Subaru Outback, Legacy Top New Forward Collision Prevention Ratings

September 26, 2013
The EyeSight system that's offered in the new 2014 Subaru Outback and Legacy might entirely keep you, in a moment of inattention, from rear-ending another car.

In a new Insurance Institute for Highway Safety (IIHS) test of forward collision prevention systems, Subaru's system topped all the rest—with a total of 74 different models tested, most with luxury badges.

Under the new protocol, which involves driving a vehicle at speeds of 12 mph and 25 mph into a stationary barrier that simulates the rear of another vehicle, seven models in all earned the highest 'superior' rating: the Cadillac ATS, Cadillac SRX, Mercedes-Benz C-Class, Subaru Legacy, Subaru Outback, Volvo S60, and Volvo XC60.

In the new test, a rating of 'superior' means the vehicle can avoid the crash entirely or substantially reduce speeds. The 'advanced' result means that the vehicle can brake autonomously and can either avoid a crash entirely or significantly reduce speeds in one of the two tests. Meanwhile, the 'basic' rating means the vehicle has a forward collision system that meets minimum federal criteria but fails to brake the car in either situation.

Six models earned the middle 'advanced' rating: the 2014 Acura MDX, Audi A4, Audi Q5, Jeep Grand Cherokee, Lexus ES, and Mazda 6. The IIHS notes that even when not optioned with the so-called Collision Warning with Full Auto Brake and Pedestrian Detection feature, the Volvo S60 and XC60 are the only two models on the market to include autonomous braking in base form and get the 'advanced' rating.

The IIHS limited the upper test speed to 25 mph because any higher speed would have extensively damaged the vehicles.

Such systems are not created equal

There were some disappointments and surprises in the new testing. For instance, the system that BMW offers—tested in the 3-Series—was given only the 'basic' rating because, as the IIHS points out, it will only brake if it detects a moving car up ahead suddenly stop; it won't perform any braking action for stopped vehicles ahead.

The Institute had even sharper criticism about the Toyota Prius V. Toyota claims that the forward collision system in that car has autobrake, but testing showed “minimal braking” and said that it currently even failed to meet federal standards for such a feature.

IIHS front crash prevention ratings - New results on 74 midsize vehicles - Sept. 2013

IIHS front crash prevention ratings - New results on 74 midsize vehicles - Sept. 2013

By the IIHS points tally, the Subaru EyeSight system, in the Outback and Legacy, was the single highest-performing one in this round of testing. It effectively avoided a collision entirely at both test speeds by braking the vehicle to a full stop.

Insurance claims seven percent lower

Forward collision warning systems—of the kind that will alert you when you need to brake for a hazard ahead, and even brake you to a stop—are establishing quite a record already for saving sheetmetal, injuries, and perhaps even lives.

According to the IIHS, claims are totaling seven percent lower for vehicles that had forward collision warning systems; meanwhile those that have automatic braking are expected to be even lower (that's already showing to be true with Volvo's system). And accident-avoidance systems as a whole could cut fatal fatal crashes by a third.

The new test is in place both to help consumers decide which features to consider, and to push automakers to adopt the technology in more of their vehicles (and to make it more widely available).

“Front crash prevention systems can add a thousand dollars or more to the cost of a new car. Our new ratings let consumers know which systems offer the most promise for the extra expense,” says David Zuby, IIHS chief research officer.

A new Top Safety Pick+ requirement

The IIHS had another surprise announcement: The new front crash protection category will be a qualification for Top Safety Pick+ status for 2014. Vehicles much be available with systems that qualify for one of the three ratings, or they can't make the top cut (which still must include top 'good' ratings for frontal and side impact tests, rear (seat) tests, and the roof-strength test, as well as 'good' or 'acceptable' results in the new small overlap frontal test. And the IIHS is targeting December for a list of those new top-performing models.

Watch the video below to get a better understanding on how the IIHS is testing vehicles in this important new aspect that could help prevent injury as well as costly collision repairs.

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