The National Highway Traffic Safety Administration is investigating two complaints of powertrain failure on the 2013 Hyundai Santa Fe. Both parties indicated their vehicles had fewer than 5,000 miles on them when they heard a loud noise from under the SUV which then became undriveable. Nobody was injured. NHTSA says the complaints allege “failures of the right-front axle shaft”. The government agency is investigating to determine whether a recall is warranted. We’ll keep you posted.