Since we rate the regular Highlander separately, there’s no reason to dock this car for its obvious fuel-saving drawbacks. Driven as this model is intended, the Highlander Hybrid delivers a seamless, utterly relaxing experience that’s 90 percent worthy of a Lexus RX. The regular model’s 3.5-liter V6 is detuned in favor of a fuel-efficient Atkinson combustion cycle, which drops horsepower from 270 to 231. But when combined with two electric motors, including one at the rear axle that qualifies the vehicle for all-wheel drive, the Hybrid delivers 280 combined horsepower that’s sufficient despite the extra weight of the nickel-metal hydride battery and electric motors. Toyota’s hybrid expertise is always evident. There is never a shudder when the big V6 shuts down or restarts, and it happens so transparently you’d never know what was running were it not for that energy diagram on the instrument cluster.
The seats are plush and supportive, the ride comfort is serene but not floaty, wind and road noise are just faint hums at highway speed, and the steering is fingertip light on effort. There are no gear changes, since the continuously variable transmission is made up of belts and pulleys. The brakes transition from regenerative (using the electric motor friction to slow the car down) to conventional (disc rotors) just as easily, and the pedal gets a little mushy only at the very end of travel. Harshness and vibration are not welcome here, and they show up rarely.
But hybrid powertrains always bring compromise. The same CVT that allows silky torque transfer causes the engine to emit a high, sustained groan under heavy acceleration. The steering is loose and entirely numb to the road surface. You won’t know, for example, how much load is really on those front tires. Save for the steering, the regular Highlander alleviates all those concerns. But this sacrifice awards the driver an EPA-rated 28 mpg in the city and 27 on the highway. Over 400 miles, mostly on highways, we averaged close to 27 mpg. Compare that to the regular Highlander AWD’s 18/24 rating. If your commute involves a lot of stop and go, you’ll pocket significant savings once you’ve paid off the hybrid’s $3,000 premium.
Weirdly, the Hybrid won’t crank the engine until several seconds after you’ve started the car, which confuses first-time drivers who wouldn’t think to look for the small “Ready” light on the instrument cluster. For optimum emissions, the engine and the catalyst must reach operating temperature as soon as possible, and since this is not an electric vehicle, why not start it immediately?
One other thing: The EV Mode switch is supposed to lock the car on battery power, but it’s a silly ploy. It won’t work above 25 mph and will usually cancel out when pressed, since the car always meters the precise level of power required. Unlike a plug-in hybrid, the Highlander Hybrid has no feasible electric-only range and can run on the battery alone only at higher speeds when coasting or applying the throttle downhill. Avoid it and let the car decide.