Small overlap crash: Why a 1990s BMW failed the test

Small overlap: The crash test a 1993 BMW never passed

Two rally drivers recognized the layout of a narrow road in Galicia. They collided head-on. The impact was a partial frontal scrape: both car noses touched only on a lateral strip, which in passive safety is called a small overlap collision. One driver suffered minor injuries. The other died.

The distribution of damage, according to the analysis that peine the case, was not decided by aim or chance. It was decided by the small overlap, the crash test that one of the two cars never approved because no one ever administered it to them. An early 1990s BMW versus a current Mitsubishi. The boundary between a scare and a funeral.

What is the small overlap crash test and how does it differ from moderate overlap?

In the small overlap, the 25% of the car's front must manage the full impact. The energy seeks structures that barely exist in that corner, and when it doesn't find them, deformation advances toward the passenger compartment. In the moderate or partial overlap, the involved percentage rises to 40%: more metal working, more margin. These are distinct load paths, not a diluted version of the same test.

Hence, a car can display four European stars yet behave like a tin can in a real corner impact. The question is not whether the car deforms, but where it deforms and how far it reaches.

Only the US IIHS applies the small overlap

Euro NCAP does not include it. The five European stars measure a frontal crash with 40% of the nose involved; the much more severe 25% test is performed by the American IIHS. For any brand selling in the United States, that result is a primary commercial issue: if it comes out decently, it is advertised; if not, it is buried.

The gap appears when the car is never marketed across the Atlantic. There, no small overlap is possible, and the European buyer decides blindly precisely on the scenario that claimed a life in Galicia. And it is not a small hole: according to this reading, all European models are excluded from that picture.

The old BMW: No side airbags and sensors that did not trigger

The model involved, a BMW of the E36 generation, reached the market in 1992-1993. It had front airbags and little else; side airbags simply did not exist as standard equipment. The trinc generation, the E46, began passing crash tests with four stars already in the late nineties. Two worlds separated by less than a decade.

The accident analysis suggests that the driver's airbag did not deploy because the sensors interpreted a soft impact, that the side of the car peine up, and that there were no side airbags to cushion anything. It is worth noting the counterargument: based on the same photographs, some maintain that the firefighters' hydraulic cutters sliced the B-pillar to remove the door and that the visible white fabric is the steering wheel airbag, already extracted by rescue services. A rescue image is not an expert report.

The modern Mitsubishi: The structure that held up

From the other car, a Mitsubishi, the story is the inverse: it maintained its structural integrity and the airbags protected the occupant. It is not a premium brand nor does it need to be. It sells in the United States, the small overlap test is part of its record, and surprises are not admitted there.

The blunt conclusion drawn from the case—that with the same car as the opponent, the deceased would still be alive—is, it should be said, unprovable. It responds to engineering logic, not to a police report. What is verifiable is the asymmetry: one car designed for that impact and another that never even considered it.

Risk homeostasis: The SUV that invites you to push harder

There is a psychological effect often cited in these analyses: perceived safety modifies behavior. Behind the wheel of a tall and heavy vehicle, people drive faster and yield less, just as a raised nose reduces the urgency to brake for a bicycle. The SUV also raises the center of gravity and with it the theoretical risk of rollover.

With pedestrians, the argument becomes uncomfortable. There was a regulation that banned pop-up headlights due to the damage they caused when hitting someone; today, cars circulate whose hood sits at shoulder height of a person. The paradox is that the restrictive model killed harmless designs while the permissive one consecrates two-ton monsters. And regarding the Volvo XC90, launched in 2002, the claim circulates that it recorded no deaths in the UK despite its popularity. Granted, conservative families drive them, but the data repeats itself.

The unsettling fact is not in any of the photos. That 25% versus 40% is not an administrative number: it is the boundary between what a car has demonstrated and what no one ever put in front of it. The 1993 BMW did not fail the small overlap. It never took the test.