Hyundai Tucson Forum banner

Premium 91 octane fuel only?!

31997 Views 62 Replies 28 Participants Last post by  garyahouse
2022 Hyundai Tucson SEL: I'm hoping someone can help with the following statement in the vehicle manual:

This is for the base engine, a naturally aspirated inline 4 cylinder (Smartstream G 2.5 GDI). I was more than surprised to see this... Hyundai dealers are advertising this trim as using regular gasoline, as does fueleconomy.gov. This statement in the manual goes beyond the more typical "premium gasoline is recommended", as it implies premium gasoline is required. I called the dealer who told me premium was recommended only, not required, and they filled the vehicle with regular the day I purchased the vehicle. But the vehicle manual should hold the "truth". My plan is to go ahead and use premium for now - can anyone tell me if this statement is indeed correct? Should I be using premium gasoline? The base Sonata has the same engine with regular gasoline only in vehicle manual, though engine may be tuned differently?
1 - 20 of 63 Posts
Hey @Kevie! Welcome to the forum! I went on Hyundai USA and Hyundai Canada to see if it's the same thing and on the Canadian site it says "Regular unleaded" is the recommendation. I think you should be fine with using regular. How long have you had your Tucson for?

2022 Hyundai Tucson SEL: I'm hoping someone can help with the following statement in the vehicle manual:

This is for the base engine, a naturally aspirated inline 4 cylinder (Smartstream G 2.5 GDI). I was more than surprised to see this... Hyundai dealers are advertising this trim as using regular gasoline, as does fueleconomy.gov. This statement in the manual goes beyond the more typical "premium gasoline is recommended", as it implies premium gasoline is required. I called the dealer who told me premium was recommended only, not required, and they filled the vehicle with regular the day I purchased the vehicle. But the vehicle manual should hold the "truth". My plan is to go ahead and use premium for now - can anyone tell me if this statement is indeed correct? Should I be using premium gasoline? The base Sonata has the same engine with regular gasoline only in vehicle manual, though engine may be tuned differently?
Hi there, there's a recall for this, there's a typo in the manual. Regular Unleaded is what it should be and not Premium Unleaded. The recall is just a sticker to cover up the typo to say Regular.
  • Like
Reactions: 1
Hey @Kevie! Welcome to the forum! I went on Hyundai USA and Hyundai Canada to see if it's the same thing and on the Canadian site it says "Regular unleaded" is the recommendation. I think you should be fine with using regular. How long have you had your Tucson for?

Hi
Hi there, there's a recall for this, there's a typo in the manual. Regular Unleaded is what it should be and not Premium Unleaded. The recall is just a sticker to cover up the typo to say Regular.
Interesting. Still waiting for this "recall' notification. I think this is a MAJOR issue where Hyundai cannot even advise correctly what fuels their engines. I sure hope this "type O" is the least of the "type o's". Ridiculous!. So much for attention to detail on the most important aspect of the vehicle!
Hi

Interesting. Still waiting for this "recall' notification. I think this is a MAJOR issue where Hyundai cannot even advise correctly what fuels their engines. I sure hope this "type O" is the least of the "type o's". Ridiculous!. So much for attention to detail on the most important aspect of the vehicle!
Is there any documentation to support your comment on there being a recall? I don't believe anything unless Hyundai sends such notice and I haven't received anything. Manual says 91 octane or higher. If engine fails, I would love to know your defense other than "maybe, or I think, or something is the mail as far as recall".
Hi

Interesting. Still waiting for this "recall' notification. I think this is a MAJOR issue where Hyundai cannot even advise correctly what fuels their engines. I sure hope this "type O" is the least of the "type o's". Ridiculous!. So much for attention to detail on the most important aspect of the vehicle!
When I first read the manual, I thought to myself, no Way this car takes premium, it's not even turbo charge high performance vehicle so I decided to call Hyundai HQ in California, the rep. says it was a misprint in the manual and at the time she says they have a pending recall for this and wait for the recall notice to be sent out. ,
Ya, I would think this would be PRIORITY for Hyundai to correct this or clarify. Most important aspect of the vehicle is knowing what fuel it requires. When the engine goes belly up, what defense do you have when Hyundai denies the warranty because you put the wrong fuel in? THE MANUAL takes precedence unless there is something in writing from Hyundai stating otherwise in the form of a recall correction to their bible/manual. So until then, I'll protect my warranty and do what the manual says. 91 premium ONLY
So I wrote Hyundai consumer care and here is there reply:
"Based upon the information you provided, the service department at your local Hyundai dealership would be in the best position to help you with preferred fuel type."

🤣🤣😂 Call my service department? Ya, I did just that, and what did those clowns tell me? "Well if the engine is running fine, and there is no knocking or check engine lights you'll be fine running regular unleaded". You really think they would care or know? They would LOVE to see me getting my engine repaired by them! 🤑🤑 So......that's Hyundai's response. THEY don't even know!!🤣😂
Below is my open recall campaign for the sticker- my local dealer says just come in whenever I get a chance and bring in my manual so they can cover up the misprint.

Rectangle Font Material property Parallel Electric blue
See less See more
@Snowdog82 Interesting! Thanks for posting that! 👍
I just ran my vin thru to recall campaign. Says no open campaigns for my vin.

Follow up: Just wanted to post this for the information to others.....I called Hyundai Customer Care and had long discussion with them about this "91 Octane requirement". She stated that yes, there has been a recall sticker to change the wording in the manual to 87 octane for SOME of the 2022 Tucsons, BUT....when running my VIN she advised me that there is NO recall pertaining to my VIN and the "required 91 octane" as stated in my manual is what needs to be followed. So.....regardless or what anyone says or what any Hyundai service "says", I wouldn't rely on anything other than what's in the manual to cover my ass. I know how companies loooove to deny warranty claims, and a customer putting the wrong fuel in I'm sure would give them great reason to deny claim. Just sayin....
Follow up: Just wanted to post this for the information to others.....I called Hyundai Customer Care and had long discussion with them about this "91 Octane requirement". She stated that yes, there has been a recall sticker to change the wording in the manual to 87 octane for SOME of the 2022 Tucsons, BUT....when running my VIN she advised me that there is NO recall pertaining to my VIN and the "required 91 octane" as stated in my manual is what needs to be followed. So.....regardless or what anyone says or what any Hyundai service "says", I wouldn't rely on anything other than what's in the manual to cover my ass. I know how companies loooove to deny warranty claims, and a customer putting the wrong fuel in I'm sure would give them great reason to deny claim. Just sayin....
Yes, definitely call customer care to confirm and be certain to ensure you are putting in the correct grade on your vehicle so no one will void the warranty. I have a non-hybrid SEL trim level so for my car it's just regular Unleaded.
Yes, definitely call customer care to confirm and be certain to ensure you are putting in the correct grade on your vehicle so no one will void the warranty. I have a non-hybrid SEL trim level so for my car it's just regular Unleaded.
Yep, I have the non-hybrid SEL as well.
2022 Hyundai Tucson SEL: I'm hoping someone can help with the following statement in the vehicle manual:

This is for the base engine, a naturally aspirated inline 4 cylinder (Smartstream G 2.5 GDI). I was more than surprised to see this... Hyundai dealers are advertising this trim as using regular gasoline, as does fueleconomy.gov. This statement in the manual goes beyond the more typical "premium gasoline is recommended", as it implies premium gasoline is required. I called the dealer who told me premium was recommended only, not required, and they filled the vehicle with regular the day I purchased the vehicle. But the vehicle manual should hold the "truth". My plan is to go ahead and use premium for now - can anyone tell me if this statement is indeed correct? Should I be using premium gasoline? The base Sonata has the same engine with regular gasoline only in vehicle manual, though engine may be tuned differently?
I chatted with the Service Manager at my dealer and he suggested using regular unleaded even though I have the hybrid turbo engine. He said the U.S. government required new cars to be tuned to use regular unleaded and Hyundai has done that. He did say, if I drove at faster than highway speeds or liked to regularly drive with quick acceleration, the mid-grade may help a little, but for everyday driving to stick with regular unleaded. I switched from mid-grade to regular and have not seen any difference in performance.
  • Like
Reactions: 1
I chatted with the Service Manager at my dealer and he suggested using regular unleaded even though I have the hybrid turbo engine. He said the U.S. government required new cars to be tuned to use regular unleaded and Hyundai has done that. He did say, if I drove at faster than highway speeds or liked to regularly drive with quick acceleration, the mid-grade may help a little, but for everyday driving to stick with regular unleaded. I switched from mid-grade to regular and have not seen any difference in performance.
"he said"....that is the problem. A service manager at a dealer is the last person I would ask. I would get his statement in writing and signed! That's the problem with these service centers/dealers. All talk and blab, blab, but nothing to support it. He would LOVE to see your vehicle in for service! There is nothing in writing from Hyundai supporting this in their manual. Manual/bible says 91 octane or higher. Anything other is reason to decline warranty.
I checked on line and found out that the compression ratio for the 2.5 engine is 13:1.
Seem like you would need more than 87 octane for this engine.
I have a 2022 Hybrid Tucson (just got it last week) and it says on page 1-5 in my owner's manual:
"Your new vehicle is designed to use only unleaded fuel having an octane number((R+M)/2) of 87 (Research Octane Number 91) or higher. (Do not use methanol blended fuels)"

Being in North America, we don't use RON at our pumps so clearly it means my car takes regular unleaded. Maybe they have updated the owner's manual now for new deliveries to state this when there was a misprint in the first batch as per OP?

EDIT: Wanted to add this is the 1.6T and not the 2.5 but would imagine the NA engine would be same if the turbo doesn't need premium.
My manual , 2.5 engine states...(R+M)/2) of 91 (Research Octane Number 95) or higher. Or higher? Why would you want to run a higher octane if the car doesnt need it? Maybe better performance? The 1.6 turbo is only 10.5:1 compression ratio and might run just fine on 87 octane.
PROBLEM SOLVED!!
Crazy......the ONLINE manual in the Bluelink app for my vehicle states 91 octane...then I get to reading my PRINTED book manual that came with my vehicle and it states 87 octane! I'LL BE DIPPED!!! So.....Hyundai, let's get your details together and BE CONSISTANT with one of the most important aspects to making the engine run!!
1 - 20 of 63 Posts
Top