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The 2005 Honda Insight is the fifth edition of the original hybrid production car, but it has hardly changed since its U.S. introduction in December 1999. Why has this car evolved so little? Partly because the Insight is so heretically different from anything else on the road and partly because it occupies a market niche other carmakers don't cover in their U.S. lineups: simple, two-person vehicles with maximum fuel economy. The $19,330 (base) Insight commands the number one spot in the EPA's fuel economy ratings, leaving even the lauded Toyota Prius in the dust. If you're strictly looking for a fuel-efficient car for day-to-day driving, the Honda Insight is a very admirable choice.
The Honda Insight qualifies as a high-tech car solely by virtue of its drivetrain and its construction, not for its cabin luxuries, which are spartan. Wireless keys, GPS navigation, Bluetooth, speech recognition, and video screens aren't even offered as options. This car is all about extreme fuel economy and getting from point A to point B. The Insight, like the Honda Accord and Civic hybrids, is based on the company's Integrated Motor Assist (IMA) technology. As the name suggests, there's an electric motor onboard to assist the Insight's 1.0-liter, three-cylinder, 65-horsepower gas engine, revving it up with an additional 13 horsepower. Though the extra 13 horsepower sounds fairly trivial, the extra 24 pound/feet of torque that come with it make a difference. When the electric motor kicks in, the car gets a 36 percent increase in its ability to grunt.
That said, none of this makes the Insight a fast car, but it has adequate power for day-to-day driving while achieving remarkable fuel efficiency. The Environmental Protection Agency rates the continuously variable transmission-equipped Honda Insight at 57mpg for city driving and 56mpg on the highway. During our tests, we averaged 45mpg in combined driving. Honda also offers a five-speed Insight rated at an even higher 61mpg and 66mpg, city and highway, respectively.
Beyond the IMA power train, the Insight uses other novel tricks to achieve its fuel efficiency. Idle Stop technology shuts down the engine whenever you come to a stop, no matter how brief. This feature is enabled, oddly enough, by placing the climate control system into Economy mode. If you have climate control in the standard Auto mode, the car avoids shutting down so that it can keep either the heater or the air conditioner working. To restart the engine after an idle stop, just lift your foot off the brake pedal, and the electric motor instantly kick-starts the gas engine back to life. The system works very quickly, though things can get a little hectic in stop-and-go driving when the engine isn't sure if you're stopping or just slowing to a near stop. Nonetheless, the Insight always delivered when we needed it.