My Test Drive Of The Toyota Prius

Nov. 7, 2005
There's nothing like test driving the real thing. Toyota loaned me a practically brand new 2004 Prius for a couple of weeks and I proceeded to put the car through its paces (see the figure) . The results astonished even my skeptical self. Viewing the ca

There's nothing like test driving the real thing. Toyota loaned me a practically brand new 2004 Prius for a couple of weeks and I proceeded to put the car through its paces (see the figure) . The results astonished even my skeptical self.

Viewing the car from the outside makes it look like it provides little inside room. But this small and lightweight car (2890-lb curb weight) has plenty of legroom for the driver and passengers. It features a futuristic-looking dashboard, a simple "push to start" button, and a very simple gear selector lever (see the figure) . When you shift gears, it's as simple as pointing the lever into the right gear position and letting go. There's no noise or mechanical force involved. It's like pointing your computer mouse onto an icon and clicking.

One surprise was the car's silence when starting and during driving. In fact, at traffic lights or stop signs, I thought many times that the car had turned off. But it was actually the gasoline engine that turned off while the battery was providing the power.

It's been said that hybrid gasoline-electric cars don't have much acceleration capability, because they have small gasoline engines. But that's not true for this car. You can very comfortably and safely pull out of a complete stop or pass another car on the highway with no trouble. While I'm no professional racecar driver, I managed to accelerate easily to 40 to 50 mph within two to three seconds.

But the biggest surprise was virtual non-movement of the gas tank's digital gauge. The Prius has an 11.9-gallon gas tank and can easily go at least 500 miles per tankful. I got a combined street/highway gasoline figure of 47.5 mpg (mostly highway driving). This may not be the figure advertised by Toyota, but it's by far the best any hybrid car can offer.

Other Prius features include a DVD-based navigation system, a high-quality sound system, steering-wheel operated air-conditioning, air-vent setting, cruise control, window defroster, and stereo settings, as well as a host of other features.

About the only negative thing I can say is that luggage space is adequate but not as much as some people might desire. The back of the Prius can comfortably hold two large suitcases as well as a few more smaller bags. Also, because the car is deceptively quiet, it takes some time to get used to driving it.

About the Author

Roger Allan

Roger Allan is an electronics journalism veteran, and served as Electronic Design's Executive Editor for 15 of those years. He has covered just about every technology beat from semiconductors, components, packaging and power devices, to communications, test and measurement, automotive electronics, robotics, medical electronics, military electronics, robotics, and industrial electronics. His specialties include MEMS and nanoelectronics technologies. He is a contributor to the McGraw Hill Annual Encyclopedia of Science and Technology. He is also a Life Senior Member of the IEEE and holds a BSEE from New York University's School of Engineering and Science. Roger has worked for major electronics magazines besides Electronic Design, including the IEEE Spectrum, Electronics, EDN, Electronic Products, and the British New Scientist. He also has working experience in the electronics industry as a design engineer in filters, power supplies and control systems.

After his retirement from Electronic Design Magazine, He has been extensively contributing articles for Penton’s Electronic Design, Power Electronics Technology, Energy Efficiency and Technology (EE&T) and Microwaves RF Magazine, covering all of the aforementioned electronics segments as well as energy efficiency, harvesting and related technologies. He has also contributed articles to other electronics technology magazines worldwide.

He is a “jack of all trades and a master in leading-edge technologies” like MEMS, nanolectronics, autonomous vehicles, artificial intelligence, military electronics, biometrics, implantable medical devices, and energy harvesting and related technologies.

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