CLASS ACTION SETTLEMENT: N54/N54T/N55 ELECTRIC ENGINE COOLANT PUMP . With the court's FINAL approval, BMW of North America, LLC (BMW NA) has entered a nationwide settlement with the plaintiffs in the following class action: Oliver, et al v. BMW NA, et al
full bulletin at NHTSA ↗2011 BMW 135i engine problems
severe Owners of the 2011 BMW 135i have filed 8 NHTSA complaints about the engine 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 →
Complaints
8
Recalls
0
Avg fix
$3,100
| Model year | engine complaints |
|---|---|
| 2011 135i (this page) | 8 |
| 2012 135i | 4 |
1crash
1injury
When does it fail?
Of the 8 engine complaints filed for the 2011 BMW 135i, here's the actual mileage breakdown — failures cluster heaviest at 75,000-100,000 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 26% 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 13 years — the issue may be aging out of the active population.
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.
CLASS ACTION SETTLEMENT: N54/N54T/N55 ELECTRIC ENGINE COOLANT PUMP . With the court's FINAL approval, BMW of North America, LLC (BMW NA) has entered a nationwide settlement with the plaintiffs in the following class action: Oliver, et al v. BMW NA, et al
full bulletin at NHTSA ↗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 ↗N55 ENGINE: FC 28A0 OR 101F01 THROTTLE VALVE OPENING ANGLE. The engine malfunction warning is illuminated and one of the following fault codes are stored in the DME shortly after programming the vehicle or with a customer complaint.
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 ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
What owners are reporting 4 most recent
Engine acceleration lag. The car hesitates when the gas pedal is pushed down. This occurs when it is moving at a slow speed of 5 to 10 MPH and at a halt. It creates a dangerous situation if you are merging with traffic or trying to enter traffic from a side street. When the gas pedal is depressed it can be as long as 2 to 3 seconds before the engine accelerates. *tr
Tl* the contact owns a 2011 BMW 135i. While driving 60 MPH, the vehicle overheated and lost power. The vehicle was taken to a dealer where it was diagnosed that there was a water pump failure. The manufacturer was made aware of the issue. The failure mileage was 90,000.
BMW Series 135I2011 - Engine/Vanos bolts failed/failing! When it's started, you can total tell there is an issue with it...Car is basically NON-Drivable due to this condition due to safety concerns! The vin is not being covered by the recall due to but this is a SERIOUS issue! This needs to be covered by BMW! We've taken it to the mechanic who said this needs to be towed to the dealership due to…
Rod bearings failure which could cause engine seizing while driving.
Had engine trouble with your 2011 BMW 135i?
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 135i?
It's a meaningful issue. 8 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $3,100.
At what mileage does the engine typically fail?
Based on the 8 complaints filed, engine issues most often appear around 59,825 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/2011/BMW/135i.
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.