Hello, Jerry.
I'm writing on behalf of 6gear, Inc., a leader in email marketing for the automotive industry. CSI response rates just happens to be one of our strengths--we've gotten some amazing return rates sending media-rich surveys via email.
Think of the feedback requests you've gotten in the past. Are you more likely to 1)write down answers to a survey, lick an envelope, and find a mailbox, 2)answer a list of questions in the middle of dinner, or 3)click at will on a short, colorful survey that requires fewer than five minutes of your time and which you can complete whenever you'd like?
Of course, my bias is clear.

Enough evidence is in, though, to show that email is emerging as the most effective, interesting, and hassle-free means of surveying customers.
6gear's clients have also addressed the issue of raising customer survey returns. Here's a quote from Barry DeVincenzi, Service Manager of San Francisco Honda:
"6gear's Service Follow-up Survey has worked like a champ at San Francisco Honda. The customer response rate has put us 16.5 points above the district average and 13.2 points above the national average.
We're also 13.3 points above last year's customer response rate for the same month.
The beauty of the system is that our service staff knows when a customer has a problem, and can resolve it well in advance of the survey sent from American Honda."
Good luck raising your returns, Jerry. It just so happens that the right resources are, quite literally, at your fingertips!
Best,
Lisa
Lisa Turner
Manager eMarketing
6gear, Inc.
p. 415.865.2438
lisa@6gear.com http://www.6gear.com