Much worse than that. There may be a few non-hybrid models that can get that high, but they're very uncommon. You have to remember the best selling "car" in the US is a Ford F-150. They're also exempt from CAFE as I understand it, as they're classified as light trucks rather than cars.
This almost certainly has more to do with how low our gas tax is compared to almost every other developed country though, than any direct regulation.
In Europe cars using 5 liters per 100 km (~48 miles per gallon for the SI-resistant amongst us) are very common.