The Wirecutter Show The Window-Smashing Tool That Could Save Your Life
Mar 27, 2026
Jen Gushue, Wirecutter editor who led hands-on testing with first responders, breaks down car window breakers. She walks through real-world tests on different glass types. Learn how to identify tempered versus laminated glass. Hear which compact spring-loaded tools work and which specialized cutters are needed for reinforced windows.
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Ads Inflate Risk But Tool Effectiveness Depends On Glass Type
- Many glass-breaker ads use fear tactics showing seconds-to-drown or burn scenarios, but actual civilian deaths from fire or drowning in car crashes are a very small fraction of total motor vehicle fatalities.
- That advertising creates demand for devices whose real-world efficacy depends entirely on matching the tool to glass type.
Testing Glassbreakers With Firefighters At A Drill Field
- Jen arranged to test many tools with firefighter Paul DeBartolomeo at a drill field using junked cars sourced for the exercise.
- Firefighters on site were curious and pulled their own pocket tools to compare and offered gloves during testing.
Windshields Are Laminated So Tips Won't Save You
- By law windshields are laminated, so common tip-only breakers won't create an escape path through the windshield.
- You need a saw-like tool to cut the plastic interlayer of laminated glass rather than a sharp point to shatter it.