SCM,
Dealerships and markets are like snowflakes, no two are alike!
Ok SCM, you're putting out the effort for sure, all great info.
We all take on roles, some of us are small, some are large. EACH of us has unique challenges. EXAMPLE: Due to your size, You can "out effort" a bigger store and make your presentations far more personal. If you put more effort into your presentations, you could expect your # of pages viewed and time on site to increase.
Branding is a problem that needs addressing. Nearly every visitor to your site has no clue who you are. If I land on your site from a search engine & if your site dosent visually convey a high end reputation and a positive shopping experience (in about 10 seconds), then off I go. What ever is your stores "theme" you need to get it out ASAP. Testimonials help here.
Without seeing your content, I'd make sure that your photos are magical (as close to perfect as you can get).
Bounce rate tells me that most of your traffic comes from Search engines. Yes? No?
Also, ck keyword phrases that folks are using to find your site. If you have a lot of "Toyota Prius Replacement Headlamp" hits then, the bounce rate isn't as much of an issue.
There's lots more stuff to consider, but... until you disavow your allegiance to INGTGMURL and jump ship to the "good team" IGURL, I must end it all here
Hope this helps,
Joe
p.s. Jeff K's has been overheard discussing plans on a "pimp my site" thread sometime in the future. I got 1st dibs!!