Why don't you track more vehicle details?

When Fuelly members create a new vehicle we ask for a few details: make, model, model year, body style, fuel type, engine type, and manual vs. automatic transmission. There are dozens and dozens of other attributes we could ask for including engine displacement size, trim level, drivetrain, turbo, and the list could go on and on. Some folks would love to see much more detail for every vehicle listed at Fuelly. We feel that asking for too many vehicle details would alienate some people and could mean there would be less people tracking on Fuelly overall. This is a constant balancing act and something we're always thinking about: how do we keep things very simple and welcoming for people who aren't car enthusiasts, but also provide data for people who want more detail. For the time being we're comfortable with the level of detail we ask for because we believe it means there will be more people tracking overall—giving everyone more fuel economy data. If you want to volunteer more information about your vehicle, please do that in the vehicle name or description. People won't be able to sort by those details, but it will help folks who want more details as they compare fuel economy.