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EnginePart report

2015 Subaru Impreza Engine Problems

Complaints
10about this part
Share
13%of 77 total for the year
Median mileage
31,500miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 10 complaints about the engine of the 2015 Subaru Impreza, 13% of the 77 complaints for this model year. Where a mileage was given, the median is 31,500 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“I have a 2015 Subaru Impreza with 31,000 miles (out of warrantydue to age). Thecar has developed a small oil leak from the cam carrier cover (aka valve cover) onto the exhaust manifold and the o2 sensor causing a lot of smoke that then enters the cabin. Subaru's estimate $4973.87. Reading Subaru forums I've come to discover that this is a pretty common problem in vehicles dating between 2012 and 2017. Due to the smoke it creates in the cabin, and the health risks there in, and the short life of the part in question, I'd recommend a recall be issued.”

NHTSA complaint #11388909, filed 2021-01, 31,500 miles

“Intermittent failure of the CVT select shift mechanism that causes the key to get locked in the ignition switch when the car is in park. This problem is a result of the failure of plate guide-b, part number 35122fj033. This ongoing problem is subject to Subaru service bulletin 16-112-18r dated 03/15/2018 and revised as of 02/20/2019. This Subaru identified safety issue affects multiple models. Cost of part replacement is not offset by Subaru with 100% of the cost required by the vehicle owner.”

NHTSA complaint #11298451, filed 2020-01, 59,925 miles

“Soon after delivery, there was a noticeable lag ( 2-20 seconds) between the time the accelerator was depressed and when the vehicle accelerated. At times this lead to dangerous situations. Dealer said there was no problem. The accelerator module was replaced ( not at dealer) and there were no problems for a time, now the same lag has begun to occur at random times, especially after slowing to less than 20 miles per hour. Note:-- this is a problem for one of two drivers of the car. Apparently the position of the driver's foot on the accelerator makes the difference. …”

NHTSA complaint #10909314, filed 2016-09, 200 miles

“All of a sudden, with no reason whatsoever, my daughter's car has rod knock with less than 100,000 miles on it. Bought this Subaru for my daughter so she would have a car that would last a long time and she would be safe. Maintenance was kept up at our local mechanic religiously. I am saddened and disappointed in the mechanical performance of this vehicle. Started with lights going out early in ownership when it was new, and now this. I have a Subaru Impreza as well and am strongly considering trading it in for a Honda. …”

NHTSA complaint #11537225, filed 2023-08

“I purchased a Subaru for reliability and safety reasons. This car has placed my family in some dangerous situations. Every time the outside temp is 90+ degrees F and it is driven on a road trip of 200+ miles, the car's acceleration shuts off. There is never any warning or check engine/trans lights until after this happens. Nate Wade Subaru in Salt Lake City cannot find any codes and does not know how to help. The car will not restart after being turned off, even after waiting up to an hour. We have had to tow it. The last incident taking place 7/30/2022 with our 19 year old son driving. …”

NHTSA complaint #11477430, filed 2022-08

Related service bulletins

Engine: other model years

YearComplaintsShare of year
2025120%
202426%
202217%
202117%
202034%
201984%
2018117%
20171411%
201634%
20151013%
20142019%
20137530%
20125523%
201135%
2010715%
20091313%
2008137%
2007812%
200659%
200557%
200312%
200231%

Other parts of the 2015 Subaru Impreza

Electrical system
20 complaints
Other or unknown
14 complaints
Transmission and drivetrain
11 complaints
Air bags
7 complaints
Steering
6 complaints
Vehicle speed control
6 complaints
Brakes
4 complaints
Visibility (wipers, defrost, mirrors)
4 complaints
Body and structure
3 complaints
Wheels
3 complaints
Fuel system
2 complaints
Engine cooling
1 complaints

← All problems reported for the 2015 Subaru Impreza

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology