Just wondering if you could share your research & reasons for going with the fiat powered motorhome platform. Also your impressions to date adv/dis of the motorhome vs caravan?
The platform was not a really crucial issue for us, for a few reasons:
1) I'm gentle on the engine/gearbox anyway, and I service it frequently, so the thing is going to last regardless
2) Iveco apparently use a Fiat engine as well, but are rear-wheel drive which might have been better under some circumstances but this limits the vehicle (see below)
3) The preferred layout we had in mind wasn't available from anyone other than Avan, so the previous two points added up to a "let's buy it" when we found it
Another advantage in going Fiat: the front wheel drive that we have is purely a engine+drivetrain, cabin+seats and a fuel tank. It needs a rear chassis on which the motorhome is built. This allows for a longer frame with the rear wheels set wider apart providing less roll tendency. This allowed for more space inside - giving us a full bedroom, bathroom, kitchen and dining area, with a kerb mass of 3450kg and a GVM of 4490kg. We estimate that we're hauling (with us, full fuel tank, full water tank, food, clothing etc) about 700-750kg which is about right - the weighbridge showed 4200kg (4.20T, but could have been 4.205).
As for motorhome vs caravan: they are different beasts. With the caravan, we could plant it in a caravan park and drive off exploring places that you wouldn't take the caravan or a motorhome. You also don't have to battle as much in shopping centres and if you're trying to park on the street without the caravan it's much easier.
The motorhome will NOT go on 4WD tracks and we had to avoid a trip to Corinna TAS because the road had been damaged enough in a storm to require high-clearance 4WD. However, in a storm we have an advantage over a caravan - nobody gets wet getting into the camper part. Ours is a walk-through (photo below). This is also an advantage when just stopping for a rest, toilet or refreshment.
Since we're done with the more rugged travelling, we decided to change - and we're pretty happy so far. My hands are very sore these days, and without pharmaceutical intervention I struggle with things like the jockey wheel and corner legs of the caravan. I'm really appreciating that I don't have to hitch and unhitch the camper all the time.