2012 BMW 135I problems & reliability
19 owner complaints filed with NHTSA for the 2012 BMW 135I, alongside 6 safety recall campaigns. Last verified Aug 7, 2026. Complaints are unverified reports submitted by owners to the federal Office of Defects Investigation.
Each complaint is counted once (by NHTSA case number), even when it names several vehicles.
Federal crash records (FARS 2020–2023): 2012 BMW 135I vehicles were involved in 2 fatal crashes with 1 occupant death. Involvement counts are not adjusted for how many are on the road and do not imply fault or a vehicle defect.
Most reported problems
| Component | Complaints | Share |
|---|---|---|
| Engine → | 10 | 53% |
| Power Train | 6 | 32% |
| Fuel/propulsion System | 5 | 26% |
| Air Bags | 4 | 21% |
| Electrical System | 3 | 16% |
| Electronic Stability Control (esc) | 1 | 5% |
| Seats | 1 | 5% |
| Service Brakes | 1 | 5% |
| Suspension | 1 | 5% |
| Unknown OR Other | 1 | 5% |
Component groups as classified by NHTSA. A complaint can name more than one component, so shares may sum to more than 100%.
All 11 reported components →Common symptoms owners describe
Keyword analysis of complaint narratives; one complaint can describe several symptoms.
Complaints by incident year
What owners report
“Continuing coolant problems, engine shut off going down the hwy bc overheated////engine not secure-moves around literally/////camshaft timing position sensor code. On Dec 24th I purchased a 2012 BMW 135i convertible from Alboet Motor Sports on Pass Rd in Gulfport, MS. Before I went I specifically asked if the car had…”
Engine · filed May 12, 2023
“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…”
Engine · filed Mar 11, 2021
“Tl* the contact owns a 2012 bmw 135i. The contact stated that while their wife was driving at approximately 45 mph, the vehicle stalled while the power steering ceased with an unknown warning light illuminated. The contact contacted a certified mechanic who informed the contact that the failure was related to nhtsa…”
Electrical System · filed Jun 17, 2020
Verbatim excerpts from complaints filed with NHTSA. Reports are not independently verified.
Federal defect investigations
- Desiccated Air Bag Inflator Rupture
Engineering Analysis EA21002 · opened Sep 17, 2021 · open
Technical service bulletins
104 manufacturer communications (TSBs, service campaigns, warranty extensions) are on file with NHTSA for the 2012 BMW 135I. The 10 most recent:
The electrical system of BMW vehicles has been subject to an ongoing development process over the last few years. This has led to increased demands being placed on the battery. This document covers important information…
B611305 · Service Bulletin/Repair Instructions · issued Jan 11, 2024
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…
B011321 · Service Bulletin/Repair Instructions · issued May 1, 2021
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…
B011321 · Service Bulletin/Repair Instructions · issued May 1, 2021
Diagnosis of Compound Brake System Complaints in M Vehicles: 1. Visible cracks are caused by high thermal stresses during rapid heating and cooling of the brake discs. Braking from high speed with cold brake components…
B340414 · Service Bulletin/Repair Instructions · issued Apr 1, 2021
Power Reduction FC2A82 Intake VANOS and/or FC2 A87 Exhaust VANOS Camshaft Fault: The "Service Engine Soon" (MIL) lamp is illuminated and engine power reduction is perceived. This situation can occur after driving for…
B110208 · Service Bulletin/Repair Instructions · issued Apr 1, 2020
Service Action: CIC - Install Navigation Road Map Database 2013. Before delivering affected vehicles to the customer, the Car Information Computer (CIC) road map database 2013 must be installed onto the CIC internal…
651512 · Service Bulletin/Repair Instructions · issued Jul 12, 2019
"Erroneous CC Message "Remote control! Do not switch off the engine" is Displayed. An erroneous CC message, "Remote control!" " Do not switch off the engine" is displayed in the Central Information Display (CID). The…
613312 · Service Bulletin/Repair Instructions · issued Jul 10, 2019
Convertible Top Does Not Open Properly. When opening the convertible top, the interior cover flap remains open. CAUSE: The cable for the flap operation is either kinked or dislodged.
540810 · Service Bulletin/Repair Instructions · issued Jul 10, 2019
Wear Marks on the C-pillar Area of the Soft Top Canvas. Wear marks may form on the soft top cover in the C-pillar area, above or below the canvas seam and or along the seam. These wear marks may be visible on one or…
541409 · Service Bulletin/Repair Instructions · issued Jul 10, 2019
"Outside Door Mirror Moves when Locking or Unlocking the Vehicle. The door mirror tilts immediately after unlocking or locking. The mirror position does not correspond to the memory position preset by the customer…
513608 · Service Bulletin/Repair Instructions · issued Jul 10, 2019
TSBs are repair guidance manufacturers send to dealers — they are not recalls and repairs are not automatically free. Full documents are available on NHTSA’s site.
Safety recalls
The 2012 BMW 135I has 6 NHTSA recall campaigns — recall repairs are free at franchised dealers regardless of the vehicle’s age.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →Buying a used 2012 BMW 135I?
- · Decode the seller’s VIN with our free VIN decoder to confirm the exact year, engine and trim.
- · Check for unrepaired recalls by VIN on NHTSA’s official lookup — recall repairs are free.