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.

2020 BMW M340i fuel system problems

fuel system problem

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2020 BMW M340i Owner Comments

problem #2

Oct 102022

M340i

  • miles

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

Unable to read oil level, high or unusually alarming oil pressure. High oil pressure codes

- Hanover Park, IL, USA

problem #1

Apr 192023

M340i

  • miles
Oil pump appears to have failed. Told plastic components inside pump. BMW issued a new part number and changed pump to all metal internals. This is standard on later production dates now. Pump failure causes engine failure and oil gauge failure to read out. Head gasket replacement which may or may not be related.

- Racine, WI, USA

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