Economy
The smallest practical car. Best for one or two people, short distances, and tight parking. Weak when the highway is long or the winter plan is ambitious.
Classes
The ordinary cars: easier to park, enough for many trips, and the wrong tool when the week outgrows them.
The decision
Economy, compact, and midsize are the ordinary rental cars: a small or medium vehicle for people and a modest amount of luggage. The names overlap from one company to the next, so the useful comparison is people, bags, and the kind of road.
The town changes the parking and the weather. The class is explained once, here. If the place has its own driving guide, it is linked from locations.
Sizes
The smallest practical car. Best for one or two people, short distances, and tight parking. Weak when the highway is long or the winter plan is ambitious.
Still easy in a city, with a little more composure on a highway. Often the default when downtown and one regional drive share a week.
More rear-seat space and a calmer highway ride. The step before an SUV if you do not need height.
Limits
Choose an SUV if clearance, a cottage road, or a heavy winter highway is the real trip. Choose a minivan if the rear doors and the child seats are the real trip. Choose luxury only if the cabin is the point.
Economy is also the class people hope will be cheap. Read cheap car rental for that hope, and do not expect a rate on either page.

Questions
No. Names vary by supplier. The descriptions are about size and use.
They overlap in casual speech. Compact usually means a step more car than the smallest economy option.
No.
On their own pages, linked from car rental and the footer.
Next
The planner records a pickup, a return, and an optional vehicle class. Ebomim does not reserve a car or publish a rate.
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