I am 95% sure they will know if I redline or not.
Why don’t I want to break in the car? I have had plenty of cars from new and never once broke them in. I was hard on them from day one, and I never had an issue.
This warranty issue popped in my head when I drove off the lot. It sounds like it has valve tapping from the dealer. It only has 4 miles on it.
I drove it and hit the gas full throttle a few times. I know the engine is broken in from factory and the rest of the car is mostly untouched.
But it makes me think could they void it? If it only says recommend I assume I am good to go.
Unless Chrysler is dumb as a sack of wet socks I'm sure if red line is hit (or in the case of a manual exceeded (and it is possible to exceed redline in an automatic, too)) someone could know it. (With data logging -- built in by the factory -- there is a wealth of data/telemetry to be had. With my Porsches whenever I took the cars in for service the tech would connect a factory diagnostic computer to the car's OBD2 port and the computer would spend the next 15 minutes or so checking things, querying the various controllers for any errors, and sucking out "tons" of telemetry which went straight to the factory via network link with the computer. With earlier versions of the factory computers the techs could view some of this data but more recent versions the data was not exposed to the techs.)
If you have not broken in new cars/engines and apparently the cars/engines are no worse for the experience then if you want, if you want to risk it, go ahead and do the same with this car.
An engine broken in aggressively from new will make max power sooner. It may not make as much power as it would have had it been broken in *properly* but what you never had you won't miss. Also, max power will start to decline sooner, but if you don't hold on to your cars that long, for that many miles, maybe you don't care.
I have always followed either the factory recommended break in or a reasonable facsimile thereof when breaking in engines I've rebuilt. I have never had any problems either. And I generally hang on to my cars a long time.
If you know the engine is broken in from the factory you know more than me. I know some have reported the factory runs the Hellcat engine for "42" minutes or something in that vicinity with at least some bursts up to pretty high power levels. While the engine is more broken in that it would be without this it is not fully broken in. Lab and field tests have shown "break in" can continue for some thousands of miles beyond the nominal break in.
And I'm not sure the engines are still run this long at the factory if they are even run at all. Running each and every engine on a dyno is an expensive step and I would expect the factory to as soon as it is happy with the yields from the engine assembly line would cut back on this expensive step.
But bottom line is it is your car and you can treat it like you want.