Here are my initial thoughts on the accessories:
The Hood deflector appears to be of good quality and is a dark tinted plastic. It installed with some difficulty in aligning the screw plugs to the holes under the hood. It also required two large bumpons to be stuck on the hood under the deflector on each side. The deflector came with them. The instructions state to remove 4 of the plastic rivets holding the front rubber seal under the hood. It says to remove them and keep them, but they did not come off easily unless broken off. All but one were broken in the removal. It does not concern me because the plastic rivets are replaced by screws that screw the deflector to the underside of the hood. The hood deflector was made in Australia.
The Roof Rack is an aluminum Whispbar product (made by Yakima, apparently). It has a shape much like an airplane wing, with the front being rounded and the rear tapering off to a fine edge. The roof rack is of high quality and adjusting and installing it was simple. It also features a groove inside the roof rack with a rubber filling. You apparently can opt to run an attachment bolt inside the roof rack instead using clamps around it. The Mont Blanc bike module attaches this way. The roof rack also features locking end caps on all sides that lock with a key. The roof rack was made in New Zealand.
The Mont Blanc bike module appears to be of high quality in material, but I was shipped a defective product.

Otherwise, the bike module has a locking arm that holds the frame in addition to straps that hold down each wheel into their cradles. The module is designed to hold the bike with both wheels attached to the bike.
There was a post on this forum by a one-post member who asked if the rack held a bike other than a mountain bike (all images of the Mont Blanc bike module show a mountain bike). The poster was concerned whether it would fit a road bike with skinny tires. Yes, it appears it will hold any kind of bike. In fact, the wheel cradles have two grooves; a narrower groove recessed inside a wider one. I imagine the narrower groove is to fit a road bike's skinny tire. The locking arm is also adjustable and should hold a thin frame tube just fine. It works like an adjustable clamp that can be locked into place by a key. The Mont Blanc bike module was made in Sweden.
I am looking to get the defective bike module replaced soon and use the bike module and the roof rack to see how they perform.
In the future, I will also compare MPGs with the roof rack on vs. no roof rack.