10.0

really awful
Crashes / Fires:
0 / 0
Injuries / Deaths:
0 / 0
Average Mileage:
0 miles

About These NHTSA Complaints:

This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.

So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.

2005 BMW 525 engine problems

engine problem

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2005 BMW 525 Owner Comments

problem #1

Feb 122024

525

  • miles

A D V E R T I S E M E N T S

I am encountering persistent issues with my 2005 BMW 525i. Despite having replaced several critical components, including the ignition coils, spark plugs, mass air flow sensor, and throttle body sensors, the vehicle continues to experience performance problems, specifically failing to advance beyond the fourth cylinder when driving uphill. After conducting numerous diagnostic tests, I have concluded that there may be an air leak in the intake manifold. Additionally, after prolonged use under these conditions, the positive battery cable from the trunk has shown signs of overheating, evidenced by smoke, which I suspect is related to repeated uphill driving. While the vehicle performs adequately on flat surfaces, it exhibits hesitation and jerking once it surpasses the fourth cylinder.

- Perris , CA, USA

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