whereas a gas-powered car only has a conventional gas engine. Hybrid cars are typically more fuel-efficient than their gas counterparts since they can switch between their gas and electric motors while being driven.

Which Toyota models require premium gas? ›

Toyota does not, by definition, require premium gas in their vehicles. The engine type and compression ratio determine which type of fuel your vehicle needs—not necessarily the make and model. The Supra has a turbocharged BMW engine. At the end of the day, fuel choice is a personal choice.

What happens if you don't put premium gas in a premium car? ›

Other things to consider: failing to use high-octane fuel in your premium vehicle could cause engine knock or pinging, which sounds like there's a large woodpecker under your hood; you could experience damage to your components; and using the wrong octant level could even void your warranty.

What happens if I put 89 instead of 87? ›

If you use a lower-than-recommended octane, fuel can combust too quickly for your engine to take full advantage of it. This combustion causes knocking, which sounds like a light pinging or rattling noise. It's a result of the air-fuel mixture in the cylinders igniting too early.

Are Toyota Siennas good on gas? ›

All 2021 Toyota Siennas come with this hybrid powertrain only, a first for the minivan segment. We grew accustomed to minivan mpg in the mid-20s but this Sienna shatters that mold. Our testing showed it capable of 40 mpg with a range over 500 miles per tank.

What is the mileage lifespan of a Toyota Sienna? ›

With only regular maintenance, Toyota Siennas can run for over 300,000 miles and 20 years with regular maintenance and component repairs.

How efficient is Toyota Sienna? ›

MPG Estimates

The 2023 Sienna gets an EPA-estimated 36 mpg in the city and 36 mpg on the highway, which is excellent fuel economy for a minivan.

How many miles can a Sienna hybrid go on a full tank? ›

648 miles

How much fuel will I save with a hybrid? ›

Hybrids consume about half as much fuel in combined cycle as a petrol-only car of comparable size and power.

What is the MPG for Toyota Sienna non hybrid? ›

Compare Side-by-Side
2022 Toyota Sienna AWD
EPA Fuel EconomyRegular Gasoline
35 MPG 35 36 combined city/highway city highway
2.9 gal/100mi
630 miles Total Range
7 more rows

Is the 2023 Sienna a plug-in hybrid? ›

There's a 2.5-liter four-cylinder and two electric motors, plus a third added to create the available all-wheel-drive system. Its battery recoups energy from the brakes and engine (it's not a plug-in hybrid like the available Pacifica Hybrid, which has all-electric range and a higher price).

Does the Honda Odyssey or the Toyota Sienna get better gas mileage? ›

The only significant win for the Sienna comes when comparing 2023 Toyota Sienna vs. 2023 Honda Odyssey MPGs. Specifically, the Odyssey delivers an EPA-estimated 28 MPG highway1 while the Sienna delivers an EPA-estimated 36 MPG highway.

Should I use 87 or 89 gas? ›

The primary consideration is whether your car requires premium gasoline. If it does, you should use 87-octane only in an emergency. Otherwise, you risk hurting your engine. If your vehicle doesn't require premium gasoline, 89-octane will work just fine.

What happens if you put 93 gas in a 87 car? ›

If you put lower-octane fuel into your high-octane vehicle, whether by mistake or to save money on gas, you'll probably notice the effects right away: things like poor fuel economy, reduced acceleration, and spark knock, which sounds like a high-pitched pinging or rattling noise.

Can I put 93 gas in my Toyota? ›

What If I Use Premium Fuel? There's no need to use premium fuel in your Toyota. However, if you choose to do so, there aren't any negative reactions that will occur. Your engine will operate properly using premium fuel without any concern.

Does premium gas give better mileage? ›

Premium gas has a higher resistance to engine knock in luxury and performance vehicles with turbochargers or high-compression engines, so you can hit that horsepower smoothly. Additionally, premium gas can increase fuel efficiency, potentially bringing better gas mileage for longer while decreasing emissions.

Is 88 gas better for your car than 87? ›

Benefits of Unleaded 88. It's good for your engine. Unleaded 88 burns cleaner and slower than regular unleaded, which has an octane rating of 87. The higher octane level helps boost horsepower and efficiency.

Can you use regular 87 gas? ›

When Can I Use Regular Gas? If your car recommends regular 87 octane gas, you're in luck. You can safely use the cheap stuff. Premium fuel won't make the engine run better or produce more power.

Is it OK to use 87 gas? ›

Some cars require premium high-octane gasoline, others just recommend it, and most cars are fine running regular 87-octane fuel (it might even be lower at high altitudes).

Which gas is better 87 or 93? ›

Regular gas is rated at 87 octane in most states, while premium gas is often rated higher at 91 or 93. Fuel with a higher octane rating can stand up to higher compression before it detonates. Essentially, the higher the octane rating, the lower the likelihood that detonation happens at the wrong time.

Does 93 get better gas mileage than 87? ›

The Federal Trade Commission recommends using regular gasoline for most standard cars and notes that: "In most cases, using a higher octane gasoline than your owner's manual recommends offers absolutely no benefit. It won't make your car perform better, go faster, get better mileage, or run cleaner."

Does 93 or 87 gas last longer? ›

No, premium gas does not last longer than regular gasoline in a fuel tank. A car owner might only consider the longevity of a car's gas if the vehicle has been sitting unused for an extended period.

Is it bad to put 89 gas instead of 93? ›

“Use premium unleaded gasoline with a posted octane rating of 91 or higher. If the octane rating is less than 91, you could damage the engine and may void your vehicle warranty.

What vehicles take 93 gas? ›

15 'Regular' Cars That Take Premium Fuel
  • Buick Envision (with 2.0L turbo)
  • Buick Regal (all models)
  • Buick Regal TourX (all models)
  • Chevrolet Equinox (with 2.0-L turbo)
  • Chevrolet Malibu (with 2.0-L turbo)
  • Fiat 500L (all models)
  • GMC Terrain (with 2.0-L turbo)
  • Honda Civic (with 1.5-L turbo)
May 5, 2020

Is it OK to mix 89 and 93 gas? ›

It really is this simple: Equal amounts of 89- and 93-octane gas gives you a tankful of 91 octane.

What is the disadvantage of premium gasoline? ›

Premium fuel costs a lot more money than standard fuel. There's no physical proof or research to show the benefits of premium fuel.

What is the best gas brand? ›

Chevron. Of America's largest nationwide chains, Chevron scores the highest points in overall customer satisfaction. Its reach spans over 7,800 stores, and while some gas stations offer convenient food marts, one location in North Hollywood goes above and beyond gasoline.

What speed gives best gas mileage? ›

The Energy Saving Trust says that the most efficient speed you can travel in a car in terms of achieving the best fuel economy is 55-65mph. Any faster, though, and the fuel efficiency decreases rapidly.


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