Mercedes Reports Intact EV Battery After Two-CLA Side-Impact Test

Mercedes-Benz says the high-voltage battery in an electric CLA remained undamaged after another CLA struck its driver’s side in a public crash demonstration. The company described the test in an October 20, 2026 report; its findings are manufacturer-reported, not a new independent safety rating.

Two moving cars, no prior braking

Each sedan travelled at 35 mph and weighed more than 4,000 pounds, according to Mercedes. The striking car used an electrified combustion-engine powertrain; the side-struck vehicle was fully electric. Neither braked before impact.

Mercedes reports that both passenger compartments remained intact and that readings from eight crash-test dummies—four representing adults and four children—stayed below the relevant biomechanical limits. It says the electric car’s battery remained intact despite the side impact.

What the demonstration establishes—and what it does not

The result is evidence about this particular manufacturer-run test. It does not establish how every collision angle, vehicle pairing, occupant position or battery condition would perform. Nor does an intact battery in one test mean an EV battery can never be damaged in a crash.

The distinction between passive protection and crash avoidance matters, too. Because this demonstration deliberately involved no prior braking, it does not measure the effectiveness of the driver-assistance systems Mercedes discusses alongside it. Those systems require separate evaluation.

For shoppers comparing safety, use the test configuration and the source of the evidence together. A manufacturer demonstration can illuminate an engineering question without replacing the consistent procedures used for independent consumer assessments. Chiefs Review did not attend or independently instrument this test.

For context on separate U.S. safety evaluations, read our report on NHTSA’s model-year 2027 testing programme.

Illustrative archive photograph: a 2026 Mercedes-Benz CLA 250+ photographed on April 10, 2026—not either vehicle in the October crash demonstration. Photo: Charles (usf1fan2), via Flickr / Wikimedia Commons, CC0 1.0. Resized for display.