There are so many variables involved in these deals that stating one class has greater losses than another is not always true. Two recent examples. I purchased a new 2011 Winnebago Vista Class A for $81,100.00 including all the dealer BS that they like tack on but excluding only sales tax. I used it for two winter trips to Florida, put on about 6,500 miles and sold it in 2013 via local Craig's List advertising for $75,000.00, net loss $6,100.00 plus tax in two model years on a Class A. I then bought a 2012 Pleasure-way Excel that was sold new, 6 months prior for 78,300.00 including all the dealer BS but excluding sales tax (I was given a copy of the dealer contract) as well as the selling price being on the title which confirmed the true purchase price. I bought this from the original owner 6 months old with 3,200 miles on it for $61,000 plus sales tax. His net depreciation over one model year was $17,300.00 plus his sales tax on a Class B and I was the third person to make an offer on this unit which was listed on RV Trader.com. These are true to the dollar exact figures on two units that were both in immaculate condition with low mileage and with no trades involved. When there is a trade involved you cannot get an accurate value of the unit you are trading in as only the difference matters and they can fill in the blanks with whatever they feel will make you happy. I once posted on here the total cost to own 3 new pleasure ways over a period of 9 years and having approximately 35,000 miles on each when sold, I can't remember the exact figures but it was somewhere around $700.00/month in depreciation having a new unit every three years and always having a warranty and near zero maintenance costs for things like tires, brakes, etc., really not that bad when you think about it that way. Those units were 2001, 2004, and 2007, today they are much more expensive so I would assume a greater depreciation in dollars if the percentages were to remain constant.
Nick