jakematic

Inspired by gb4.2's specs and some other recent models I'm puzzled.

My dealer has a low milage 2011 with every option except dual pane.
I mean everything, including B&O sound.
It seems odd that a $600 option was not included on the vehicle.

The glass is a must have for me on D4 and it's perplexing why it's seen so rarely.
Extra security is a nice bonus, but the acoustic properties are my main driver.

Guess it's a good excuse to put the 2013 on order next month

Appreciate your thoughts. Thanks-Jake

gb4.2

Knowing what I do about the better sound absorption characteristics of the laminated glass for the side windows (3 layers---glass/PVB/glass--similar to the windshield tri-laminate), for me, choosing this option was easy for me as well. I had it on two D3's (2005 and 2008). The added "security" of more difficult-to-break side windows certainly helps. I can't say that I have any experience in an A8 that doesn't have this option so that I could compare them with and without this option--to me, it's just a relatively low cost option that adds to the car functionally (to make it quieter inside) and from a sense of enhanced security.

To your point, it does seem odd that an almost fully loaded 2011 wouldn't have this option.

derfA8L

Have had the dual paned glass on all 3 of my A8s, and wouldn't take one without it. Not only does it provide the extra security and sound deadening aspects, but there's also an added thermal benefit which helps in cold/hot outside temp conditions to keep the car's occupants more comfortable. As indicated, a comparatively low cost option that significantly improves the ownership experience, IMO.

cricgolf

do the EZ pass and other transponders work through the double paned glass?

gb4.2

Short answer--yes.

Longer answer--Yes, the double-paned acoustic glass is nothing more than "windshield"-type glass used for the side windows rather than a single layer of glass for the side windows. Conventional windshields (and the double-paned acoustic side windows) are constructed by laminating 3 layers of material together---glass on both sides with a layer of polyvinyl butyral (PVB) in the middle. These laminates are relatively transparent to EZ pass units and other transponders. You'll have no issues with these devices.

MichiganA8L

Drove a A8 with and without dual pane back to back. There is a noticeable difference at highway speed. Great option for $600 IMO. Just took delivery of my car and that was one of the options on the "must have" list.