[GreenMachine]

What Edmunds.com Says: Economical hybrid power combined with Highlander utility should make this another hit for Toyota.

Already known for its carlike drivability and all-around usefulness, the Highlander will soon add a fuel-sipping hybrid drivetrain to its impressive list of available features. Similar in design to the system used in the Prius sedan, the Highlander's Hybrid Synergy Drive power plant was specifically designed to handle the added weight of an SUV. It combines Toyota's 3.3-liter V6 gas engine with an electric motor that boasts twice the power of the unit used in the Prius. Working together, the two engines produce a combined 270 horsepower, enough to push this Highlander to 60 miles per hour in less than 8 seconds according to Toyota. Not only that, it's also projected to get over 28 miles to the gallon in combined city and highway driving and have a range of over 600 miles. Sales are expected to begin early next year.

I was only mentioning what has been posted already. Don't know of any exact figures, but with a projected mpg rating of 28 combined, that puts in the 30's for HWY mileage with its current 19.1 gallon tank and the est'd 600 mile range. No mention if that's 2WD or AWD mileage though.