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Just picked up a 2015 Crosstrek! This is my third Subaru and I'm very excited. It has 10,800 miles on it.

My concern is this: it idled VERY rough after not starting for a while, also after I turn it off after a commute it "clicks" and makes weird sounds from the wheel wells. It's pretty intermittent. Not sure what it is.

If these are known issues with a solution please let me know!
 

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Clicking from the wheel well after you drive it is normal. That's the exhaust pipes cooling. Normal on any car. Clicks inside the car are various relays turning off. Also normal. Many people don't realize that vehicles do A LOT of things after you take the key out. The rough idle Haynes on mine too. Part of it is the boxer engine design. Being horizontally opposed it causes the engine to gently shake right and left. Not a big deal. Could also be caused by bad gas. Have you filled up at a cheap place? Or has the car sat for a very long time? Remember, a redline a day keeps the carbon away. Seriously. Floor it once in awhile. Happy motoring.
 

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Clicking from the wheel well after you drive it is normal. That's the exhaust pipes cooling. Normal on any car. Clicks inside the car are various relays turning off. Also normal. Many people don't realize that vehicles do A LOT of things after you take the key out. The rough idle Haynes on mine too. Part of it is the boxer engine design. Being horizontally opposed it causes the engine to gently shake right and left. Not a big deal. Could also be caused by bad gas. Have you filled up at a cheap place? Or has the car sat for a very long time? Remember, a redline a day keeps the carbon away. Seriously. Floor it once in awhile. Happy motoring.
Took the words right out of my mind!

If you're filling up with cheap fuel, you may want to consider using top tier gasoline.
 

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Clicking from the wheel well after you drive it is normal. That's the exhaust pipes cooling. Normal on any car. Clicks inside the car are various relays turning off. Also normal. Many people don't realize that vehicles do A LOT of things after you take the key out. The rough idle Haynes on mine too. Part of it is the boxer engine design. Being horizontally opposed it causes the engine to gently shake right and left. Not a big deal. Could also be caused by bad gas. Have you filled up at a cheap place? Or has the car sat for a very long time? Remember, a redline a day keeps the carbon away. Seriously. Floor it once in awhile. Happy motoring.
I've noticed something similar while idling at times. It feels like "jostling," and sounds some what like you described as shaking the car right and left. I haven't been driving my 2014 Subaru XV Crosstrek Hybrid long enough to be certain of a pattern, but it seems to happen earlier on in the driving day, perhaps after being driven a short distance, sitting for awhile, then being restarted.

So that would be normal? Because at other times it's nice and still while idling.

Also, why is "flooring it" helpful?

Thanks!
 

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Flooring it once in a while basically cleans out your engine. Easy driving allows gunk and other crud to build up in the engine. Without any kind of hard driving, long-term longevity severely suffers.
 

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My 17 Crosstrek idles at about 2000 RPM when start-up in the norming, and it is normal. It makes the car "warm up" faster. As for the noise, it's a Crosstrek, the engine noise is loud when reving from 2000 RPM to higher. If you want a more quiet car, you should get the Impreza hatch (for the same look).

Or you could start planning to sound proofing the car as the stock material is quite inadequate.
 

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Check your MAP sensor also the plastic intake manifold for leaks or separation at connections and in the bends
 
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