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REPORT: 115 Plug-in Toyota Prius test cars fail to crack 50 mpg average in year-long test

Sebastian Blanco — Mon, 15 Jun 2009 19:29:00 EST

When Consumer Reports tested out the Hymotion L5 plug-in Toyota Prius conversion earlier this year, they weren't overwhelmed with the results. Sure, the mileage they observed was boosted to about 67 mpg over the first 35 miles of the drive, but that didn't match the claims of 100 mpg (or more) that Hymotion and A123 Systems make about their product.

To be fair to Hymotion, their qualifies mileage talk about their plug-in Prius MPG "that can achieve up to 100 mpg for 30-40 miles" this way:

Hymotion PHEV fuel economy is based on independent testing performed at Argonne National Labs and Idaho National Labs. Actual mileage will vary based on each individual's driving style, route, traffic, climate conditions, terrain and other factors.

Unfortunately for Hymotion, there are new results of tests done at the Idaho National Laboratory now available and they might make the company a little less eager to promote the work done by INL. The lab drove two groups of Prius test vehicles (one 40-car fleet and another 75-car fleet) from early 2008 until March 2009 for almost 500,000 miles and found that the average fuel economy tallied 46 and 49 mpg, respectively. As you might expect, driving style and the battery mode (charge sustaining vs. charge depeleting) had a big impact on the figures. You can view the result data in these PDFs: 1, 2. Add it all up, and it sounds like PHEV proponents might want to take former Tesla marketing boss Darryl Siry's advice to electric vehicle manufacturers to heart.

What do you think - are plug-in hybrids the next big thing, an overhyped solution, or something in between? Drop us a line in the comments.

[Sources: Idaho National Laboratory; Hydrogen Car Revolution]

REPORT: 115 Plug-in Toyota Prius test cars fail to crack 50 mpg average in year-long test originally appeared on Autoblog on Mon, 15 Jun 2009 19:29:00 EST. Please see our terms for use of feeds.

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Toyota launches plug-in Prius hybrid in UK

Jeremy Korzeniewski — Wed, 10 Sep 2008 16:22:00 EST

Filed under: Hybrid, Green, Toyota

Click above for high-res gallery of the plug-in Prius

Toyota has been testing plug-in versions of its Prius hybrid sedan on public roads in Japan for quite some time and the models have made it Stateside for testing, as well. Now Toyota has begun testing its PHEV in the U.K. Along with EDF Energy, the Japanese automotive giant and undisputed hybrid development leader plans to run the plug-in Prius on public roadways for at least a year, starting today. As the car, with its very unfortunate paint job, is driven by EDF employees as part of the energy company's fleet of vehicles, both its capabilities and the cost savings to run the PHEV will be recorded and hopefully provide some sort of useful data to Toyota. Seriously guys, enough teasing. The real question is when Toyota will find enough reason to actually start offering the plug-in Prius for sale.

Gallery: PHEV Prius in the U.K.

[Source: Toyota]

Continue reading Toyota launches plug-in Prius hybrid in UK

Toyota launches plug-in Prius hybrid in UK originally appeared on Autoblog on Wed, 10 Sep 2008 16:22:00 EST. Please see our terms for use of feeds.

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Next-gen Prius coming in January with more power, efficiency

Dan Roth — Tue, 29 Apr 2008 11:29:00 EST

Filed under: Detroit Auto Show, Hybrid, Green, Toyota

The current Prius is baked from a refined recipe that results in a roomy, practical and efficient vehicle lurking under an eco-statement exterior, or at least we thought so. Five years on, it's still the most popular way to conspicuously consume under the guise of saving the planet. Toyota hasn't been resting on the success of its green badge of targeted consumerism, so we're going to see a new Prius at the 2009 North American International Auto Show in January, according to Toyota President Watanabe. The 3rd-generation Prius will grow in size, and engine displacement will be bumped to 1.8 liters to increase performance. Despite the increase in size and sprightliness, weight will reportedly hold steady. Further changes are in store after the launch, with plug-in and Li-Ion updates to come.

The nameplate will also move beyond a single model and become a sub-brand during the reign of Prius the III. More body styles are coming, and if you think the Prius is a roachy-looking thing, the concept hints Toyota has given us are possibly even weirder. The sub-1,000 pound 1/X might offer a glimpse at another type of Prius, though more realistically, the sad-eyed Hybrid X vannish concept suggests the way things are headed without the ridiculous pronunciation of its featherweight companion. If things go according to Toyota's plan for world domination, the Prius will become one of the pillars upon which the marque is built, next to the Corolla and Camry institutions.

Gallery: Review: 2007 Toyota Prius Touring

[Source: Auto Observer]

Next-gen Prius coming in January with more power, efficiency originally appeared on Autoblog on Tue, 29 Apr 2008 11:29:00 EST. Please see our terms for use of feeds.

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Toyota delivers pair of plug-in Prius to California universities

Dan Roth — Tue, 13 Nov 2007 11:04:00 EST

Filed under: Trends, Hybrid, Green, Toyota

Leaving no stone unturned when looking at a more efficient future, Toyota has teamed up with the Univerisity of California to further study the viability of plug-in hybrid versions of the Prius. As part of the research, Toyota donated two prototype Prius models modified for plug-in operations to the Institute of Transportation Studies at UC Berkeley and the Advanced Power and Energy Program at UC Irvine. The two university programs will study ways to measure and test fuel economy and emissions, including upstream emissions from power generation, as well as what sacrifices people are willing to make, how much they'd actively seek to plug their cars in, and what type of range and charge time they're willing to live with.

The current Prius provides a good base for the research, and didn't change drastically to pull PHEV duty. There's a larger battery pack occupying the space normally reserved for the spare tire, and the powertrain controller allows more frequent EV-mode operation, as well as running on battery to about 60 mph. The battery pack size will shrink as new technologies come online, and the limited (7 miles) range in EV mode will likely also increase. Quite an about-face from the days not too long ago when Toyota was vociferously denouncing PHEV conversions of their cockroach-shaped four-wheeled eco-statement.

Hit the jump for Toyota's press release.

Continue reading Toyota delivers pair of plug-in Prius to California universities

Toyota delivers pair of plug-in Prius to California universities originally appeared on Autoblog on Tue, 13 Nov 2007 11:04:00 EST. Please see our terms for use of feeds.

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