Service Siouxland for Over 30 Years. United Auto Body & Collision provides complete collision repair for all makes and models of vehicles. We've been serving Sioux-land for more than 30 years from our convenient location in Sioux City, Iowa. Our top-notch technicians provide your vehicle professional, quality service. We will do the job right the first time. Our services include: Uni-body and frame repairs All makes and models Insurance claimsPlease call United Auto Body & Collision for additional information and to receive your free estimate.