It a whistling noise coming from my valve cover . And I had to also replace my thermostat about a month ago.
2015 BMW 320i engine problems
moderate 9 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Complaints
9
Recalls
0
Avg fix
$3,100
When does it fail?
Of the 9 engine complaints filed for the 2015 BMW 320i, here's the actual mileage breakdown — failures cluster heaviest at 100,000-125,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Engine accounts for 27% of all owner complaints filed against this vehicle, across 4 categories tracked.
No new NHTSA engine complaint has been filed on this vehicle in over 6 years — the issue may be aging out of the active population.
What owners are reporting 5 most recent
Bought a brand new BMW 320i I have had it for 45 days with 1548 miles on it. I was driving vehicle this morning driving posted speed limit of 70 MPH on highway. My car went into "limp mode" and dropped down to 20 MPH and would not go over any faster. Display says "drive train malfunction" I drove my car on side of the road at 20 MPH on the side of road until I made it to work. This was very…
The contact owns a 2015 BMW 320I. The contact stated that on several occasions while driving at various speeds, the vehicle started overheating. The contact stated that the check engine warning light was illuminated. The vehicle was steered to the side of the road and inspected. The contact stated that he observed a burning odor coming from the engine compartment. The vehicle was taken to an…
On July 4, 2023, my kids and I were in Tifton, GA shopping. My car just cut off in the middle of the road. The only way I could get it to turn back on was by turning the car completely off and then turning the car back on. I was in the middle of the road and almost got run over. My car had gas in it and wasn't acting up prior to this happening. I believe that this problem has to do with the…
Timing chain guide failure, causing engine to stop working
Had engine trouble with your 2015 BMW 320i?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the engine problem on the 2015 BMW 320i?
It's a documented issue but not catastrophic. 9 complaints have been filed. Repairs average $3,100 and most owners catch it before it causes a breakdown.
At what mileage does the engine typically fail?
Based on the 9 complaints filed, engine issues most often appear around 72,294 miles. Some report problems earlier; some make it well past 150,000 with no symptoms. Maintenance habits matter — vehicles that received timely fluid services and were not regularly overworked tend to last longer.
What does it cost to fix?
Independent shops typically charge around $3,100 for engine repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to engine?
No active recalls currently cover engine issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2015/BMW/320i.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.