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Engine/Transmission/Drivetrain/Performance
The IS 250's 2.5-liter V6 engine delivers 204 horsepower at 6,400 RPM and 185 lb.-ft. of peak torque at 4,800 rpm. The Lexus IS 350's 3.5-liter V6 offers a more potent 306 horsepower at 6,400 RPM ...

Cruise control
Use the cruise control to maintain a set speed without using the accelerator. Set the vehicle speed Turn the “ON-OFF” button ON. Push the button once more to deactivate the cruise control. ...

INTERIOR
The interior of the RX 350 is surprisingly understated and simple. The wood trim looks nice, but the black- and silver-colored plastic surfaces could have appeared more upscale. After testing a ...