2015 2.7, drove on freeway for 2 hours after first 100 miles

5 Speed manual. No cruise control.

Break-in period... Dealer didn't say anything about it and I had no idea. After 100 miles we had to get on I-5 for at least another 100 miles... I didn't knowingly vary the speed but would have if I had known.

Should I be worried?

 

Should be ok.

 

As far I know all the engines are pretty much broken in at 0 miles on the clock from the factory.

 

So far, all that sounds good... I've seen a LOT on this site talking about the break-in period (after the deed had been done), saying the only thing to really watch is the consistent speeds during the first 1000, and of course that's the one thing I failed to do (at least in the first couple hundred, and then another short freeway trip after that)

 

New cars dont have engine break in periods anymore.

Yes the transmission may need a little, but nothing big. Its all broke in now...

 

I think the manual says to avoid sudden and harsh acceleration for the first 500 miles. Of course it doesn't say absolutely no harsh acceleration but avoid. Look in the manual if you have one.

Anyway I'm pretty sure you'll be ok.

I agree though modern engines are pretty much broken in from 0. Most people seem to observe that they start seeing their ideal MPG around 10K but I think this has more to do with the driver getting the feel for their new vechile and adapt their driving. A new or new to me vehicle regardless of age I don't feel like its an extension until I driven it for a few months.

If you have ever driver 18 wheelers you really feel how each truck has its own "personality" but I notice it with other vehicles too. For example the company Tacoma feels a little different from my Tacoma.

 

You're fine. Don't stress about it and enjoy your new truck. Congrats BTW!

 

I did a 1500 mile road trip in mine right after picking it up from the dealer. I drove it like I stole it the whole time. No issues.

 

Ever see how a race engine gets broken in?

 

The only concern may have been if you towed a trailer. Don't worry