IONIQ to battle PRIUS head to head

[aerohead]

Hyundai has released it's Cd 0.24 IONIQ hybrid in Korea to battle Toyota's Cd 0.24 Prius for market supremacy.They're claiming 57 mpg vs 52 mpg for the PRIUS.
Hyundai IONIQ Hybrid Launched in Korea - News - NDTV CarAndBike.com
Notice the roofline,side mirror stalks,aero wheels,and mostly-fake grille inlet.

[oldtamiyaphile]

Prius (G2) claims 478Nm torque combined, Hyundai claims 265Nm. I love the low end torque of the Prius.

Also the Hyundai comes with Lithium cells across the board, so really needs to be compared to the Prius Eco at 56 MPG.

[Vman455]

To my knowledge, Toyota has never published a torque output for the electric motor and ICE combined, only a power output. For the Gen 3, max torque of MG2 was 153 lb-ft (207 Nm), and of the ICE was 105 lb-ft (142 Nm); there's no way the system is putting out anywhere close to 500 Nm. One person over at Priuschat has dynoed his Gen 2, and saw 119 lb-ft max at the wheels. For Gen 4, Toyota is claiming a reduction in MG2 torque, to 120 lb-ft, and ICE torque unchanged.

For 2016, every Prius but the Two comes with a lithium-ion battery, but only the Two Eco is rated 56mpg combined.

[oldtamiyaphile]

Contemporary road tests cited 400Nm for the electric motor and 478Nm 'at speeds up to 22km/h' combined for the G2 Prius - that's fairly specific info if it didn't come from Toyota. Remember that a dyno vs 'flywheel' output can loose around 30% and that dyno pulls usually aren't done at such low speeds. I had a van with 400Nm and at low speeds the Prius feels about the same.

If you Google these figures there are plenty of references to those numbers.

It's my understanding that the Nimh battery continues in the basic Prius.

[Vman455]

Originally Posted by oldtamiyaphile

It's my understanding that the Nimh battery continues in the basic Prius.

Yes, but only in the base Two. The Three, Three Touring, Four, and Four Touring all have Li-ion batteries and are rated 54/50/52--not sure why it would only be valid to compare the Ioniq to the Two Eco based on battery chemistry alone.

[oldtamiyaphile]

I don't know what specs you guys are getting but I bet we'll only see two of them.

But that raises the question, what makes the ECO trim so much better if it's not the battery and we can't really see anything else that's changed?

[Vman455]

That's what a lot of people are wondering. The only information Toyota has given is that the Two Eco weighs 3010 lbs (65 less than Two, 40 less than Three and Four, 70 less than Three Touring and Four Touring), has no rear wiper, has the lithium battery, and has a different windshield that filters more solar radiation.

[oldtamiyaphile]

Originally Posted by Vman455

That's what a lot of people are wondering. The only information Toyota has given is that the Two Eco weighs 3010 lbs (65 less than Two, 40 less than Three and Four, 70 less than Three Touring and Four Touring), has no rear wiper, has the lithium battery, and has a different windshield that filters more solar radiation.

Although I know EPA tests take into account A/C usage (NEDC do not), they're still done indoors so I can't imaging the different windscreen showing up in official testing(?).

[aerohead]

Originally Posted by oldtamiyaphile

Although I know EPA tests take into account A/C usage (NEDC do not), they're still done indoors so I can't imaging the different windscreen showing up in official testing(?).

Toyota would be required to provide the aerodynamic loading (plus the rolling resistance) for the dynamometer to simulate actual on road loading during the EPA dyno testing.The rear axles wouldn't be spinning,so there'd be a fudge factor to compensate for that.