Most common 2012 BMW 135i problems
Share of the 19 complaints; one complaint can involve more than one system. "~" is the median mileage when the problem started.
BMW 135i complaints by model year
Best 135i years: 2013, 2010. Years to avoid: 2008. Compare all years →
2012 BMW 135i recalls (6)
Air bags › Frontal › Driver side › Inflator module
BMW of North America, LLC (BMW) is recalling certain 2008-2013 128i and 135i Convertibles, 128i, 135i, and M Coupes, 2007-2010 X3 30si and X3 xDrive30i, 2013-2015 X1 sDrive28i, X1 xDrive28i and X1 xDrive35i, 2007-2013 328i, 328i xDrive, 335i, 335is, 335i xDrive and M3 Coupes, 2006-2011 328i, 328xi, 328i xDrive, 325i, 325xi,…
Remedy: BMW will notify owners, and dealers will replace the driver air bag. On X5 and X6 vehicles, only the inflator will be replaced. All repairs will be performed free of charge. The recall began March 11, 2020.
Electrical system › Wiring
BMW of North America, LLC (BMW) is recalling certain 2008-2012 BMW 128i, 135i, 135is Coupes and 128i, 135i Convertible vehicles. The wiring and electrical connectors in the blower-regulator wiring harness may overheat.
Remedy: BMW will notify owners, and dealers will inspect the blower-regulator wiring harness, and replace it with a new part, free of charge. The recall began October 4, 2019.
Power train › Driveline › Constant velocity joint
BMW of North America, LLC (BMW) is recalling certain 2011-2012 135i Coupe, 1 Series M Coupe and 135i Convertible vehicles, 2011 Z4 sDrive 35i, 335i, 335d, 335i Coupe, 335is Coupe, 335i Convertible, 335is Convertible, 535i, 535i xDrive, 535i Gran Turismo and 550i xDrive Gran Turismo vehicles and 2012 740i and 740Li vehicles.
Remedy: BMW will notify owners, and dealers will inspect the rear driveshaft CV joint and, based on its production date, will replace it, free of charge. The recall began April 21, 2017.
Air bags › Frontal › Driver side › Inflator module
BMW of North America, LLC (BMW) is recalling certain model year 2008-2013 128i and 135i coupes and convertibles and 1 Series M coupes, 2006-2011 325i, 325xi, 328i, 328xi, 328i xDrive, 330i, 330xi, 335i, 335xi, 335i xDrive Sedans, 2009-2011 335d sedans, 2006-2012 325xiT, 328i and 328xi sports wagons, 2007-2013 328i, 328xi, 328i…
Remedy: BMW will notify owners, and dealers will replace the driver's frontal air bag module or inflator depending on the vehicle model, free of charge. The recall began March 9, 2018.
Engine and engine cooling › Engine
BMW of North America, LLC (BMW) is recalling certain model year 2010-2011 128i Coupe, 128i Convertible, 328i Sedan, 328i xDrive Sedan, 328i Coupe, 328i Convertible, 328i Sports Wagon and Z4 sDrive 30i, 2011-2012 135i Coupe, 135i Convertible, 335i Sedan, X5 xDrive 35i, and X6 xDrive 35i, 2011 335i xDrive Sedan, 335i Coupe, 335i…
Remedy: BMW will notify owners, and dealers will replace the four VANOS housing bolts for both VANOS units (intake and exhaust), free of charge.
Electrical system › Wiring › Fuses and circuit breakers
BMW is recalling certain model year 2008-2012 1-Series coupes and convertibles manufactured December 2007 through September 2011; and 2007-2011 3-Series coupes and convertibles manufactured March 2007 through October 2011; 2007-2011 3-Series sedans manufactured March 2007 through October 2011; 2007-2011 3-Series sports wagons…
Remedy: BMW will notify owners, and dealers will replace the positive battery cable connector and secure it with an improved method, free of charge. The recall began on March 13, 2013.
NHTSA defect investigations
Federal safety investigators have looked into a possible defect involving the 2012 BMW 135i:
Desiccated Air Bag Inflator Rupture
From 2000 through 2017, Takata produced millions of air bag inflators using two types of phase-stabilized ammonium nitrate ("PSAN") propellant -- propellant 2004 and propellant 2004L. After prolonged exposure to high temperature cycles and humidity, inflators using propellant 2004 can degrade, causing the propellant to burn too quickly when ignited.
What 2012 BMW 135i owners say
Engine & cooling
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 any mechanical or cosmetic damage and [redacted] lied and said nothing was wrong. After signing all documents she started pretending to look for the title. She promised i would get it in a week or so in the mail. The car had a ruined engine and radiator, missing front air intake ducts completely, who knows what else. They only paid 2700 bc it states stationary with mechanical damage from auction. I paid the $10,700 in cash they charged me. I'm sick to death just thinking about it. She will not repair, refund or anything like that. …
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). I am not seeing my vehicle listed under recalls related to loss of electrical power/stalling from 2/7/2013 and have not had any recall notifications related to my car since 2017. I have been attempting to resolve a constant problem with cracking sounds from front suspension when turning. To date, I have had the entire front suspension rebuilt including; control arm assy, sway bar assy, bearing, struts, and u-joints. …
Transmission & drivetrain
Vehicle exhibits an intermittent hesitation (like a stall) where there is an apparent total loss of power at low speeds (coasting) or from stopped. On several instances this has happened while in a left turn lane with oncoming traffic and creates a serious safety hazard. The vehicle more frequently, but not always surges in rmp without throttle input when coming to a stop. In many instances, the vehicle lurches forward and extra braking is required. This has resulted in near miss, rear end, assured clear distance issues. These two problems occur during city/residential driving including at slow speeds through school zones (a major concern). I purchased this car used, but with low mileage and encountered these issues on the day of delivery. Dealer reprogrammed an engine control module according to a BMW safety bulletin which I found online. …
Reference: http://www.1addicts.com/forums/showthread.php?t=1263580 BMW 135i DCT transmission oil pan/gasket started leaking due to the constant hot temperature from the exhaust causing part to deform. Leak was not detectable until transmission fails, causing car to be stranded.
Fuel & propulsion system
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). I am not seeing my vehicle listed under recalls related to loss of electrical power/stalling from 2/7/2013 and have not had any recall notifications related to my car since 2017. I have been attempting to resolve a constant problem with cracking sounds from front suspension when turning. To date, I have had the entire front suspension rebuilt including; control arm assy, sway bar assy, bearing, struts, and u-joints. …
I was stopped at a traffic light so when the light turned green for the left turn I turned onto the middle lane of a 6 lane highway and started to accelerate when suddenly there was a vibration and the suspension light came on so I slowed down and moved to the far right lane where I noticed I had no acceleration. I limped into a parking lot and the car seemed to be vibrating and running rough so I shut it down and walked home. After towing it to BMW of daytona I got the news that I blew a charge pipe. They said the charge pipe is made of plastic and got brittle over time and blew off the throttle body. I found numerous remarks of others that had that problem when I googled it. Many of them stated they had it replaced with an aluminum charge pipe so I called BMW back and ask them what they were replacing it with plastic or aluminum. …
2012 BMW 135i engines & fuel economy
| Engine | Transmission | Drive | MPG city / hwy / combined |
|---|---|---|---|
| 3.0L 6-cyl turbo | 6-speed manual | RWD | 20 / 28 / 23 |
| 3.0L 6-cyl turbo | 7-speed automatic | RWD | 18 / 25 / 20 |
EPA ratings. Class: Subcompact car.
Frequently asked questions
Is the 2012 BMW 135i a good car?
Based on 19 owner complaints filed with NHTSA, the 2012 135i rates average: 13% fewer complaints than a typical year of the 135i at the same age. Complaint counts don't account for sales volume or individual maintenance, so have any used car inspected before buying.
What is the most common problem with the 2012 BMW 135i?
The engine & cooling — 10 complaints, 53% of all complaints for this model year. Next are the transmission & drivetrain (6) and fuel & propulsion system (5).
How many recalls does the 2012 BMW 135i have?
There are 6 recalls for the 2012 BMW 135i, the most recent from January 15, 2020 (inflator module). Recall repairs are free at any authorized dealer — check whether yours has been done with the VIN recall check.
What are the best and worst years of the BMW 135i?
The best years by complaints, compared at the same age, are 2013 and 2010. Years to avoid or approach with caution: 2008. See the full BMW 135i years comparison.
At what mileage do 2012 BMW 135i problems happen?
The median mileage reported in complaints is about 50,000 miles; 47% of problems with a recorded mileage started before 50,000 miles.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.