Infiniti QX50 vs Volvo XC90: Specs Compared

Running cost over five years: at the EPA's 15,000-mile-a-year assumption the Infiniti QX50 burns about $2,800 of fuel annually against $2,800 for the Volvo XC90. That $0 yearly gap compounds to roughly $0 over five years and $0 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 Volvo XC90 is the stronger commuter at 26 mpg city, while the Infiniti QX50 pulls ahead on the interstate at 31 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 Infiniti QX50 is recorded with 3 distinct engine configurations (SIDI & PFI, SIDI & PFI; VCR, 3.7), the Volvo XC90 with 4 (SIDI; Mild Hybrid, SIDI; PHEV, 2.0). Across 20 recorded Infiniti QX50 configurations and 43 for the Volvo XC90, 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 Infiniti QX50 is offered with Front-Wheel Drive, All-Wheel Drive, Rear-Wheel Drive, the Volvo XC90 with All-Wheel Drive, Front-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 Small Sport Utility Vehicle 2WD and Standard Sport Utility Vehicle 4WD respectively — the class drives the interior volume, cargo space and passenger space each one is measured against.

Tailpipe emissions: at their cleanest configurations the Volvo XC90 emits 131 g/mile of CO2 versus 336 g/mile for the Infiniti QX50. Emissions track fuel consumption almost exactly, so the cleaner vehicle here is also the cheaper one to fuel.