Based in a survey, some hybrid cars owners answered what are the pros and cons of having a hybrid car, here are the answer in their own words:
Pros of owning a hybrid car: 
Averaging 47.68 miles per gallon! (This includes about equal time in city and highway miles.)

The federal government and some states now are giving tax refunds to hybrid owners.

Reduce carbon emissions.

Save gas.

They only make sense if you do mostly city driving. Great fuel economy in the city.

Better fuel economy, less pollution, etc.

You’ll save on gas and pollute the environment less.

I had planned to make up the difference in cost in 2 years but after careful tracking of the dollars saved, through gas mileage alone, I did it in just over 12 months
Cons of owning a hybrid car: 
Hybrids are more expensive up front and the batteries are costly and difficult to dispose of.

They just don’t have a lot of power.

The batteries they have are like 5,000 dollars, so if you keep it long enough you might have to replace it.

More expensive, batteries will have to be replaced within 5-10 years, highway fuel economy is no better than a conventional car. Bottom line is, unless you do all your driving in the city, and never exceed 45 mph, you’re better off getting a conventional small, fuel-efficient car.

Batteries are extremely toxic (not to the driver or passenger) and have HUGE disposal fees.

Bad performance(sans lexus hybrids), higher initial cost.

They cost more, they cost more, they cost more, and they get like 5 mpg better than a “regular” car.

There’s a study out some where that if you buy a hybrid as opposed to a cheaper non-hybrid gas car, it’ll take quite a few years to for the cost to be worth it.
Someone has more pros or cons of hybrid cars to add? 