I can't say at the moment. You think it would be clear from the driver's manuals, but it isn't. There are descriptors for vehicle options, but it is not obvious which vehicle you are driving. They seem to have adequate power for modest displacement so I suspect they are turbocharged. These days it's not possible to see much under the hood. I tend to be hypersensitive to off-nominal notices and will get my vehicle into the dealership right quickly. The guys there seem to be on the spot. I'm a big believer in maintenance. My Dad pretty much drilled into me that the only difference between men and beasts is that men maintain their machines.