hi arnie , i know zetec is a engine however ford named one of their focus models after the engine it is called a focus zetec and is actually a higer model then the focus lx this is why i used this as an example that persuming things isnt a good idear the n900 even though a higher model then the 5800 doesnt come with sat nav and it shouldnt be persumed it does the focus zetec is a higher model then the focus lx but yet doesnt allways come with a heated front screen like the focus lx does so you shouldnt persume that the focus allways comes witha heated screen get the jist of my theory :-) before you rubbish it maybe you should see that their is a focus called a zetc and it comes witha bigger engine , better suspension and a few other tweak in uk there are focus lx , focus zetc , focus black , focus st170 , focus rs , just to name a few sorry for going off topic in this post but the car theory was being used to demonstrate that people shouldnt persume that the n900 has certain features