Maserati Grancabrio vs Rolls-Royce Spectre: Specs Compared

Running cost over five years: at the EPA's 15,000-mile-a-year assumption the Maserati Grancabrio burns about $900 of fuel annually against $950 for the Rolls-Royce Spectre. That $50 yearly gap compounds to roughly $250 over five years and $400 over eight — often more than the price difference between two trims of the same vehicle, and the single largest running-cost line item separating these two.

City versus highway split: the Maserati Grancabrio is the stronger commuter at 84 mpg city, while the Rolls-Royce Spectre pulls ahead on the interstate at 86 mpg highway. If most of your driving is stop-and-go traffic the city figure is the one to weigh; for long-distance highway mileage the reverse is true, and the two vehicles effectively swap places depending on how you drive.

Powertrain choice: the Maserati Grancabrio is recorded with 1 distinct engine configuration (SIDI & PFI), the Rolls-Royce Spectre with no. Across 9 recorded Maserati Grancabrio configurations and 12 for the Rolls-Royce Spectre, the wider the engine spread the more the real-world fuel efficiency depends on which version you actually buy, so check the specific model year and drivetrain rather than the headline number.

Drivetrain and class: the Maserati Grancabrio is offered with All-Wheel Drive, the Rolls-Royce Spectre with All-Wheel Drive. All-wheel drive typically costs one to two mpg combined against the same vehicle in front- or rear-wheel drive, which is worth remembering when the gap between these two is small. The EPA classes them as Subcompact Cars and Compact Cars respectively — the class drives the interior volume, cargo space and passenger space each one is measured against.