Featured Hyundai IONIQ - Prius competitor?

Right here, although MY2018 will start including PHEVs: Hyundai Ioniq MPG - Actual MPG from 202 Hyundai Ioniq owners

MY2016 is at 1.93 G/100 mi, MY2017 is at 1.97 G/100 mi, MY2018 is at 2.06 G/100 mi. (MY2018 has one PHEV in the results reducing consumption, but also note that the MY2018s will have only seen winter increasing consumption.)

Compare to the Prius - MY2016 at 1.89 G/100 mi, MY2017 at 2.00 G/100 mi.

 

It could be an alias model name but Fuelly is voluntary.

Bob Wilson

 

There are some odd descriptions in FUELLY - when I looked 2 yrs ago researching what car to buy, there were some combinations of model and engine which didn't exist anywhere I could find - but presumably somewhere in the world they actually did.

 

Hyundai Ioniq MPG - Actual MPG from 202 Hyundai Ioniq owners ?

 

This one is filtered to display Hybrid Ioniq only...

Hyundai Ioniq MPG - Actual MPG from 88 Hyundai Ioniq owners

 

Thanks, I was able to combine the Ioniq Blue and Prius Two data into one image:

• The Ioniq Blue was the model I test drove and the equivalent is the Prius Two ECO.
  • The distribution data suggests ~1/3d of the Prius Two ECO are higher than the Ioniq Blue
• I am not a fan of 'average' unless outliers are removed such as the top 10% and bottom 10%, 3 on each end:
  • 51.3 MPG (4.58 l/100km) - Ioniq Blue, 20 samples
    • -7% over together 55.06 MPG
  • 57.4 MPG (4.10 l/100km) - Prius Two ECO, 32 samples
    • +4% over together 55.06 MPG

There are several ways to calculate an average of two sets of data. I chose to calculate the total average for the 20 Ioniq and 32 Prius Two ECO samples to calculate a combined, average, 55.06 MPG. Then I calculated the offset of the two cars from the fleet average which gives two numbers relative to the total fleet MPG. This gives a true difference of ~11%.

Outlier removal minimizes the effects of "lead footed", "unique driving route", and "stunt drivers." To the extent Prius owners have history going back 18 years, they probably have a higher proportion of efficient drivers. Also, the traditional stepped transmission of the Ioniq may appeal to drivers inexperienced in efficient driving.

Bob Wilson

 

great analysis Bob. What was your personal experience and mpg with the two cars?

 

My test results:

• Ioniq Blue (first in Huntsville) - a 5 mile test loop, the indicated MPG clamps at 99 MPG.
• Prius Level Three with TSS-P - the 5 mile test loop only reached ~98 MPG (have to search PriusChat)

Bob Wilson

 

Yesterday, first Aussie press test of an IONIQ had a 17" PRIUS along for comparison - they said "We managed 4.1L/100km over our real-world test cycle, actually edging a Prius i-Tech we had at the same time. That’s extremely frugal."

They had a slight preference for the eCVT of PRIUS over the DCT saying "around town, a Prius is a little smoother and the interaction between the propulsion systems a touch slicker".

 

Source: 2018 Hyundai Ioniq Premium hybrid review | CarAdvice

Bob Wilson

 

The default display for Fuelly is filtering out the outliers.

 

Thanks to @Trollbait, I was able to get the 'raw' metrics which anyone can cut-and-paste into the spreadsheet of choice:

	Column 1	Column 2	Column 3
0	bucket	Blue	Eco
1	0	2
2	40	1
3	44	3
4	45	1
5	46	1
6	47	1
7	48	2
8	49	1
9	50	1
10	51	3
11	52	1
12	53	3
13	54	3
14	55	2
15	56	1
16	58	2
17	59	1
18	94	1
19	147	1
20
21	0		6
22	42		1
23	43		1
24	46		1
25	49		2
26	50		2
27	52		2
28	53		1
29	54		3
30	55		1
31	56		4
32	57		1
33	59		4
34	60		2
35	61		2
36	62		5
37	63		1
38	65		1
39	68		1
40	70		3
41	71		1

• Remove the 0 MPG bucket cars - probably data entry error
• Remove the single car buckets - outliers are likely to be single car
  • 51.6 MPG - Ioniq Blue, 18 cars (58 MPG EPA combined)
  • 58.1 MPG - Prius ECO, 29 cars (56 MPG EPA combined)

The Prius ECO owners are likely to see slightly better than EPA numbers. The Ioniq Blue owners are more likely to be challenged. This is one of those cases where you'd like to see EPA or CARB performed metrics. Over promising performance is worse than sandbagging.

Bob Wilson

ps. https://static.nhtsa.gov/odi/inv/2018/INOA-PE18003-9810.PDF

The Office of Defects Investigation (ODI) is currently aware of six crashes with significant collision related damage events involving Hyundai and Kia models where air bags failed to deploy in frontal crashes. Four such crashes involved model year (MY) 2011 Hyundai Sonatas and two others involved MY 2012 and MY 2013 Kia Fortes. The MY 2013 Forte crash occurred in Canada and the Forte was a Canadian market vehicle. ODI learned of two crashes via Vehicle Owner Questionnaires (VOQ) filed in 2015 and 2016, and all six crashes were reported via Early Warning Reporting submitted between 2012 and 2017. In total, the crashes resulted in four fatalities and six injuries.
. . .​

These models predate the Ioniq so hopefully a more robust airbag mechanism was used. Regardless, seatbelts save lives.

 

Several of these buckets are in the middle of the distribution, and thus not outliers.
This is skewing the results. There 50 Prius Two Ecos to 32 Ioniq Blues in Fuelly's database. Fewer examples means an increased likely hood of single car buckets, which increases the chance of relevant data being cut. You've cut 40% of the cars out this way(after removing the 0mpg examples). Fuelly's algorithms only cut 10% of the Ioniq and 14% of the Prius. Cutting out all those one car buckets, and leaving the multi car ones in no matter where they fall on the distribution is favoring the Prius because it happens to have more multi car buckets over the EPA rating than the Ioniq.

What was wrong with just Fuelly's results with outliers removed?

• 2016 Prius Two Eco - 55.3mpg
• 2017 Prius Two Eco - 51.3mpg
• 2017 Ioniq Blue - 50.5mpg

The 2017 cars may or may not have seen a full year yet. More may not for the Ioniqs. While there are more of them on Fuelly than the 2017 Prius, there are 50k more miles tracked for the Prius.

The Prius has gotten better at returning great fuel economy for the typical driver through the generations, but I'll note that Fuelly and Spritmonitor have the Ioniq with the absolute best.

 

this article popped up, note it is Australian, so not sure of the specs of the prius or ioniq over there

Hyundai Ioniq v Toyota Prius comparison review

has the ioniq in front, but interestingly says they are equal for economy

 

you consider how long the ironic has been around - it's incredible that they would already be so close to the Prius, considering the Prius has two decades under its belt already. If This Were the Kentucky Derby, the jockeys would definitely have the whips going full speed right now.
.

 

I saw the article - and it's link on Face(less)Book. It was by Australia's supposedly premier motoring magazine - but was pathetic. They "tested" the IONIQ in UK with a brief drive, and compared it with a test in Australia ages ago on PRIUS. I responded as follows:

"This is only ¼ the article it should be. It's useless till you do back-to-back comparison of fuel use. That's what customers of hybrids are interested in.

Jumping to conclusions about warranty is pointless. Warranty in UK has no bearing on Australia. PRIUS has 5 years in UK, only 3yrs here.

What is the Dual Clutch like in close traffic - hopefully better than some other Dual Clutches which are just terrible.

You should have called it an e-CVT - so people don't think it's just another belt-drive which is what most people assume a CVT has. It's a very clever drive through what Toyota calls Hybrid Synergy Drive - with not a belt in sight."

 

Way to go! You certainly told 'email, Alan.

 

but have they been quietly watching and learning before putting out the version 1.0 Ioniq? us owners would be the first to admit there are things we would love to change (foot operated parking brake, some features of the media system etc)

the thing is this forum tends to be US centric and you have had the Prius for longer than in Australia so you have seen more changes and developments of the prius than down under so perhaps they are more comfortable with the DCT rather than eCVT style of driving

it is interesting to see some markets favour the eCVT and some favour the DCT as there preference,

 

I did what the author wanted, I skimmed through the article looking mainly at the results rather than the detail (or lack of it)
I agree, no mention of Ioniq numbers or any indication of use / testing method there is a lot of missing information from the article, you can't say the Ioniq wins without qualifying the statement with data for both cars, did the ioniq beat the prius over the same period of time and same distance covered? did it beat it by .01 l or by 1.0 l ?

two drivers can drive the same car the same route and get totally different economy figures due to the way the brake, coast and accelerate