The new model features what Toyota calls an "adult-sized" third row that's roomier than the one in the regular Highlander.
The crossover has seating for three across and enough legroom to compete with vehicles like the Kia Telluride and Honda Pilot.
HERE'S WHAT THE 2024 TOYOTA HIGHLANDER LOOKS LIKE … OR DOES IT?
The Grand Highlander is Toyota's largest three-row crossover utility vehicle. (Toyota)
Toyota says seven pieces of carry-on luggage will fit behind the row while it's in use.
Toyota says the third row is "adult-sized." (Toyota)
That's one for every passenger in trims equipped with second-row captain's chairs, but an eight-passenger configuration with a second-row bench is also available.
The Grand Highlander will compete against vehicles like the Kia Telluride and Honda Pilot. (Toyota)
The cabin is wrapped in an all-new body that's entirely distinct from the smaller Highlander's, even though they are based on the same platform.
The current version of the smaller Highlander debuted in 2020. (Toyota)
The Grand Highlander will be offered with three powertrains that can all be matched with either front-wheel-drive or all-wheel-drive. They include an entry-level 2.5-liter turbocharged four-cylinder, a 2.4-liter four-cylinder hybrid expected to deliver 34 mpg combined and a V6-based Hybrid Max rated at 362 hp that allows the Grand Highlander to accelerate to 60 mph in 6.3 seconds and tow 5,000 pounds.
The Grand Highlander's dashboard is also unique and comes standard with a digital instrument cluster and 12.3-inch touchscreen infotainment system interface. Three trim levels bring increasing levels of features like a digital rearview mirror, panoramic sunroof and heated and ventilated second row seats.
The Grand Highlander is equipped with a 12.3-inch touchscreen display. (Toyota)
A Drive Connect subscription is required to unlock built-in navigation, a Traffic Jam Assist for the lane-centering adaptive cruise control and an Intelligent Assistant that provides voice control of many functions, including the audio system and climate controls. Wireless Apple CarPlay and Android Auto smartphone integration are standard, however.
Pricing and the exact on-sale date for the Indiana-built Grand Highlander will be announced later in the year.