Featured Hyundai IONIQ - Prius competitor?

Yeow !!
in my 60's - and yet i wasnt even born ....

love old age jokes .... i kid my dad (nearing 100 - still gardens) by saying, you're still growing oranges? if i was you - I wouldn't bother buying green bananas .....

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[QUOTE="bisco, post: 2536541, member: 5889" ]oh sure, pulse and glide works great. or do you mean a manual setting? [/QUOTE]

Hey, I'm a novice here, but I believe "use and glide"is a means to improve milage. Right now we are talking about acceleration from 0-60 and beyond. I can't see where "pulse and glide" has anything to do with the discussion.

My thought was the Ioniq's DCT has the ability to manually hold the transmission in any gear (unlike a CVT) and override the computers set shift points that maximize fuel efficiency.
But I could be wrong.

 

whoops, sorry! it never occurred to me that people might be discussing performance on priuschat.

 

Since I had the data, I did a rough integration of the velocity which gives the distance traveled each second:

• 0-8 seconds - Ioniq leads to a maximum of 0.8m which is probably due to the Ioniq engine having a running start at 1,000 rpm.
• 9-54 seconds - Prius pulls ahead with a maximum of 66.1m at seconds 49-51. At 54 seconds, it was down to 64.7m

It isn't clear that a maximum acceleration between two cars designed to be fuel efficient really tells us anything about their other capabilities. However, it is fun (says the BMW i3-REx owner.)

Bob Wilson

 

Bob - Fantastic work .... great chart.
The only thing more I have to add, is I have read that the Ioniq starts from 0 on electricity, and the ICE comes on after the vehicle is moving. Might that explain the .08 second lead?

 

Yes, the 1000 rpm at seconds 0 was a problem. BTW, I went to the original web site and had no luck getting more details about the test runs.

Bob Wilson

 

the thing is the headline PS numbers are not the full story, it is the torque figures as well, the hybrid drive of the Prius keeps the engine in the best torque area of the engine, so makes up for the slight lack of max power compared to the Ioniq

but the Ioniq's use of a DCT means the engine don't race away when you accelerate which is more appealing to some drivers when looking for a hybrid as it drive more like a std car they are used to

both the Ioniq and prius are good cars, the reliability of the Ioniq and its DCT have yet to be proven,

both cars give good gas mileage which seems pretty similar but we are only just seeing enough Ioniqs on fuelly to give any accurate sort of information, but also most on fuelly are new with tight engine, so will be another 4-6 months before we see true trends and stats

 

this is what I got on a run home from the office

93.0 mpg(UK) about 77mpg(US), I filled up as I left work, then validated it by filling up just as I neared home and putting it in fuelly

so the economy is there, drove steady 55-60mph for 177 miles

 

But unless you can verify the gas/petrol pump shut off is accurate and the tank is perfectly filled to the same top as you started with, a one run set of figures is suspect. I don't doubt your well meaning or honesty, but prefer multi tank fill figures.

My fill ups have varied by probably 20 MPG with the great followed by the horrid. It could have been me, could have been the pump shut off.

 

yep, except I track the accuracy of the trip computer to calculated mpg, and as you can see mainly 1-2% out max
I was concerned due to the minimal fuel flow the trip computer may be out further than normal

march and april are lower than normal due to very short trips as using train rather than driving to site

 

It looks to me like the Ioniq got a bit of a head start. At the 4 24/30 second mark of the video I can see the rpm start to increase. The Prius display changes at the 5 3/30 second mark. The cars are very close in this test but I'm not sure that the Ioniq would actually lead for the first 8 seconds. There are also other similar videos on Youtube that give slightly different results so it is difficult to draw any clear conclusions.

 

Until we see Argonne Labs data for both cars, I'll wait before doing more analysis.

Bob Wilson

 

When Motor Trend tested the 2016 Prius Two Eco, they got 0-30mph: 3.1 secs, 0-60mph: 9.7 secs. (See their comparison with Volt for the 0-30 value). Alex on Autos got 0-30mph: 2.9 secs, 0-60mph 9.4 secs (eco). Looking at the autowizja.pl video, I get 0-30mph (48.3kph): 3.2 secs, 0-60mph (96.56kph): 8.8 secs. For the Ioniq, 0-30mph: 3.5 secs, 0-60mph: 9.7secs.

 

Can any Gen4 Prius owners, particularly in Europe, confirm that the speedometer reads high by the amount GasperG says? The readout in my 2004 Prius agrees within 1 km/hr with GPS at 120 kph. 8 kph error seems pretty bad to me.

 

All speedometers lie to some degree. The manufacturers would rather they read high than low for liability reasons. Getting a hybrid owner driver to driver slower than thought has the plus of them being happier with the fuel economy.
8kph is less than 5mph, so I wouldn't discount it as being so.

 

The first generation Prius PHEV displays speed exactly 10% higher here. Very easy, if you want to drive 50 km/h you keep it on 55, and so on.

 

Yes, about 3 or 4% more

 

Thanks Jan and GasperG for the speedometer accuracy info. Based on that, the two cars accelerate about equally (at least up to about 70mph). The Prius does it with 122 hp to the Ioniq's 141. It looks like the Prius eCVT is good for about a 19 hp boost compared to the Ioniq 6 speed auto.

The more significant benefit the Prius has on the Ioniq is emissions. According to recent ecotests by the German Auto Club (ADAC) the Ioniq has over 3 times the Euro6 CO limit and almost 5 times the particles allowed per km. Meanwhile the Prius meets all the limits with ease and also scored lower fuel consumption (4.1 l/100km vs 5.1) and lower CO2 (114 g/km vs 136). Hyundai's use of GDI leads to higher emissions and, I predict, worse long-term reliability.