I think Hybrid cars put off a bit more than regular cars. It would be in the ELF range I believe, which isn't as much of a problem IMO as EMF in the 2.4 GHz range, like from your cell phone and router. However, none of it is really good for you. I'll look into how much it puts off. I know electric cars put off a ton. Jack Kruse tried to go into a dealership with a Gauss meter and they turned him away.
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This one tells you what's up pretty good. Hard to say how bad basically. You're getting bombarded by all kinds of EMF in a car. It's crazy.