Fourth-Generation Prius: New Engine, New Design, More Fuel Efficient
January 29, 2014 12:31 PM
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It's new TNGA platform will also allow for 20 percent less vehicle weight
Toyota Motor Corp. is shedding more light on the upcoming
fourth-generation Toyota Prius
, including a whole new design and at least an 8 percent gain in fuel economy.
, Toyota is looking to make some major changes in design, manufacturing and technology for the next Prius, which is due to be released in a year.
For starters, the next-gen Prius will be the first (or one of the first) Toyota vehicles based on the automaker's latest platform, "Toyota New Global Architecture" (TNGA). TNGA aims to improved engineering and low-cost as well as flexible manufacturing.
This platform will call for a major redesign of the Prius' looks. TNGA means lower-slung vehicles with a more planted stance and lower center of gravity, which should improve handling and offer a sportier look.
One possible design direction for the next generation Prius -- the FT-Bh concept
Chris Hostetter, Toyota's vice president for strategic planning in the U.S., has said that the Prius could use a new look.
"There's an undercurrent among most people that they're ready for a new Prius look," said Hostetter. "Maybe our architecture has been a little bit similar for the last two generations."
The Prius, which was first launched in Japan in 1997 and the U.S. in 2000, had an exterior design that was altered from Toyota's Yaris sedan. The second-generation Prius was released in 2003, and it received the raked hood and windshield. From 2003 to 2004, Prius sales increased dramatically from 43,162 to 125,742. Toyota is likely hoping to do the same with a completely redesigned fourth-generation Prius.
Aside from design,
the new Prius
is getting a makeover under the hood. Its new ultra-efficient gasoline engine will achieve thermal efficiency rates above 40 percent, which is a nice boost from 38.5 percent in the current Prius.
Toyota also talked batteries in its latest Prius revelations. It’s deciding whether to use lithium ion batteries for its fourth-generation Prius, or to offer some models with lithium ion and others with nickel-metal hydride batteries. While Toyota likes the power and energy performance of lithium ion, it worries about the cost compared to nickel-metal hydride batteries.
Another possible avenue -- the
Satoshi Ogiso, managing officer in charge of global product planning at Toyota, said the automaker is pushing for at least an 8 percent improvement in fuel economy, which is slightly less than the 10 percent gains each Prius before it has received.
"Generally speaking, hybrid powertrains are more mature than before. So, the general tendency is that when a technology matures, the improvement ratio is saturating, dropping," said Ogiso. "We will do our best effort to keep that pace."
But the fact that TNGA models will cut vehicle weight will be helpful. It was reported that Toyota should be able to cut overall vehicle weight by up to 20 percent on TNGA models, which includes the new Prius.
Toyota mentioned lighter components, such as its new one-size-fits-all heating and air-conditioning unit that 20 percent smaller than the previous Prius generation's.
Jonny Lieberman, senior features editor at
, recently spoke with his sources at Toyota and
shared a bit of secret info about the next Prius
. Lieberman hinted that the next Prius would have a fuel economy rating of
. This shouldn't be too hard to achieve assuming a lighter vehicle weight, more powerful electric motor, and a possible switch from NiMH to lithium-ion batteries.
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RE: Ugly and so-so
1/29/2014 1:57:39 PM
Here's the point you're missing (actually, it seems like you're ignoring it completely in order to pretend that you have a point).
1) You may have been able to coax 50 MPG highway out of your Passat (congrats on getting 25% more mileage out of your engine). Given what we know about the variability of milage, the likelihood is that most drivers didn't get the same. Any claim you make to that effect without statistics to back it is just foolish. At the time, the maximum highway was 41. In almost 20 years, VW has only been able to improve that number to 43.
2) There's no way in hell your Passat or Rabbit got better city mileage than highway, which is becoming the more important number with how much traffic is impacting highways. Stop ignoring this number. Hybrid technology is not "gimmicky" when it can enhance your mileage to this degree. No modern diesel can accomplish the same.
3) Since our own experience seems to be what matters to you, I'll provide mine. I own a 2009 Ford Escape Hybrid- after about 90,000 miles of driving, I have yet to have ANY component break on me. My tires are in good shape, and I haven't needed a brake job (thanks regenerative braking)- and at last check I still have an estimated 15-20k miles before I have to replace either. Oil and filter changes only. I could cite a friend who had a mid 2000's VW Passat who spent $5-6 K in repairs alone in the first 3-4 years outside of regular maintenance.
4) Most cars, regardless of power train, make, and type get worse mileage than EPA in real world driving. This phenomenon is not unique to hybrids. (Coincidentally, I've bested EPA combined mileage by 6 MPG in my Escape). It depends on how you drive the vehicle.
I don't know what hybrid availability is like in the UK, but here's a list to chew on. You'll be surprised to find that the Passat isn't anywhere on the list.
And those are just a few of the criticisms I have of what seems to be your intentionally limited perspective.
RE: Ugly and so-so
1/29/2014 4:34:02 PM
I don't think that 1 of those hybrids is available in the UK/Europe but then again we will have ones that aren't in the USA.
It's very hard to compare between N.A. & Europe because not only are the cars different (e.g. the N.A. Passat is not the European Passat) but driving patterns are too (even between countries in the EU).
"It seems as though my state-funded math degree has failed me. Let the lashings commence." -- DailyTech Editor-in-Chief Kristopher Kubicki
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