Most Micro-EVs on the road today are built like toys. Independent crash testing backs that comparison up.

IIHS has tested this vehicle category repeatedly. The results point to a common problem: thin cabin structure that compresses on impact. When the cabin compresses, airbags and seatbelts can shift out of position and fail to protect the passenger correctly.

Most brands in this category do not publish independent verification of their own build. ASTRAUX EV does, in full. Crash testing, rain testing, and winter testing are already completed and public, with summer testing currently underway.

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ASTRAUX EV is certified under the EU's L6e/L7e regulatory classification and holds Whole Vehicle Type Approval (WVTA), the formal approval process required for any vehicle sold under that category. That certification is the baseline every vehicle in this category has to clear.

The baseline is lower than most people assume. A vehicle can qualify for this category with a basic frame and a plastic body panel, since the legal requirement is to function and meet minimum thresholds, not to match the protection of a full passenger car. Many manufacturers build to exactly that minimum, because it is the fastest and cheapest way to bring a vehicle to market. It gets them a vehicle that is legal to sell. It does not get their customer real protection if something goes wrong.

That gap between what the law requires and what a vehicle actually needs to protect someone is why the toy stereotype exists. Most manufacturers build to the cheapest standard the law allows, then sell at the highest margin they can get. ASTRAUX EV was built on a different premise: match the structural standard of a full passenger car, not the lower threshold the law allows for this vehicle class. Vehicles built to a comparable standard in this category typically cost two to four times more than ASTRAUX EV does.

This series exists to show exactly what that difference looks like, one component at a time. This post covers two components: the safety cage and the steel used to build it.

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Structure

The Safety Cage

ASTRAUX EV is built around a continuous steel structure that surrounds the cabin. This structure is called the safety cage, and it forms part of the main frame from the start, not a reinforcement added afterward. The roof rail, the B-pillar, the door sill, and the floor cross-members all connect through this cage.

Structural collapse is the specific failure mode IIHS testing keeps finding across this vehicle category: the cabin compresses inward during an impact, and the space a passenger needs to stay protected disappears before it matters. The cage exists to prevent that. It spreads impact force across the whole structure, which keeps the force from concentrating in one area and entering the cabin.

Inside the cabin, this structure is already working before an impact occurs. During an impact, force travels around the space you occupy instead of into it, and the cage holds its shape rather than collapsing inward around you. The video below shows the bare cage before any exterior panels go on, so the structure is visible directly.

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Material

51.28% High-Strength Steel

More than half of the cage, 51.28% by content, is high-strength steel. These parts are hot-formed, shaped under heat and pressure. The process makes the steel denser and stronger than steel shaped cold.

The B-pillar and the door beams use this hot-formed steel. These two parts sit closest to a passenger during a side impact, and building them from higher-strength material is a direct response to the structural weakness independent testing has documented across this category.

The pillar beside your shoulder and the beams inside the door are built from this steel. Under high force, they hold their shape rather than bending inward toward you. In a side impact, that is the difference between the door frame absorbing the impact and transferring it to the person sitting there.