It is only extremely small cars (Fiat 500 and below) or luxury cars (Mercedes S-class or above) that are not allowed to tow.
Oh, and every electric car ever, apart from the X can't tow. :-(
Well, there is ONE other exception I know of, that is both small and electric. Made in Norway so they knows it needs to tow
![1603602.jpg](http://1.vgc.no/drpublish/images/article/2011/06/30/23186489/1/460x254/1603602.jpg)