Honda Odyssey vs Kia Carnival: Specs Compared

Running cost over five years: at the EPA's 15,000-mile-a-year assumption the Kia Carnival burns about $1,850 of fuel annually against $2,800 for the Honda Odyssey. That $950 yearly gap compounds to roughly $4,750 over five years and $7,600 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 Kia Carnival leads in both cycles — 34 mpg city and 32 mpg highway against 19 and 28 mpg — so its fuel-efficiency advantage holds whether you commute in traffic or cover long highway miles.

Powertrain choice: the Honda Odyssey is recorded with 2 distinct engine configurations (SIDI, 3.5), the Kia Carnival with 2 (SIDI; Hybrid, SIDI & PFI). Across 14 recorded Honda Odyssey configurations and 9 for the Kia Carnival, 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 Honda Odyssey is offered with Front-Wheel Drive, the Kia Carnival with 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 Minivan - 2WD and Minivan - 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 Kia Carnival emits 274 g/mile of CO2 versus 394 g/mile for the Honda Odyssey. Emissions track fuel consumption almost exactly, so the cleaner vehicle here is also the cheaper one to fuel.