AllData and Mitchell provide full OEM service manuals. They tell you "remove bolt A, then bolt B." Autodata assumes you know how to remove the part and simply tells you "Bolt A is 10Nm, Bolt B is 12Nm." Autodata is faster for specs; AllData is better for teardown instructions.

Autodata Mega has had a significant impact on the automotive industry. The company's products and services have helped to:

Autodata typically operates on a subscription model. It is generally priced lower than the full AllData DIY packages but is geared strictly toward professionals.