The Beetle has standard post collision braking, which automatically applies the brakes in the event of a crash to help prevent secondary collisions and prevent further injuries. The ForTwo 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 Beetle Coast/SE’s blind spot warning system uses digital cameras monitored by computer to alert the driver to moving objects in the vehicle’s blind spots where the side view mirrors don’t reveal them. The ForTwo doesn’t offer a system to reveal objects in the driver’s blind spots.
To help make backing safer, the Beetle Coast/SE’s cross-path warning system uses wide-angle radar in the rear bumper to alert the driver to vehicles approaching from the side, helping the driver avoid collisions. The ForTwo doesn’t offer a cross-path warning system.
The Beetle SE has standard Car-Net, which uses a global positioning satellite (GPS) receiver and a cellular system to get turn-by-turn driving directions, remotely unlock your doors if you lock your keys in, help track down your vehicle if it’s stolen or send emergency personnel to the scene if any airbags deploy. The ForTwo doesn’t offer a GPS response system, only a navigation computer with no live response for emergencies, so if you’re involved in an accident and you’re incapacitated help may not come as quickly.
Both the Beetle and the ForTwo have standard driver and passenger frontal airbags, front side-impact airbags, side-impact head airbags, front seatbelt pretensioners, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights and available rear parking sensors.
The Volkswagen Beetle weighs 870 to 1222 pounds more than the Smart ForTwo. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts. Crosswinds also affect lighter cars more.

