The 350 and 450h both carry a 3.5L V6 under the hood. The 350 is rated at 275 horsepower, while the 450h can do a combined 295 horsepower, thanks to the assistance of the hybrid powertrain's electric motor. The 350 uses a conventional 6-speed transmission, but the 450h comes with a continuously variable transmission.
The 450h hybrid system includes a 288-volt battery pack that sits under the rear seat, sending power to the front mounted motor-generator that drives the front wheels. In all-wheel drive trims, a second motor-generator drives the rear wheels. Both models also carry an engine-driven generator to functions as a starter and a charger for the battery pack.
Lexus boasts a handling system called Vehicle Dynamics Integrated Management (VDIM); it's standard on the 450h and optional on the 350. If the system detects a loss of control, it uses an array of electronic systems ? anti-lock brakes, brake assist, traction control, stability control and throttle control to help the RX get back on track.
Further safety options include adaptive headlights and a pre-collision system with Dynamic Radar Cruise Control to set the RX's speed in relation to the car ahead. The RX has 10 standard airbags, a rollover sensor to inflate side curtain airbags and active front headrests. Inside, the RX features push-button start, 10-way power seats with memory, steering-wheel mounted controls, Bluetooth connectivity, and the Lexus Premium Audio system. Options include a smog detector, leather seats, rear-seat entertainment system, 15-speaker Mark Levinson surround-sound system, navigation system and back-up camera.
Organic light-emitting diode (OLED) multi-information display in gauge cluster
Pwr windows -inc: 1-touch auto up/down, jam protection
Pwr door locks -inc: anti-lockout feature
SmartAccess remote entry system -inc: multi-function remote, remote window down, rolling code technology
Lexus personalized settings
HomeLink programmable garage door opener
Cruise control
Vehicle theft-deterrent & immobilizer system
Automatic dual-zone climate control -inc: dust & pollen air filter
Rear air conditioning vents
Rear window defogger
Wood trim
Chrome inside door handles
Front door map storage pockets
Electrochromic rearview mirror w/compass
Dual sliding sun visors -inc: illuminated vanity mirrors, slide extensions
Lighting -inc: LED glove box, center console box, incandescent dome light w/white LED spot lights, incandescent foot lights, door courtesy lights, front cupholders, front/rear map lights, cargo area (2011)
Remote-activated & key-linked illuminated entry
Leather wrapped shift knob
Dual front/rear assist grips (2011)
Front/rear cupholders
Front seatback pockets
Coat hooks (2011)
Cargo area pwr outlet
Rear storage compartment under cargo area floor (2011)
Tonneau cover
SAFETY
4-wheel anti-lock braking system (ABS) -inc: brake assist
Smart stop technology brake override system
Vehicle stability control (VSC) w/cutoff switch
Traction control (TRAC) -inc: electronic brake force distribution (EBD)
Side-impact door beams
Enhanced side-impact protection
Front/rear crumple zones
Daytime running lights
Dual front advanced airbag supplemental restraint system (SRS) -inc: passenger twin-chamber airbag, crash severity & occupant detection sensors
Front/rear seat-mounted side-impact airbags
Front/rear side-curtain airbags w/roll sensor
Dual front knee airbags
Dual front seat active headrests w/whiplash protection