In our part of the world, a driveline is the same as a driveshaft. Drivetrain is the same as powertrain which is what you described....engine, trans, rear end.....Anybody else use a different name? I know other countries use different terms for some items....boot and bonnet for trunk and hood, guard for fender, windscreen for windshield, etc, but we should at least speak the same language in this country! :-) Not to go too far off on a tangent but, why couldn't the car makers get together on what they call certain body types. There are hardtops, coupes, sedans, and a variety of others but some names contradict themselves. Take a Cadillac Sedan DeVille....it can be a 4DR hardtop or a sedan! My understanding was a sedan has frames around the door glass(es) and the hardtops didn't. Hard Top DeVille doesn't exactly roll off the tongue though, so that might be the reason. I guess the brains over there at GM couldn't come up with a new name....