VW have confirmed the twocylinderdiesel for the Up! in 2013. I can see maybe a £700-1000 premium over the petrol and just not sure if the Up! really needs a derv. Except forultimate mpg, the petrol does such a decent job and pretty fuelefficienttoo. You would need a big mpg hike or do big miles to make it worthwhile in terms of extra cost of diesel and the car.
http://www.autocar.co.uk/car-news/sao-paulo-motor-show-2012/sao-paulo-show-two-cylinder-vw-confirmed
http://www.autocar.co.uk/car-news/sao-paulo-motor-show-2012/sao-paulo-show-two-cylinder-vw-confirmed