What gas do you use for the Sienna 2025 XLE… 87 or 93?

I just bought a Sienna 2025 XLE and wondered what gas everyone else uses. Is 87 fine, or should I be going for 93?

I always use regular 87.

The manual says 87 octane is what you need.

Flint said:
The manual says 87 octane is what you need.

You can use a higher octane, but it won’t give better performance or mileage since the engine isn’t made for it.

I stick to whatever the manual recommends. No need to guess.

87 for sure.

Every car I’ve owned, I just use the gas it’s made for. Sienna’s engine is made for 87.

Using 93 is like burning extra cash for no reason.

Wait, people actually use premium in a Sienna?

Ari said:
Wait, people actually use premium in a Sienna?

I did it once today for fun because I had a fuel discount. I doubt it made any difference though.

I drive 40k miles a year in mine and have never used anything other than 87.

How do you spend $45-50k on a car and not ask the dealer or salesperson about the fuel? I’d make sure to know this stuff before buying.

Blend said:
How do you spend $45-50k on a car and not ask the dealer or salesperson about the fuel? I’d make sure to know this stuff before buying.

You’ve got a point.

If premium is free, go for it. Otherwise, stick to regular.

I use 85.

87 is all you need.

I was in PA and found a cheaper ethanol fuel. Googled it and found it runs fine in Toyota engines now.

Torin said:
I was in PA and found a cheaper ethanol fuel. Googled it and found it runs fine in Toyota engines now.

The Sienna isn’t flex-fuel. E15 might be okay, but E85 can harm the fuel system long term. The engine can burn it, but the system isn’t made to handle it.

@Shaye
Toyota says E15 is okay.

Torin said:
@Shaye
Toyota says E15 is okay.

Pretty sure the fuel cap says not to do that.