The contact owns a 2011 Chevrolet Cruze. The contact stated while driving at an undisclosed speed, the RPM increased and there was a burning oil odor on the interior of the vehicle. No warning light was illuminated. The contact stopped and parked the vehicle. The contact performed an inspection under the hood and when the oil cap was removed, the contact noticed a whistling sound. The vehicle was taken to an independent mechanic where it was diagnosed with a failed intake manifold. The contact was informed that the intake manifold needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 67,000.