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With the latest version of parent Toyota's gasoline-electric Hybrid Synergy Drive system under the hood, the posh RX 400h is the first SUV hybrid that actually outperforms its gasoline counterpart. A 3.3-liter gasoline V6 teams up with powerful front and rear electric motors to create a four-wheel-drive RX that is not only quicker (7.3 seconds to 60 mph, against 7.8) but also vastly more fuel-efficient (31 mpg city/27 mpg highway, versus 18/24 mpg). $49,060