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
1/30/2014 10:59:05 AM
You're very confused if you think diesels don't command higher resale prices. At least go on the internet and do a little research before making such an absurd claim. Especially in higher mileage cars, diesels can command 100% or more price premium over the same gasoline version car.
Same for comfort/size. What does the vehicle size have to do with fuel type? My Mercedes E class diesel is very large and comfortable, significantly more so than any toyota.
Convenience? Not sure what you were going for there. Manual transmission has nothing to do with a diesel engine.
Performance? Diesels destroy hybrids. Look at a Mercedes E320 Bluetec or BMW 335d. The performance numbers are *faster* than the same model with gasoline engine. Have you even driven one? I doubt it. Modern diesels are crushingly powerful. A Pious on the other hand exudes wimpyness.
Purchase price? Absolutely diesel wins. The additional cost of a diesel model is far less than the additional cost of a hybrid.
RE: Ugly and so-so
1/30/2014 10:42:52 PM
Please get your facts straight. The 335d was slower, by a good margin, than a 335i in 0-60, 5-60, 0-100, and the 1/4 mile. It was faster than a 328i, but it is the same price as a 335i. The current 328i is so much faster than the 328d that its laughable. the closest any diesel comes to its gasoline equivalent is the M550d xdrive, which is only slightly slower than a 550i, but not sold in the US.
And fundamentally, the back and forth in the comments of is diesel better than hybrid is broken. Which one is better is purely down to what your driving habits look like. If you do heavy city driving, or get stuck in stop and go traffic all the time, a hybrid is better for you. If you do mostly highway driving, you should probably look at a diesel.
I think a diesel hybrid would actually be the best option, as it gives you the economy of a diesel in low load situations with the regen of a hybrid in stop and go.
Having said all that, I'd still only buy a diesel or a hybrid if someone put a gun to my head and told me those were my only choices, unless we are talking about an i8, P1, 918, or LaFerrari. Maybe the M550d. I'd consider a 335d if it came with a manual though.
"What would I do? I'd shut it down and give the money back to the shareholders." -- Michael Dell, after being asked what to do with Apple Computer in 1997
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