Jeep Gladiator vs Nissan Frontier: Specs Compared

Running cost over five years: at the EPA's 15,000-mile-a-year assumption the Nissan Frontier burns about $2,950 of fuel annually against $3,250 for the Jeep Gladiator. That $300 yearly gap compounds to roughly $1,500 over five years and $2,400 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 and highway economy: the Jeep Gladiator leads in both cycles — 22 mpg city and 28 mpg highway against 19 and 24 mpg — so its fuel-efficiency advantage holds whether you commute in traffic or cover long highway miles.

Powertrain choice: the Jeep Gladiator is recorded with 2 distinct engine configurations (3.6, 3.0), the Nissan Frontier with 4 (SIDI, SIDI; ISS and AGS, 2.5). Across 17 recorded Jeep Gladiator configurations and 57 for the Nissan Frontier, 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 Jeep Gladiator is offered with 4-Wheel Drive, the Nissan Frontier with Rear-Wheel Drive, Part-time 4-Wheel Drive, 4-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 Standard Pickup Trucks 4WD and Small Pickup Trucks 2WD respectively — the class drives the interior volume, cargo space and passenger space each one is measured against.

Tailpipe emissions: at their cleanest configurations the Jeep Gladiator emits 423 g/mile of CO2 versus 423 g/mile for the Nissan Frontier. Emissions track fuel consumption almost exactly, so the cleaner vehicle here is also the cheaper one to fuel.