Had my 2003 Ford E350 Pleasure-Way done in July 2016 and it cost me $30.00 plus tax which was the fee for light duty vehicles. Unless it has changed since then, a vehicle with a GVWR less than 4,500 kg was classified as a light duty vehicle. I've always had my tests done at a Ford dealer and they wanted to charge me the heavy duty vehicle rate a couple of times until I reminded them of the 4,500 GVWR limit.
I see that starting 1 April 2017 they are doing away with the testing fee for light duty vehicles but tests etc will still be required. I don't see anything that suggests the definition of a light duty vehicle versus a heavy duty vehicle has changed, although I may have missed it.
