I’m looking at a 2016 Newmar mountain aire. It’s a 4553 model, and the selling dealer say it’s a 500hp. All the brochures and information I can find says it’s 600hp. Anyone know for sure? I have the...
It depends on the engine, not sure what was offered at that time. As mentioned above, the X12 will be around 450 - 500 hp, and the X15 will be in the 600-605 hp range. As far as I recall, the X15 may not have been available in the MADPs, so it may be an X12. Either one of those engines are fantastic, but the X15 is in a class of its own IMHO.