SERVICE ACTION: N54T ENGINE - INSPECT AND REPLACE INJECTOR(S). The piezo-type fuel injectors may cause a rough running at start-up or rough running while at idle.
full bulletin at NHTSA ↗2011 BMW M3 engine problems
moderate Owners of the 2011 BMW M3 have filed 15 NHTSA complaints about the engine, typically surfacing around 46,000 miles at roughly $3,100 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See engine across all vehicles →
Failure mileage
Complaints
15
Recalls
0
Avg fix
$3,100
| Model year | engine complaints |
|---|---|
| 2008 M3 | 18 |
| 2009 M3 | 3 |
| 2010 M3 | 3 |
| 2011 M3 (this page) | 15 |
When does it fail?
Of the 15 engine complaints filed for the 2011 BMW M3, here's the actual mileage breakdown — failures cluster heaviest at 25,000-50,000 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 37% of every owner complaint on file for this vehicle — the dominant problem area across 4 categories tracked.
Among the 7 model years of BMW M3 in our records for engine problems, this one ranks #2 by owner-complaint volume.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering engine on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
N55 Engine: Various Faults Stored in DME Related to VANOS and Camshaft Position. A rattling noise can be heard from the engine compartment; the engine has a loss of power; and the Service Engine Soon lamp is illuminated. One or more of the following faults may be stored. E70, E71, E82, E88, E90, E92 and E93: 2D5A - VANOS, intake: control fault, camshaft sticking 2D5B - VANOS, intake: control fault, position not reached 2D60 - VANOS, exhaust: control fault, camshaft sticking 2D61 - VANOS, exhaust: control fault, position not reached 2D9F - camshaft input sensor: signal implausible 2DA1 - Camshaft exhaust sensor: signal implausible 300C - Camshaft input sensor: signal high 300D - Camshaft inpu
full bulletin at NHTSA ↗The engine?s intake charge-air duct limited warranty extension to 10 years/120,000 miles applies to ?eligible USspecification
full bulletin at NHTSA ↗N20, N26, N55, N63TU, S63TU and S55 Engines: Bosch Injector ETK Part Number Error What's New: ? Procedure change: indentifying injector type using an ISTA test plan. . The current version of the ETK incorporates multiple part number errors for the Bosch type injectors. Ordering the injectors by VIN number or manual identification in ETK may result in an incorrect part number.
full bulletin at NHTSA ↗N51 Engine: Service Engine Soon Lamp Illuminated - Loss of Power and Various Faults Stored in the DME. The customer complains that the Service Engine Soon lamp is illuminated. The vehicle has lost power; the engine cranks but will not start; and various faults are stored in the DME for engine misfire and/or mixture adaptations. CAUSE The vehicle has lost fuel system delivery pressure due to a loose or split fuel line inside the fuel tank. The failure is related to an unfavorable stacking of tolerances between the rubber fuel hose and the plastic regulator nipple or deterioration of the rubber hose construction material.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners of 2011 BMW M3s consistently report sudden, catastrophic S65 engine seizure caused by rod bearing and main bearing failure. Failures occur between 29,000 and 63,000 miles during normal driving or routine gear shifts, often with no check engine light or oil warning. When warning signs appear, they're vague: ticking or tinging noises, erratic oil level warnings, or abrupt power loss.
In several cases, the engine automatically shifts to neutral and shuts off without driver input—hazardous when traveling at highway speeds. One owner nearly collided with multiple vehicles after losing steering and brakes. Metal shavings consistently appear in the oil pan once the bearing fails.
Owners and cited experts attribute the failures to inadequate journal clearance in the original S65 bearing design, worsened by manufacturing tolerance stacking that produces excessively tight bearing clearance. One owner using BMW-approved 10W-60 oil still experienced crankshaft and bearing bush burnout.
Complete engine replacement is mandatory; no rebuild is possible due to cracked bearing saddles and widespread damage. Replacement costs roughly $30,000. BMW has not issued a recall despite owners' documentation that the manufacturer is aware of the defect.
Same BMW M3 engine reports on nearby years: 2008
Failure modes owners describe
Rod bearing and crankshaft failure
Rod bearings and/or main bearings fail catastrophically, causing metal debris to circulate through the engine, seizing cylinders and rendering the engine inoperable. Owners report the failure occurs with little to no warning, often during normal driving or low-stress shifting. Experts cited in complaints attribute the failure to inadequate journal clearance in the original S65 bearing dimensions, compounded by tolerance stacking that results in tighter-than-ideal bearing clearance. The crankshaft and bearing bushes become over-worn and burnt out.
When: Between 29,000 and 63,860 miles; most failures occur in the 40,000–55,000 mile range. One failure at 29K miles during normal driving; others at 42K, 43K, 53K, 63K.
Symptoms owners cite: Tinging or scraping noise from engine, especially in lower gears; Ticking noise that gradually becomes louder; Sudden loss of power during gear shifting; Engine automatically shifts to neutral without driver input; Engine shuts off without warning; Steering freezes and power brakes fail when engine dies; Cracking or rattling noise from engine; Metal shavings found in oil pan; Vehicle does not restart after stalling; Oil warning light behaves erratically (low, then high reading); One case reports no warning signs at all before seizure
Repairs/costs cited: Complete engine replacement required; engines cannot be rebuilt. Owners cite replacement costs around $30,000. One owner reports engine cracked main bearing saddles preventing rebuild. Another reports rod bearing disintegration on cylinders 2 and 5.
Engine air intake water intrusion (hydro lock)
Engine air intake becomes filled with water, clogging the hydro lock and preventing normal engine operation. This failure occurred at relatively low mileage and was diagnosed at a dealer but not repaired.
When: 29,000 miles
Symptoms owners cite: Clogged hydro lock preventing normal engine operation
Repairs/costs cited: Diagnosed by dealer as clogged hydro lock; no repair was completed per the complaint.
O2 sensor failures and throttle body actuator malfunction
O2 sensors fail repeatedly and throttle body actuators malfunction, placing the vehicle into limp mode. One owner also mentions rod bearing issues in the same complaint, suggesting potential interconnected system failures or that these ancillary failures may signal underlying engine problems.
Symptoms owners cite: O2 sensors fail repeatedly (replaced 3 times); Throttle body actuators go bad; Vehicle enters limp mode; Engine cuts off at highway speed (65 mph)
Synthesized from 15 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 4 most recent
At 63,860 mile the s65 engine in my 2011 BMW m3 failed. Dealer diagnosed engine bearing failure. Failure occurred while driving.
Engine knocking. Connecting rod bearing and main bearing failure resulting in required engine replacement. Engine not able to be rebuilt due to cracked main bearing saddles.
I was driving casually when the motor suddenly shut off. No noise indicating engine failure ever happened. I coasted off the road and tried to restart. Nothing but a click. Eventually tried replacing starter motor but that didn't work. No engine lights or codes ever popped up. Turns out engine seized due to failed rod bearings.
I was driving my vehicle under normal conditions traveling around 45mph. As I switched gears from 2nd to 3rd I noticed an immediate loss of power. My vehicle automatically shut off. I pulled over to the side of the road and was not able to restart my car. After the dealership checked the car they said there was an engine failure most likely due to rod bearing failure.
Had engine trouble with your 2011 BMW M3?
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 2011 BMW M3?
It's a documented issue but not catastrophic. 15 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?
Across the 13 complaints that reported odometer mileage, most engine failures cluster between 40,600 and 60,000 miles, with the median around 46,000. A quarter of owners report trouble before 40,600; a quarter make it past 60,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
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/2011/BMW/M3.
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.