Which is NOT a responsibility of a combination technician?

A combination technician in the auto collision repair field typically handles multiple aspects of vehicle restoration, which may include mechanical repairs, repainting surfaces, and detailing exteriors. However, impact assessment of accidents usually falls under the domain of specialists, such as collision estimators or adjusters, who focus specifically on evaluating the damages and estimating repair costs.

Performing mechanical repairs, repainting vehicle surfaces, and detailing are direct responsibilities that a combination technician would normally take on. These tasks contribute to the overall goal of restoring the vehicle to its pre-accident condition. Since impact assessment requires specific expertise and thorough understanding of vehicle dynamics and insurance processes, it is not a primary responsibility assigned to a combination technician, making it the correct answer to the question.