The list — supplied by The San Francisco Chronicle — is one where we hesitate to draw any big conclusions. In alphabetical order, the top five models traded in are the BMW 3 Series, Honda Accord, Honda Civic, Nissan Leaf and Toyota Prius. There's no specific breakdown in trim, but all five have base MSRPs lower than available Model 3s. The long-awaited $35,000 Tesla isn't available yet.
In terms of size, features, price and market position, the 3 Series is the closest competitor. The Leaf is the only other EV, suggesting that those buyers like the technology and were ready to step up to a car with more range. The Prius comes only as a hybrid, but those owners too might be fans of fuel-saving technology. While various versions of Civic and Accord hybrids have been offered over the years. That said, these Honda trade-ins could be any version, not just the electrified models.
We wish we could get some more info on the year and trim of the trade-ins or the top-five list for the Model S and Model X. And a list of the top 10 would be twice as interesting.