What's the Difference Between Rental Car Classes?

Rental classes are standardized loosely across companies but the actual make and model can vary within a class, so the "or similar" language in a booking confirmation means the exact car isn't guaranteed. Compact and economy classes suit city driving and small groups, while midsize and SUV classes handle luggage and longer trips more comfortably.

If a specific model matters to you, some companies allow a guaranteed-model booking for an additional fee, though availability varies.