Have you checked your oil level?

 

Images in my rearview are fuzzy at idle due to vibration and I always thought that was normal ... everything sound ok? How extreme is this vibration and is it a new development or has it been that way since purchase?

 

I'll check my oil shortly, but there's been no sign of burn or leak since it left the dealership. It's not a consistent vibration, just an every so often very slight change in the cadence that I can feel in the pedals and wheel. I'd say it's fairly recent but I may have just missed it until now. Everything sounds fine though.

 

Since day 1 with 8 miles. Only upon overnight type cold start lasting only while at fast idle. Still the case at 2000 miles with overnight lows in the mid-70s F.

 

Am I the only one that things that a car like this is probably supposed to vibrate a bit at idle?

This ain't a Camry. It's a stiff, rigid car that is going to transfer engine and drivetrain vibration through to the occupants.

 

I'm not concerned that it's vibrating, I'm concerned that it is a vibration that's off rhythm from the normal vibration, making it seem like it's missing.

 

I don't want to worry you unnecessarily, but that kind of missing can be an early indicator of a blown ringland. If it persists and you can't find another reason, you might want to get compression checked.

Edit: as others have said, you obviously get frequent load changes with the AC on, but that is easily eliminated since you can hear when the AC clutch engages. Hopefully, it's nothing.

 

Any way to log the car? AP? Tactrix?

 

No, no logging equipment.

 

Just take it to the dealer expressing your concerns. At least have them inspect it and make sure they document your case. That is the best part of having a new car since it is under warranty and not your problem.

 

Maybe it's a radiator or ac fan turning off/on. Engine RPM will change slightly due to the increased load.

 

Mine does the same identical thing. Just picked up the car on Saturday. Only has 200 miles on it now.

Seems to only be on cold starts. Once it has temp, it goes away. I consider it normal. My 2004 Forester does it and my old mans 2002 Forester does it.

Just runs in the family, I guess.

I wouldn't put too much into it. My car runs great.

 

Normal! Hell I feel like mines gonna stall out sometimes..

 

Ahhh I didn't even consider the radiator fan; I bet that's it. It's funny, on my old car I'd just ignore anything this minor that I felt, but when you belt out the money for a new car, any minor noise or feeling and you're thinking F***, it's gonna grenade! Thanks for the help guys.

 

it's normal for the boxer engine to jump around a bit when idleing.....they are not going to idle glass smooth as say a v12. Also during break in miles not taking the engine over 4000 RPM for the first 1000 miles could lead to some minor deposits on the plug/s....a "highway tuneup" will clean them off...taking a long ride at 60+ MPH. If all your driving is city stop and go this can occur.

 

Another cold start with the vibration here. Not at all severe at any other time though.

 

Same here, with 3750 miles (2015 STi Limited DGM). Once the car is warmed up and been driven it idles pretty smooth then.

 

Same here. Since day one, slight idle vibration, almost feels like an old school "cammed" v8.

 

Another data point: I test drove a 200 mile '15 back in mid-May: same slight lumpy "cold" idle even at 90F ambient temp.

 

STis are one of noisiest cars At idle. They sound broken. Its normal.

 

ive noticed this on my 15 sti as well. figured it was the fans comeing on. ive done a few data logs and everything came back clean....... well except for my af leurn but that was me forgetting to tighten up my bp valve when i had the intercooler out last.

 

I picked my car up with 6 miles, on the stock tune it seriously felt like it was misfiring ideling, drove fine however, after being on the cobb stage 1 ots and a protune, my ideling is much better.

 

I've just recently started noticing exactly what OP is describing in my '15 as well. Mine has just over 5k miles on it. Hopefully it's nothing serious.

 

I don't want to worry you unnecessarily, but that kind of missing can be an early indicator of a blown ringland. If it persists and you can't find another reason, you might want to get compression checked.

Edit: as others have said, you obviously get frequent load changes with the AC on, but that is easily eliminated since you can hear when the AC clutch engages. Hopefully, it's nothing.

My car brand new felt much like it was misfiring, on the stock tune, I had an older wrx that actually was misfiring bad, I am familiar with the feeling,

I went cobb ots stage 1 + SF intake for a week, and a protune, and my idel is so much smoother its crazy, I remember I noticed immediately when I flashed with the cobb ots how much smoother it felt ideling.

 

I am now at 5500miles with no loss of oil and shes still purring like a kitten

 

I also have that "problem"

It's almost like clockwork; in the morning, 10 seconds after startup, it shakes. It shaked stock, it shakes with cobb ots stage 1. It goes away maybe 30 seconds after. Besides that, car runs A1. Alot of '15s are experiencing this from what I can find online.