Are you looking to buy a hybrid car in the near future, and trying to decide on different models? There are a number of sites which supply information in a comparative way. This one shows comparative data for all cars on a single page, and has an explanation of hybrid drive differences, along with a gas savings calculator:
http://www.comparehybridcars.net/
The US government's site is the place for the newest EPA test results, but requires a number of mouse clicks to select the model/make of a car, then more to compare cars:
www.fueleconomy.gov/feg/sbs.htm
If you are looking for photos, the MSN allows comparing different front, back, side, and interior views of two different cars of your choice:
http://autos.msn.com/research/compare/compare.aspx
and Yahoo offers 360-degree views for most cars:
http://autos.yahoo.com/
Automotive.com appears to have the most in-depth reviews:
http://www.automotive.com/
As for consumer reviews, it seems like the Edmunds site has the most (along with comparison capability):
http://www.edmunds.com/
