What do you mean it wouldn't sell well? DEF diesels in the US do go into limp mode (5 mph limit) if you ignore the empty DEF alerts. Well, they don't sell well

What do you mean it wouldn't sell well? DEF diesels in the US do go into limp mode (5 mph limit) if you ignore the empty DEF alerts. Well, they don't sell well in the US, but they didn't sell well prior to DEF, so I don't think you can pin the blame on that.