When i had my 2000 Sonata, it would get the same mileage as yours
regardless of gasoline brand. Alot depends on your driving habits and
weight your pulling. Since i lost 42 lbs, ill bet i would have gotton an
additional 1 mpg more !
If you are driving mainly city stop and go that's probably what you will get
(unless your driving habits have not changed, and you have always had better
mileage). Could it be that you are using the AC more, that would reduce
your mileage by 1-3 MPG depending on highway or city. How many miles do you
have on it? It's possible your air filter needs to be replaced (30k miles),
or your sparkplugs (60k). Other things could be PCV valve, dirty
transmission fluid (Gunk's up and makes shift take longer and more
resistance in tranny, dealer says every 30k, you could probably go 60k), do
you feel the car pulling to one side or another, or vibrating? Could be
alignment, or a bad bearing if you have noise coming from the vehicle.
Other than what I have mentioned I cant think of anything else. Good luck.
Question - I have been hearing that the alcohol in the Sam's gas does
give measurably lower milage. I not sure what the big boys are using
to replace MTBF so I wonder if it is reasonable that the difference in
price is partly that of alcohol vs the other oxygenator additive. Can
anyone else add anything usefull?
75% city and 25% highway. I have a lead foot and the A/C is always
blasting because I have the automatic climate control set at 68 degrees.
I'd say your mileage is normal. I agree with Hyundaitech, do not use
premium gas. I use the cheapest gas I can find that meets the octane
requirement of the car (87?).
Our experience with our 2000 Sonata (2.5 V6, 4-speed auto) is that it
gets very good mileage on long highway runs but not so good around
town. We're getting about 20-22 mpg in local suburban driving, but on
our last freeway cruising trip the car delivered just shy of 30 mpg. So
depending on the kind of driving you're doing your mileage might be
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