Mitch,
I'm a vendor, so I work with dealers on setting this process up. Hopefully my comments below will help you.
That's a good idea, where it gets difficult is the transition afterwards. I'd like to hear more about your process - do you guys get the customer to review right then?
You should do it before, during, and after the sale if you can. Why not? You do it before the sale by advertising at the dealer that you want to hear from your customers about your biz performance, you can do that in places like the window stocker in the used cars: "tells us about your experience @ capitalagexperience.com", "we listen so we can improve, tell us @ capitalcarexperience.com", "how did we do for you?", etc.
The dougnut delievery truck has something like that in theback of the trucks! 'how is my driving: call 800.000.000" That provides some type of notion to the customer that the doughnut company cares but it also lets the driver know that he is acciuntable at all times. This works the same for your sales people at the dealer if this is in the window labels: "srew up with a cstomer and we will know".
Do you get them to do it at home?
Sure, why not? If they are mad at you they are going to write something anyway... lets encourage the positive ones.
How do you make it easy for the customer to post the review?
We build these for our clients for about $150
ilovebarriervolvo.com
They work great on an IPAD, allow you to direct customers to any site that you have (Yelp, google, DR, etc) and also to your own site if the custoemrs don't have any account.
Use this at the dealership, or tell them to use it when they go home.
I'm sure that you can get other people to build these for you for $150... just stay with the idea.
Notice at the bottom of the page that we also integrated their craigslist postings, reviews, and blog... we index these sites also under your name pretty well.
This dealer has a link to thattype of page at the top corner in their home page:
Brien Everett Ford dealers - Seattle Ford cars - Marysville - Ford trucks serving Lynnwood Bothell WA