Newbie Questions! Fuel, maintenance and more. - Hyundai Elantra Forum
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post #1 of 2 (permalink) Old 10-23-2019, 01:10 AM Thread Starter
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Newbie Questions! Fuel, maintenance and more.


Just got a 2011 Elantra GLS, really like it so far! I have a few questions though and thought this would be a good place to start.

1.) the owners manual calls for regular 87 octane but most pumps around me have 85 as regular, not 87. Is there any difference or do I need to jump up to the 91 they carry?

2.) my car only has 33k on it, the previous owner clearly never drove it, what maintenance items would you do? Spark plugs because of the age even though it has low miles? (I already did an oil change and am running a fuel system cleaner through it just in case)

3.) what are some must knows about this car that I should make sure to watch for and stay on top of?

4.) what are the best mods you’ve done to your Elantra? Thinking of a window tint, some seat covers, already put a K & N air intake in so I don’t have to buy cheep ones every few thousand miles, but anything else that made it better?

Thanks for the help, sorry for the newbie questions!
Kieran Steele is offline  
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post #2 of 2 (permalink) Old 11-26-2019, 08:06 PM
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1) For my 2017, I only went with Plus (91 octane), if only to get a little better grade of gas that scraping the bottom. I got much better mpg as well with the higher octane, but super (93 octane) got me no returns and emptied my wallet faster.

2) Maintenance, I would certainly go with a minor tune-up just to be sure. Spark Plugs, change oil and filter, run some injector cleaner or seafoam through it (right before the oil change).

3) can't help here

4) Window tint is a must for most climates. Seat covers if they are worn. Floor mats, if you don't have them already. Correct windshield cover. If it has wheel covers, then look at rims and tires and move up to the 16in wheels to future-proof it a little. 15in wheels are on the way out, and the tires are getting more expensive to get the quieter rides.

Good choice on the K&N, but just be aware that the "performance gains" are all smoke and mirrors at this level of car. Still a VERY fun car, with really good mpg and plenty of room inside. Biggest upgrade I can say, is to Enjoy!!! the car.

2020 Elantra Sport Silver, stock
avg 33mpg

Deceased - 2017 Elantra Value Black, avg 43mpg
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