Auto Dealership Tucson, AZ – Sprinkler system prevents garage fire from spreading to showroom at Mercedes-Benz dealership October 29, 2018 viking210 A fire at a Mercedes-Benz dealership on Tucson’s east side on Wednesday, Oct. 24, damaged at least one car in the garage, but did not spread to the showroom. Sprinklers activated, helping stop the spread of the fire at 6350 E. Grant Road. According to information from the Tucson Fire Department, one employee of the dealership was taken to the hospital for treatment of minor burns. No firefighters were hurt. It took 36 firefighters and 15 TFD units about 16 minutes to get the fire under control. Investigators are working to determine the cause and origin of the fire.