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Kia Rondo Real World MPG

208 messages,  Last post on Nov 08, 2009 at 9:07 PM

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#202 of 208 Variability in mpg by garnermike Sep 23, 2009 (11:32 am)
Replying to: 9394 (Sep 23, 2009 9:07 am) I have a 2 year old LX I4 with 21K miles. Your fuel mileage is very close to what I was getting until I passed the 15K miles odometer mark. At about that mark, my 100% city mpg improved to 21 mpg, and my 100% hwy mpg improved to 29 mpg. My mixed driving is now consistently 24-26 mpg.   But that 24-26 mpg calculation is an average based across several tanksfuls. I have since Day One gotten wide swings in individual tankful mpg computations. 17 mpg on some tankfuls; well over 30 mpg on others. I am convinced that the car never gets that bad -- or that good -- mpg. I have no idea why the car will sometimes take on more fuel or less fuel when filling up, such that I might go 50 miles before the fule gauge needle budges, or just 15 miles before it budges.   I described this all to a Kia technician. He said that it's probably a bad fuel tank level relay gismo. I nevered bothered to have it fixed, because I believe that, over a number of tankfuls, I'm getting an accurate estimate of my mpg. Replies to this message: 9394 (Sep 24, 2009 10:41 am)
#203 of 208 Re: Variability in mpg [garnermike] by 9394 Sep 24, 2009 (10:41 am)
Replying to: garnermike (Sep 23, 2009 11:32 am) exactly, the distance it takes for the fuel gauge to start dropping varies a lot, even under the same driving condition.   i will try to fillup at the same gas station, same pump to see if this problem will go away.
#204 of 208 Re: 09 Rondo I4 - first 10 tanks [9394] by mickeyrom Nov 04, 2009 (2:49 pm)
Replying to: 9394 (Sep 23, 2009 9:07 am) Don't complain about 19 in town.My 4 cyl Optima gets less than 15 city.
#205 of 208 Re: 09 Rondo I4 - first 10 tanks [9394] by mickeyrom Nov 04, 2009 (2:53 pm)
Replying to: 9394 (Sep 23, 2009 9:07 am) Be impressed my friend.My 4 cyl Optima barely gets 15 MPG in the city,Another story on the highway,consistently over 30 and a high of 40.7.
#206 of 208 Re: 09 Rondo I4 - first 10 tanks [9394] by e_net_rider Nov 05, 2009 (12:59 pm)
Replying to: 9394 (Sep 23, 2009 9:07 am) My wife's now gets 25MPG everyday driving, which is about what it was getting on straight interstate when it was newer. I think she was over 15K when it started to get better as well.   Sad that it only 1.5MPG better than other vehicle. I too traded from an Aurora V-8 to a Malibu I-4 AT6. Not yet happy with the MPG difference when the overall quality of ride is considered. I'd be much happier if gas was still $4.50/gallon. You might look at it from that view, ie, driving the same distance with both vehicles, assuming same size tank, you would currently be saving about 1 gallon per fill. That would now be only $2.50, but at old price $4.50, and if gas goes to that $6 that Dems were talking as a mark (adding tax to discourage consumption) we both will be happier with our vehicles. Replies to this message: garnermike (Nov 05, 2009 7:01 pm) 9394 (Nov 08, 2009 9:07 pm)
#207 of 208 Re: 09 Rondo I4 - first 10 tanks [e_net_rider] by garnermike Nov 05, 2009 (7:01 pm)
Replying to: e_net_rider (Nov 05, 2009 12:59 pm) It's both curious and also validating that many Rondo owners have had similar experiences to my own. At 26, 000, my Rondo ('07 LX I-4) has settled into its "calling," with mpg consistently ranging between 21 and 31 mpg, averaging right around 26. It got better after 15,000 miles, and still does a lot of inexplainable swinging between the 21 and 31 marks. I don't see the odd 15 mpg or the odd 40 mpg. Replies to this message: 9394 (Nov 08, 2009 9:07 pm)
#208 of 208 Re: 09 Rondo I4 - first 10 tanks [garnermike] by 9394 Nov 08, 2009 (9:07 pm)
Replying to: garnermike (Nov 05, 2009 7:01 pm) i have been going to the same gas station, same pump for the last few fillups, the FE swinging problem no longer exists.   also, i don't top up anymore, i estimate how much gas i can pump and slow down the pump at the last 10 percent and stop pumping at the first click.   .

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