What Car? says...
When the Fiat Ducato was launched, it very much slid under the radar. There was no fanfare and no gimmicks. It just arrived and began delivering. That’s part of the reason why the Ducato has become such a phenomenal success in the large van sector – not that you’ll notice many of them around, and that’s because it's most commonly used as a motorhome.
It’s also a shared product with the Peugeot Boxer and Citroën Relay. They, too, are popular in the motorhome sector, but it’s the Ducato that has stolen a march on its rivals. That’s not to say it doesn’t make a competent van too. A high payload capacity is, after all, one of the reasons why so many body builders use vans for motorhomes, the other being that, unlike the Peugeot and the Citroën, the Fiat comes with a choice of engines and power outputs.