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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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What is this discussion about? Kia Rondo, Wagon


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#92 of 208
Re: More on the Rondo mpg mystery [garnermike] by crewzin
Nov 11, 2007 (6:14 pm)
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Replying to: garnermike (Nov 11, 2007 5:52 pm)

Funny you should bring that up. I just took a 724 mile trip up to see my son in Virginia. I have to stop 3 times for gas because I never let the tank go below 1/4 full. Filled the Rondo up right before leaving and what I've noticed is that sometimes I can go a little over 100 miles before the gas needle drops below the full mark and at other times, the needle drops below the full with only 50-60 miles traveled. I too believe you can't always fill the tank up to the same full mark all the time.
#93 of 208
Yup. That's exactly my experience too by garnermike
Nov 15, 2007 (11:43 am)
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Replying to: crewzin (Nov 11, 2007 6:14 pm)

I am working on one of those "fuller tanks now". Got 90 miles before the needle budged down to the full mark. It then goes quickly between Full and 3/4s. My mileage for this tank will be very good. Then I'll get a weak gas pump and I can't top it off like I can with a forceful pump, and my mileage will suck.
#94 of 208
Pessimistic Fuel Gauge? by flipb
Nov 15, 2007 (7:49 pm)
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I've had a 4-cyl '07 Rondo LX since February. I haven't seen the wild swings in MPG mentioned by others here - I've consistently averaged mid-20's, at best around 27.5 and 21-22 at worst.
 
However, I recently let the gauge get very low on a long highway trip, including 30+ miles driven with the low fuel light glowing. Given my 8,000 miles of experience with this car, I was very confident based on the miles driven that I wasn't really at risk of running out of gas. Sure enough, even after that experience, it took about 12.5 gallons. On average, I'm putting in about 11 gallons at each fill-up, and I always wait for the needle to get awfully close to "E". According to Edmunds, it's got a 15.8 gallon tank. Doesn't it seem pretty pessimistic for the fuel gauge to hit "E" when there's 3-4 gallons (~75-100 miles) left in the tank?
 
Anybody else notice this?
 
Also, I found it interesting that the Rondo is EPA-rated 21/29, while my wife's '06 Hyundai Sonata is rated 24/33. The two cars have the same engine and transmission, and curb weights are within 75lb of one another. In reality, my wife and I get very similar mileage - if anything, the Rondo uses less fuel than the Sonata, but that's largely because of differences in our city/hwy mix.
#95 of 208
I'd say that your car is an exception by garnermike
Nov 16, 2007 (4:21 am)
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Replying to: flipb (Nov 15, 2007 7:49 pm)

If you are only able to pump 11 gallons from an "E" indicator, I'd say something is "different" (not necessarily broken) about your Rondo---the gauge, the sender, the tank, or the fill pipe, etc. Only pumping 12.5 gals after driving 30+ miles under low fuel warning is strange. I've filled up with 14 gals and my light hadn't come on yet.
 
One would think the Sonata would clearly out-mpg the Rondo, given the EPA rating and the differences in slipstream profile (drag efficiency).
#96 of 208
Re: I'd say that your car is an exception [garnermike] by flipb
Nov 16, 2007 (1:53 pm)
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Replying to: garnermike (Nov 16, 2007 4:21 am)

Interesting that others haven't had the same experience. I guess fuel guage/float/sensor equipment is one thing that's probably difficult to calibrate with precise consistency at the factory. I've rarely gone more than 300 miles on a tank because the gauge has me constantly second-guessing myself, but I might start waiting for the trip odometer to get closer to 350.
 
On the subject of inaccurate gauges, I also suspect that my speedometer is a little off. Whenever I pass one of those stationary radar installations where it shows your speed, I always find that the speedo shows 3-5mph higher than the radar. I actually don't mind this at all - I drive 70-75 (indicated) on the highway, never worried that I'll get a speeding ticket but also never feeling like I'm going too slow.
 
Regarding the Sonata, we've been fairly disappointed with its fuel economy. But my wife's commute is an 8-mile drive that takes 30 minutes in rush-hour traffic, so that probably explains a lot.
#97 of 208
Manual Shifting and MPG by zklopman
Nov 30, 2007 (7:33 am)
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I've driven over 6000 miles (mixed highway/city/traffic jams/rural, with and withuot AC, sometimes with open moonroof) in an EX V6 and always got a consistent 20-22 mpg (American). I've tried to use the manual shift, and discovered that it will not allow me to go to 5th gear under 38 mph (However, if you are already at 5th, it will stay there until around 30 mph). We have a lot of flat rural roads, which are limited by signs to 30-35 mph. So instead of driving of 5th, it rides on 4th, which I assume contributes to the lousy gas performance. A similar behavior is also for 4th, although at lower speeds. Anyone else noticed these, or am I mistaken?
#98 of 208
Re: Changing fuel efficiency [rbosborne] by bmorse
Jan 08, 2008 (6:14 pm)
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Replying to: rbosborne (Nov 07, 2007 6:57 pm)

I've had exactly the same experience. We got our Rondo in June (EX V6). Mileage started out in the high 20's, and has been dropping steadily since. The last couple months we've averaged 17 - 19 MPG in mixed driving. We are very careful drivers in terms of gas consumption, so I would expect to be hitting the upper end of the expected mileage. Haven't brought it into the dealer yet, but from the other postings, I'm not expecting them to be much help.
#99 of 208
Re: Changing fuel efficiency [bmorse] by garnermike
Jan 08, 2008 (6:53 pm)
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Replying to: bmorse (Jan 08, 2008 6:14 pm)

At 3000 miles, my 2007 4-cyl Rondo is still delivering good all-around mpg (20-30 mpg, depending on the rato of city to hwy driving I do. but the issue of declining mpg over time rang a bell with me, so let me relate something.
 
My daughter bought a new 2006 Honda Civic in 6/2006. She began by getting amazing mpg 30-41 in city/hwy driving (and it's not a hybrid). Recently at 10,000 miles, she could not top 34 mpg on straight hwy driving. I told her to run the best fuel injector cleaner she could fine at Autozone through two consecutive tankfuls. Problem has been solved. I experienced the very same thing with my 2006 Vibe,
 
Before you rely on the dealer to fix things, try this. Given the amount of soot that collects at the tailpipe tips on the Rondo, I plan to do the same if/when its mpg drops.
#100 of 208
Re: Mileage & Cargo Report [sqo] by e_net_rider
Jan 20, 2008 (9:24 am)
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Replying to: sqo (Jul 05, 2007 9:04 am)

Morons indeed. But when gas makes a sudden big jump it is surprising how many become sensible drivers. And somebody needs to teach them sensible driving. Where is the cop?
#101 of 208
Not what expected by e_net_rider
Jan 20, 2008 (9:37 am)
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On 3000 mile roadtrip, averaged about 26 MPG. This is I-4 in '07.
Rather disappointed since I got that or better in my old Aurora with V-8, much heavier vehicle, on same trip and it is much better in ride, handling, quiet, and voom voom, performance (250 HP).
 
Would readers please check and post back if you have full time engine braking, got to hurt milage. You can tell when you take foot off accelerator and engine does not fall back to idle RPM or bump into neutral and see if you coast easier.

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