Abstract: A computer, including a processor and a memory, the memory including instructions to be executed by the processor to predict failures for each of a plurality of vehicle components by processing vehicle data with one or more recurrent neural networks, wherein vehicle data includes engineering test data, vehicle control data, vehicle service data, and vehicle environment data and wherein predicting the respective failures includes determining a remaining useful life for each of the plurality of vehicle components. The instructions can include further instructions to determine a vehicle optimization strategy by optimizing remaining useful life for one or more of the plurality of vehicle components to avoid the vehicle component failure and download the vehicle optimization strategy to a vehicle.