The Volkswagen Touareg Hybrid sits at the bottom getting just 21 mpg in the process. The Touareg Hybrid emits not even 10 percent less global warming-related pollution when compared to its conventional counterpart.
Some hybrids increase power to the engine, whereas others will improve efficiency (reducing gas consumption). Right now technology hasn't improved to the point that a hybrid is heads and tails over the conventional counterparts. Not only that, you're probably not saving money in the long run with less gas if you have to face problems like repairs (which can be hard to complete if there are limited options for your unique car in your area).
Although we'll eventually see cars reach 60mpg owning a hybrid now is more of a luxury than a sound environmental decision that also makes good economic sense.
