RE: Charger news and 6.4L engine for Challenger
I am pretty sure that MDS means Multi Displacement System. Anyways what ever the real words are. Basically the concept in this case it is a V8 Vehicle. When you need the power you use all 8 cylinders. When you are cruising on the highway or say sitting at a light, it just runs off of 4 cylinders. This helps to not use as much fuel.