The Lexus LC has standard driver and front passenger side knee airbags mounted low on the dashboard. These airbags help prevent the driver and front passenger from sliding under their seatbelts or the main frontal airbags; this keeps them better positioned during a collision for maximum protection. Knee airbags also help keep the legs from striking the dashboard, preventing knee and leg injuries in the case of a serious frontal collision. The Emira doesn’t offer knee airbags.
The LC has standard Secondary Collision Brake, which automatically apply the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The Emira doesn’t offer a post collision braking system: in the event of a collision that triggers the airbags, more collisions are possible without the protection of airbags that may have already deployed.
The LC’s standard lane departure warning system alerts a temporarily inattentive driver when the vehicle begins to leave its lane and gently nudges the vehicle back towards its lane. A lane departure warning system costs extra on the Emira.
The LC has a standard Panoramic View Monitor to allow the driver to see objects all around the vehicle on a screen. The Emira only offers a rear monitor and front and rear parking sensors that beep or flash a light. That doesn’t help with obstacles to the sides.
The LC has a standard blind spot warning system that uses sensors to alert the driver to objects in the vehicle’s blind spots where the side view mirrors don’t reveal them. A system to reveal vehicles in the Emira’s blind spot costs extra.
To help make backing out of a parking space safer, the LC has standard Rear Cross-Traffic Alert, helping the driver avoid collisions. Lotus charges extra for Rear Cross Traffic Alert on the Emira.
Both the LC and the Emira have standard driver and passenger frontal airbags, front side-impact airbags, front seatbelt pretensioners, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, crash mitigating brakes, daytime running lights and rear parking sensors.
The Lexus LC weighs 1033 to 1311 pounds more than the Lotus Emira. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts.

