ICU

Does anyone experience that? I feel that the car is more responsive and has more power and torque recently after I crossed the 6000-mile mark on the odometer, or that is my hallucination bias. For the first 600 miles, the car was not that responsive- at least, this is what I felt driving this baby as a daily driving toy.

joe 997

Hopefully it continues for another couple of thousand.

rdv

Very common for an ICE to “loosen up” so to speak after a few thousand miles. Reduced friction and pumping losses = more power, enough to be noticeable in some cars. Consider yourself lucky you feel it, not all cars show a noticeable improvement.

johnohara

My 992 GTS felt a little faster after 500 miles or so. I reported it in another thread and it was proposed that I was hallucinating.

After 2000 miles the car feels great !

Staffie Guy

I read somewhere that a motor is at its best at around 20K miles.

Dr. Z

I just crossed 7000 miles and definitely feel a difference….I also noticed that on a recent 250 mile trip…in Normal mode..I got 29.0 MPG…..which is the best I’ve seen…….

detansinn

Driving them is good for them and they get better with the miles.
Folks wanting to put a tune on the car right away should drive them first. Put a few thousand miles on the car and it comes alive.

ipse dixit

Engines are just like new leather shoes.

They loosen up and tend to be more responsive (both in power and harmonics) as mileage increases. At around ~10k it sort of plateaus.

And just like shoes, after so many miles, time for new engine (or a rebuild). But that's just usually in the 100s of thousands of miles. Much more than most folks on Rennlist will ever put on their 911s.

Tupper

^ I like the above two posts. A LOT

Because I like to drive. I’m not a garage queen keeper

pitt911

when I used to keep cars for 10-15 K miles I always noticed a power and responsiveness increase after several thousands miles
People used to tell me it is in my head
unfortunately the past few years , I switch cars around before 5 k miles , so I have not had this experience
but I 100 % believe in that

AlterZgo

There is really no evidence that these cars, or any modern cars for that matter, “loosen up” and get faster or more powerful with more miles. Take a look at any Car and Driver long term road test where they test a car new and again at 30K miles. Most perform virtually the same. A small handful perform slightly better and a small handful perform slightly worse. This could be chalked up to different weather conditions and road surface conditions during testing and perhaps a tiny handful of cars do break in and get faster (or slower) over time.

Personally I have never noticed any of my new cars getting faster over time. What I have noticed is the exhaust getting a bit louder and the suspension getting softer and less composed over time as the shocks break in and wear down even with as little as 10k miles.

asuresh8

I noticed this as well. I took the car up to 7000 RPM a few times but not redline until around 2000 miles. After the first time I red-lined the engine, the engine became way more responsive.

Zanotti

2024 GTS here, 1400 miles so far. Pretty sure it is way more free revving now than new. I had a great long trip and really changed revs and kept the car hot for multiple hours at a time and I think that made all the difference. It's not just the miles, but letting the engine heat sink in really helps.

PSPorsche

I’m also just over 1,400 miles now.

I’ve been trying to keep revs below 4K during break-in, but I got a little surprise this morning…

I needed to pass someone, so I pressed the accelerator (while in sport mode) expecting the car to speed up and hit about 4K, like usual. Instead, the engine spiked up to 6K instantly and the car really hustled.

I don’t remember it being so free revving previously, with the same amount of throttle pressure.

PhilH930

Fun to read. I'm still in break-in window, but crossed 1250 miles and couldn't resist taking it a little higher just one time (6k rpm). The car threw off a new odor!

Somewhat related, was at an event at PEC ATL that included some hot laps. Asked the driver about tire pressures and break-in. Response was they start at 28-30 psi, and when we were running all wheels were up to 41. Regarding break-in, the driver commented 100 miles then they unleash them. Also commented they've had numerous 911s at 2.5K launch controls prior to moving the cars on. Amazing really (I'm not recommending 2.5K in your own car!).