Another mileage issue. - Kia Forum
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post #1 of 41 (permalink) Old 11-30-2012, 11:04 PM Thread Starter
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Default Another mileage issue.

What is the break in period for a Rio5 SX Nav auto? I am at 3800 km and I have never got more than a little over 400 km per tank. My driving is 50/50 city highway. I know that there was a slight discrepancy on the fuel mileage but this is way off. According to the latest numbers from Kia.ca my car should get 7.1 city and 5.5 highway. The best I have ever seen in my car is 7.7 on the highway. When I fill the tank the computer states that I have about 560km until empty. Whenever I start the car the number plummets from what it states when I turn it off. I have driven complete tanks with both the ECO mode off and on for the entire tank and there is no appreciable difference. Today my fuel light came on at 382km on a tank of gas. I filled up and then drove 49km and now my gauge is just over 3/4. On average my computer hovers around 8.0 regardless if I am on the highway or city streets.

Is anyone else getting this poor mileage? I am not driving hard at all. I am trying to see how much mileage I can get. I traded in my 2006 Focus and I was able to get over 500km per tank without breaking a sweat. Same size gas tank.

I love my car but the mileage sucks. Bad.
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post #2 of 41 (permalink) Old 11-30-2012, 11:15 PM
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I would give it no less than 7000 km.

Besides, it depends on many factors - style you drive, gas, weather - now you got pretty cold already, so if you can get average trip fuel economy, try to reset it on hot engine and see what you get.

I am getting my Elantra now about 6.5-7.5 in city - my daily commute to work.
However, when was warmer I never reached 7.0... and I could go as low as 5.5.
Of course in L/100km.

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post #3 of 41 (permalink) Old 12-01-2012, 02:54 AM
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It's been stated many times on the forum that you really need to ignore the computer until you are sure that it is accurate.

Economy will only improve slightly after the break-in period. Most of the improvement will be due to changes in driving style. (No more "Gee Whiz" effect).

Only way to get a handle on economy is to test under standard conditions. Do a tank-full on the highway at 100km/h and see how much fuel you use. No hard acceleration, constant speed, known distance etc. etc.

If you are travelling at a fairly constant speed, take a note of the kms covered at each fuel gauge marking, and you will then be able to calibrate the gauge once you know the overall fuel use. e.g. Each division on our KIA fuel gauge is good for 70km on the highway; at 7.1 litres/100km, that's 5 litres per division. This can be confirmed by filling from particular points on the gauge. Also handy to know how much fuel is left when the light comes on (about 6 litres in many cases).

Last edited by Wry 'Cuda; 12-01-2012 at 03:08 AM.
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post #4 of 41 (permalink) Old 12-01-2012, 05:16 AM
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Unsure on the type of petrol used in Canada. Here in Australia I use 98 Octaine petrol and when i was out on the highway today doing 100kph and using the cruise control I was able to get 5.4Litres per 100ks.

I agree with the other posts that the car needs to be run in

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post #5 of 41 (permalink) Old 12-01-2012, 05:52 AM
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Your mileage is similar to what I am getting.... i have attached a spreadsheet of the actual L/100km vs. what the trip computer said. Obviously the trip computer is a bit optimistic...

So while I do agree that this is no "fuel sipper" of a car, it looks like you are getting what you should... You can't use the kia canada fuel numbers as they are not indicative of "real" driving conditions, the USA ones are much closer, and they indicated that you should expect 8.4 city, and 6.5 hwy.

I sit in crazy traffic for about 1.5 hours/day, so I'm actually pretty much right on for city driving. You can see that I did about 4000 km's of highway in the middle of my chart, there I actually beat 6.5 about 6 times! That was flat highway, hardly any wind, cruise set at 100 km/hr.

So it looks like you are likely getting what you should.... I would recommend tracking the actual mileage using an app like roadtrip or something similar to see what you are actually getting (since computer can't be trusted), but from the sounds of your km's driven on a tank, you are pretty in line with what I am getting.

There is no doubt that I was expecting the be getting a super fuel efficient car (which I wouldn't consider 8.4 city to be) but you really can't do all that much better without having a hybrid system, especially for city. I think our highway mileage is actually pretty decent.

edit: you can also see that running the car in, has had little if any effect on the mileage, I am now at 12,000 km's on the odometer.
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Last edited by LordHelmet; 12-01-2012 at 05:53 AM. Reason: additional info
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post #6 of 41 (permalink) Old 12-01-2012, 09:40 AM
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Minor note - 2006 focus has 14.0 gal gas tank and a Rio has a 11.4 gal gas tank - pretty big difference. At least from all specs I see. So dont pay attention to km per tank, just use real calculations(not computer) to compare the two cars.
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post #7 of 41 (permalink) Old 12-01-2012, 10:06 AM
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I gave up worrying about fuel efficiency a long time ago...here in the Hill Country, the ups & downs plays hell with mileage. And on long trips (interstate), going 80mph will not get the 40mpg they advertised. I *do* get that going 60-70mph, tho. I will say that the best tankful I've gotten was 399 miles (held just under 12 gallons at fill up).
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post #8 of 41 (permalink) Old 12-01-2012, 10:08 AM
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Quote:
Originally Posted by rdrfronty View Post
Minor note - 2006 focus has 14.0 gal gas tank and a Rio has a 11.4 gal gas tank - pretty big difference. At least from all specs I see. So dont pay attention to km per tank, just use real calculations(not computer) to compare the two cars.
I had a 2001 Ford Focus, on the exact same routes as I now take with my Rio (95% just work and back) over a year, I was averaging 7.8 L/100km, with the Rio under very similar conditions and routes, I am averaging about 8.4 L/100km.
And also of note is that I drive my Rio like a granny in the hopes of getting better mileage, the Focus I drove like a race car pretty much all the time!
So in real comparison, I am certain that the Rio has worse fuel mileage than my 2001 Ford Focus, and very similar power (but the focus was a standard, and rio is automatic, so that could be part of the power since i ran it almost to red-line at pretty much every shift).
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post #9 of 41 (permalink) Old 12-01-2012, 12:52 PM
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David Scoot, looks like we're the same kind of Rio owners: we were promised a very fuel efficient little marvel according to Kia, the dealer and the salesman. We let ourselves be carried away. My Rio is a "little" bit more fuel efficient now that I've added some mileage on it. But it's a long way from being that much FE. As LordHelmet cites in his post, start with these numbers: 8.4 city, and 6.5 hwy. They are much closer to reality. At least to my experience. Even with the new Kia/Hyundai numbers, 8.4 city, and 6.5 hwy are closer to what you will get with your Rio. It's a bit of disappointment to customers like me who were after a fuel efficient car and gave in to Kia advertisement but at least you own a little beauty and one which is packed with latest technology. If I may make a suggestion: rewind and picture yourself in the second or third car of your choice when you were shopping for a new car. Now, would you rather drive, let's say, a Fiesta or a Mazda 2 or a Honda Fit, for 1-3 Liters more/Km. This is the only viable way I found not to be in a perpetual state of disappointment vis-à-vis Kia concerning FE. And take the credit card Kia is sending to you...In a nutshell: wonderful piece of technology, superb styling, comfort and fulll equipped (specially your SX. Miss the heating steering) and smile in your face.
Enjoy your SX, lucky man.

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post #10 of 41 (permalink) Old 12-01-2012, 03:54 PM
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it ALL depends HOW you drive it.

I get 40-33 MPG (5.9-7.1 L/100 km) from my Elantra 2.0 L, 5 spd which is rated 33-25 MPG US (7.1-9.4). So should I complain that my car does not drink enough?

Get a ScanGauge or something similar to measure instantaneous fuel use and monitor it, and learn how to drive it.


For a comparison.
Another car we have is 2007 Rondo V6, 5spd A/T.
I get 30 MPG US (7.8) on highway, 20-25 (11.8-9.4) city which is rated 18-25 MPG US (13.1-9.4 L/100km).
My wife, on the other hand - gets 27 on highway (8.7) and 16-21 in city (14.7-11.2 L/100km)

So? Same cars, same conditions, BUT different drivers, and different STYLES.

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Last edited by PLP; 12-01-2012 at 03:58 PM.
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