Break in period on new motor?

Break in period on new motor?

I searched the forum but did not see anything about this. I assume there is no break-in period for the motor as there would be in an ICE where you need to baby the engine for a few hundred miles. Is that correct?
I am getting my Model S next week and I can barely stand it! | June 12, 2013

No break-in needed is needed on an EV car. It's desired in ICE engines to smooth the cylinder linings, especially in older-designed engines where the manufacturing tolerances were lower.

NICE | June 12, 2013

Yes, here's the process; make sure you follow it closely.
Punch it at every chance you get. Show your Tesla grin proudly as you pass bystanders. ;)

bfranks273 | June 12, 2013

Wait till you find out all the other stuff you dont have to do. And that you CAN do.

kheadrick | June 12, 2013

Thanks. I wanted to be sure I could floor it with a maximum tesla grin on my face the moment I got behind the wheel.
And the thing I can barely stand is, of course, the wait.

KOL2000 | June 12, 2013

The Ice age is over bro.

Tâm | June 12, 2013

When I got delivery of my car, I noticed the enormous TORTURING of the motor as evidenced by the Energy Graph.

The Delivery Specialist reassured me: It's not what you think that someone was having a joy ride! We have to make sure it survives the factory driving test before handing it gently to you!

Tesla is just like a beast. As soon as it is born, it got "floored" right away (slam the accelerator).

riceuguy | June 12, 2013

I sure hope not...I've spent the first 2,000 miles doing exactly the opposite of how I started out with my last car!

dbrooks | June 12, 2013

Getting mine next week too, and I can't stand it either, the wait I mean. C'mon June 20!!!

lph | June 12, 2013

Poor tires, they did not have time to break-in. But who cares!

Runar | June 13, 2013

You do need to break in the tiers? Get rid of the "oil" film on them?

Winnie796 | June 13, 2013

Drive it like you stole it!

hnashif | June 13, 2013

I have about 1300 miles and still can't wipe the grin of my face. Oh wait! Are you asking about a break-in period for the car not the driver?

hsadler | June 13, 2013


"I wanted to be sure I could floor it with a maximum tesla grin on my face the moment I got behind the wheel."

I suspect there has been a substantial increase in speeding tickets at the freeway entrance leaving the Fremont factory.

Like shooting fish in a barrel.

AmpedRealtor | July 8, 2013

To those of you who are "flooring it" on a regular basis, have you noticed any unusual noises coming from the rear of your vehicle? I've heard reports of balloon noises, etc. After seeing this thread, it got me to thinking… in many of these reports, the issue was not there in the beginning but developed over the course of the first few thousand miles driven.

I wonder if gentler acceleration during those first few thousand miles might alleviate this issue?

Brian H | July 8, 2013

Not humanly possible. Fuggedaboudit.

aaronw2 | July 8, 2013

No funny noises from my car other than the whine from the gears as I take off like a bat out of hell :)

According to a friend of mine who works on the drive train design at Tesla the soft whine in the back is due to the helical gears meshing. There shouldn't be any other sounds though I too have heard some people reporting balloon noises. The first time I floored it after picking up my car from the Tesla service center after they tightened things up a bit in the rear and updated it to 4.5 I heard a funny sound but haven't heard it since. I tend to floor it often.

AmpedRealtor | July 8, 2013

Okay, thanks for the info. Just to be safe, I'm going to drive mine very conservatively for the first few thousand miles just to make sure. Better safe than sorry.

EcLectric | July 8, 2013


I noticed an unusual noise from the rear of the vehicle once - the first week I had it. It was this annoying 'whoop' going up and down. Then I had to pull over and sign a piece of paper...

MarkV | July 8, 2013

I am not sure if other factors were in play or not but when I started my normal commute to work I wrote down the distance, kWh used and average kW/mile for my standard drive. I noticed that the average power draw for that same drive dropped at a fairly steady rate for several days and then leveled off to what I would consider a normal variance. Anyway I have always wondered if the steady decrease was due to the "rough spots" or equivalent being rubbed off of the gear contact points. Or maybe a phenomena associated with the controller and associated circuitry. I do not believe there is anything one could do to affect this process if indeed there was something going on. Just an observation that I noticed.

redders | July 8, 2013

Tam. You fell for that? I asked the same question - were you guys flooring my car in test drive.

Uh yeah, but it was purely for QC reasons....

Yeah, right.......

Brian H | July 8, 2013

tire wear-in? Improved rolling resistance?

AmpedRealtor | July 8, 2013

rotfl @ EcLectric - you had me going! LOL

Tâm | July 8, 2013

I've been "flooring" the accelerator of my standard 85kWh Model S any chance I can for the past 6 months, for about 17,000 miles.

By the way, not just I, but also about other dozen of family and friends who did as well.

So far, I have not seen or heard any unusual signs or noise at all.

Nubo | July 12, 2013

New tires do require some miles before the mold-release compound is fully worn off. Take care in the wet with brand-new tires.

Also brake pads are not yet at their full stopping power until they are bedded in.

The break-in recommendations for ICE cars are controversial and possibly decades-old anachronisms. I've read opinions that the best thing you can do for a gasoline car engine is to run it real hard for the first 20 miles and then change the oil. Something about properly seating the rings and getting rid of the bulk of initial wear metals right quick.