The NSX’s pre-crash front seatbelts will tighten automatically in the event the vehicle detects an impending crash, improving protection against injury significantly. The 600LT doesn’t offer pre-crash pretensioners.
The NSX has all-wheel drive to maximize traction under poor conditions, especially in ice and snow. The 600LT doesn’t offer all-wheel drive.
The NSX’s blind spot mirrors use wide-angle convex mirrors mounted in the corner of each side view mirror to reveal objects that may be in the driver’s blind spots. The 600LT doesn’t offer a system to reveal objects in the driver’s blind spots.
The NSX has standard AcuraLink, which uses a global positioning satellite (GPS) receiver and a cellular system to 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 600LT 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 NSX and the 600LT have standard driver and passenger frontal airbags, driver knee airbags, side-impact head airbags, front seatbelt pretensioners, four-wheel antilock brakes, traction control, electronic stability systems to prevent skidding, daytime running lights and rearview cameras.
The Acura NSX weighs 783 to 889 pounds more than the McLaren 600LT. The NHTSA advises that heavier cars are much safer in collisions than their significantly lighter counterparts. Crosswinds also affect lighter cars more.