I wanted more up-to-date car reliability information that made the differences between cars clearer. So a few years ago I started getting people together to make this possible. TrueDelta now updates actual repair frequencies, not just dots, four times a year, to track cars closely as they age.
Participants simply report repairs the month after they occur on a one-page survey. When there are no repairs, they simply report an approximate odometer reading four times a year, following the end of each quarter.
To encourage participation, participants receive full access to all results, not just those for the Volt, for free. I'll share results for the Volt in this thread after each update.
For the details, and to sign up to help out:
Car reliability research