Heads-up display is standard on all version sold in Europe. It is not sold on any version in the US – why?
TMPS (Tire pressure monitoring system) is available in the US (I think it is compulsory by law), but not available at all in Europe.
Fog-lights are standard in EU on all models. Not in the US.
LED headlights are available as standard equipment only on the most expensive Prius “Executive” trim in Germany (base price 28,250€). This trim also includes as standard equipment: 17″ Alloy wheels, water repellant side windows, 8 speaker stereo (JBL? not know what manufacturer’s speakers are used), BT handsfree, automatic headlights (that is *not* standard on most cars sold in EU – why not?), rain sensor, 6x CD-changer, automatically moving internal mirror (to avoid being blinded by headlight of following car), Smart-Key entry on both front doors and trunk.
Do you know any other notable differences between models sold in EU, US and Asia/Australia?

[...] EU and US, that I bumped into – a notable one is the HUD available in Europe but not in the US. Differences in trims and options Prius IV experiences Are you aware of any other differences, in other regions? Thanks, [...]
What is a HUD?
A HUD is the acronym of Head Up Display – essentially an image is projected on the windshield in such a way that seems “hovering” in front of your field of view. In the Prius sold in Europe this feature is standard and shows speed, speed + Hybrid System Indicator, or if available, navigation directions.
Head Up Display are commonly found in fighter-jets – you can read more about it here: HUD on Wikipedia
What about the “Plasmacluster” is not available in the EU? Is it possible to equip it afterwards?
Regards T.
As far as I know the Plasmacluster option is not available in the EU at all. Not even as an “aftermarket” option. But honestly I never enquired at the Toyota dealer.