The difference is the back end. A sedan has a separate trunk with its own lid below the rear window; a hatchback has a rear door that lifts together with the rear window, opening the cargo area into the cabin. A hatchback carries taller loads; a sedan is quieter and keeps luggage out of sight.

| Hatchback | Sedan | |
|---|---|---|
| Rear opening | A hatch that lifts with the rear window | A trunk lid below the rear window |
| Cargo | More flexible; tall loads fit with the seats folded | A fixed trunk, typically about 13 to 19 cubic feet |
| Cabin noise | Slightly more, since cargo shares the cabin | Quieter, with the trunk sealed off |
| Security | Cargo visible without a cover | Luggage hidden in a locked trunk |
| Length | Often shorter, easier to park | Often a little longer |
| Examples | Honda Civic Hatchback, Toyota Corolla Hatchback, Mazda3 Hatchback, Volkswagen Golf | Honda Civic, Toyota Corolla, Mazda3, Mercedes-Benz C-Class |
| Best for | Active lifestyles, city parking, bulky cargo | Commuting, comfort, a hidden trunk |
Several models come as both, so you can choose the shape and keep everything else: the Honda Civic, Toyota Corolla, and Mazda3 have offered sedan and hatchback versions, and Mercedes-Benz sold the A-Class as both a sedan and a hatchback in other markets.
Not by body style alone. Safety depends on the specific model's design and crash-test results; check the IIHS and NHTSA ratings for the exact cars you are comparing.
Behind the rear seats they can be close, but a hatchback wins once the seats fold, and it carries taller items that will not fit through a trunk opening.
Usually about the same for the same model and trim. Insurance depends far more on the specific car, its repair costs, your record, and where you live.
It depends on the model and market. Sedans are more common, while popular hatchbacks and hot hatches can hold value well because fewer are sold new.
A hatchback with a long, sloping rear window, so it looks like a sedan from the side but opens like a hatchback. Audi calls its liftbacks Sportbacks.