I got this new 2010 2Dr Accent AT hatchback about a month now, and the mpg is really sucks... only 24 mpg!!! My average speed is between 45 - 55. The service rep said, it will be better when it goes several thousand miles later. I think it is a lie.... Is there anyone happen to the same thing? Will it ever goes up to 33 -36mpg after 3000 miles?

Kind of disappointed to this gas issues.

 

Yes, mileage will increase as the engine breaks in and loosens up. What kind of driving do you do? City/highway? How do you accelerare? Are you using the A/C a lot? Are the tires at the correct air pressure? Lots of things can cause bad mileage.

 

Well, I am now more in city than hwy. A/C is turn-on of course in FL. it is hot as hell in here. lol The tires is 32 pound all around.

 

City ESTIMATED fuel economy for the 2010 Accent hatchback with an automatic is 27-mpg (source). Throw in heavy A/C usage and 24-mpg isn't out of the ordinary.

 

I bought a 2009 Accent GLS AT in January. It had 29,000 miles when I bought it. My gas mileage has run between 24 and 30, mostly in the 26-28 range. I think this car really sucks the gas at idle, when you allow it to warm up a bit to defrost the windows (and if you put it on 'defrost' the AC runs automatically). There is no rhyme or reason for the mileage going up or down. I got the 24 on a mostly highway trip and the 30 doing mostly 7 mile commutes to work. The advertised mileage was between 29 and 35 for this car when I researched it. I love the car, and it's definitely better on gas than the Ram quad cab or the Outback I drove before it, but it has somewhat disappointed me in the mileage department. I've started to wonder if the variable valve timing is off a bit or if something else is wrong with it.

 

An update after 6 month driving this accent 2010. The gas mileage haven't change a bit, still sucks! Right now is about 8000 miles. Nothing has change, still 24mpg with AC on. 27mpg without AC. There are no such a thing called "Break-in" period, according to a car expert, every engine has tested and run in the factory over 5000 miles before coming out to the sales lot. Break-in is a lie from the salesman.

 

FYI, 27-mpg is exactly what the Accent hatchback with an automatic is rated for city driving. (SOURCE) So the mileage doesn't suck, it's NORMAL. If you wanted a car with better economy, you should have done better research.


Yes there is. While it's nothing overly elaborate, there is a break-in procedure that is explained in the owners manual (have you read yours?). See page 1-3:




100% BS

There is no way Hyundai (or any other car company) runs every single engine over 5,000 miles before you buy it. Just not true. They take a few cars off the line to test them and do quality control on but those are not sold to the public.

Why would anyone buy a new car that has an engine with 5,000 miles on it? Not true. The engines are assembled and installed without being run. They are then started for the first time and driven less than 2 miles between the assembly plant and any transportation to get them to the dealer.

 

On every car I owned, including my Accent, running the a/c reduces mpgs by 2-3 mpgs, esp in city driving. Since the weather here is now warmer (and super muggy), I'm now getting 28 mpg instead of the usual 30mpgs around town (I have the manual trans). The first 2 tanks (I bought mine new) returned only 26mpgs (not using a/c). If I wanted more mpgs, I would have bought a hybrid, but I didn't want to spend twice as much for a new car.

 

I am one of those people who reads the book front to back, and I am DEFINITELY adhering to the break-in ritual. As a result I am getting 33-34 mpg in Alabama hot weather, and look forward to it getting better once the pistons seal and the engine settles. As an A&P mechanic who works on new and used aircraft engines, I can promise that engine break-in is very much a fact.

 

My Gas mpg is 28 to 34 average, due to A/C turn on because of hot weather, its reduces by 3 or 4 mpg.