Are you sure this is the case?<p>AFAIK all modern diesels are based on electronically controlled common rail which was originally designed by FIAT, even if it ended up being licensed to Bosch.<p>What I mean is, probably <i>all</i> the european auto industry invested in diesel at a time when gasoline was considered a lot worse than diesel in terms of pollution, and taxation greatly favoured diesel vs gasoline in terms of fuel price.