Bentley Bentayga vs Lexus TX: Specs Compared

Running cost over five years: at the EPA's 15,000-mile-a-year assumption the Lexus TX burns about $2,600 of fuel annually against $3,600 for the Bentley Bentayga. That $1,000 yearly gap compounds to roughly $5,000 over five years and $8,000 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 Lexus TX leads in both cycles — 29 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 Bentley Bentayga is recorded with 3 distinct engine configurations (SIDI; PHEV, SIDI, SIDI & PFI), the Lexus TX with 3 (SIDI & PFI, SIDI & PFI; Hybrid, SIDI & PFI; PHEV). Across 26 recorded Bentley Bentayga configurations and 10 for the Lexus TX, 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 Bentley Bentayga is offered with All-Wheel Drive, the Lexus TX 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 Standard Sport Utility Vehicle 4WD 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 Lexus TX emits 120 g/mile of CO2 versus 203 g/mile for the Bentley Bentayga. Emissions track fuel consumption almost exactly, so the cleaner vehicle here is also the cheaper one to fuel.