More specific "engine type" by model

[creepynut]

I think it would be good if the engine type was a little more specific than "Gas H4" with "1.8L 4-speed auto" for example.

First, I don't know what H4 means, other than 4-cyl I'm guessing. I'm looking at the Toyota Matrix and the current generation is offered in many different engine configurations:
1.8L 4-speed automatic
1.8L 5-speed manual
2.4L 4-speed auto AWD
2.4L 5-speed auto
2.4L 5-speed manual

When I'm looking at the Matrix on Fuelly it is impossible to tell what engine configuration each is and each offers slightly different EPA fuel efficiency.