2012 BMW 135I Engine Problems
- Complaints
- 10about this part
- Share
- 53%of 19 total for the year
- Median mileage
- 40,000miles
- Trend
- Not enough dataFewer than 15 complaints, too few for a reliable trend.
NHTSA recorded 10 complaints about the engine of the 2012 BMW 135I, 53% of the 19 complaints for this model year. Where a mileage was given, the median is 40,000 miles.
Fewer than 15 complaints name this part, so treat the figures as a rough indication only.
Example complaints
Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.
“When I had fewer than 50k miles, my thermostat broke suddenly while I was driving. I had no previous issues or warning lights. Since that repair, I have had 2 coolant leaks, and one related pipe crack. This week, I had air in my coolant system and had to have it drained. These all appear to be related.”
NHTSA complaint #11307058, filed 2020-02, 50,000 miles“Vehicle stalls when accelerating from a stopped position. Several time, while stopped at an intersection with crossing traffic, I attempted to drive through the intersection but the car failed to accelerate. I tried shifting from auto to manual but the car still failed to accelerate for at least 5 seconds at which time it jolted forward. The issue started at around the 50k mile mark 3 years ago and continues still today (~90k miles). …”
NHTSA complaint #11402494, filed 2021-03, 55,000 miles“I have brought my car into schomp Bmw twice for this issue, the latest being last week telling them I believe there is a recall for my vehicle and it feels as if it will stall as I am turning a corner or stopped and begin accelerating. They showed no recall and hooked my car up to computer and no codes came back with any issues. I am really scared that my car will stall in the middle of turning in front of traffic. It has hesitated to where I have had to press the accelerator to the floor to get the car to move. I am afraid for my safety and for the safety of others. …”
NHTSA complaint #10598161, filed 2014-06, 33,000 miles“Vehicle almost stalls when accelerating from a stop. Vehicle will also surge forward when vehicle comes to a stop. Both issues are worsened when the temperature is warm outside and the air conditioning is on. Have taken vehicle to the Bmw dealer several times to correct, but they never find anything wrong.”
NHTSA complaint #11222668, filed 2019-06, 56,000 miles“******* delete voq ******* this complaint is being marked for deletion because it is requested by the consumer that they wish to have it removed*djr ******* delete voq *******”
NHTSA complaint #11191706, filed 2019-03, 50,700 milesRelated service bulletins
- 10163029Jun 1, 2019N55 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…
- 10151170Mar 1, 2016N51 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…
- 10151068Feb 1, 2016This Service Information bulletin supersedes SI B07 03 14 dated October 2015. Diagnosing Stored Fault Codes to Help Avoid Repeat Repair Visits. Fault codes stored in vehicles…
- 10147236Sep 1, 2015This Service Information bulletin supersedes SI B12 15 14 dated August 2014. designates changes to this revision SUBJECT N55 with Double-Clutch Transmission: Idle Fluctuates when…
- 10147602Jan 1, 2015SUBJECT N20, N26, and N55 Engines with Injector Electrical Faults. Any of the following symptoms could occur simultaneously with injector electrical faults stored in the DME: z…
- 10147595Jan 1, 2015SUBJECT DME Internal and Valvetronic Faults Set at Cold Ambient Temperatures. The Service Engine Soon light (MIL) can be illuminated with the erroneous internal and Valvetronic…
- 10149287Oct 1, 2014SI B12 14 12 October 2014 Engine Electrical Systems Technical Service This Service Information bulletin supersedes SI B12 14 12 dated February 2014. designates changes to this…
- 10148217Aug 1, 2014N55 with Double-Clutch Transmission: Idle Fluctuates when Stopped. A customer may complain that after coming to a stop, the engine speed intermittently fluctuates from about 500…
- 10150161Nov 1, 2013N55: Engine Difficult to Start at Cold Ambient Temperatures. The complaint may include any of the following symptoms: * The engine stalls immediately after a cold start before…
- 10150065Jun 1, 2013"BMW NA has agreed to extend the emissions warranties of the turbocharger's wastegate to: ??8 years or 82,000 miles, whichever occurs first, as determined from the vehicle's…
Engine: other model years
Other parts of the 2012 BMW 135I
6 complaintsFuel system
5 complaintsAir bags
4 complaintsElectrical system
3 complaintsBrakes
1 complaintsElectronic stability control
1 complaintsOther or unknown
1 complaintsSeats
1 complaintsSuspension
1 complaintsVehicle speed control
1 complaints
← All problems reported for the 2012 BMW 135I
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 27, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.
To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology