TSB: Some 2005 ? 2023 model year Tacoma vehicles equipped with a manual transmission may exhibit a squeak or creak noise from the clutch pedal when it is depressed or released.
full bulletin at NHTSA ↗2012 Toyota Tacoma powertrain problems
moderate Owners of the 2012 Toyota Tacoma have filed 32 NHTSA complaints about the powertrain, typically surfacing around 61,000 miles at roughly $2,500 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See powertrain across all vehicles →
Failure mileage
Complaints
32
Recalls
0
Avg fix
$2,500
| Model year | powertrain complaints |
|---|---|
| 2008 Tacoma | 19 |
| 2009 Tacoma | 68 |
| 2011 Tacoma | 8 |
| 2012 Tacoma (this page) | 32 |
| 2013 Tacoma | 19 |
| 2014 Tacoma | 9 |
| 2015 Tacoma | 9 |
| 2016 Tacoma | 131 |
When does it fail?
Of the 32 powertrain complaints filed for the 2012 Toyota Tacoma, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 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
Owners have filed 32 powertrain complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering powertrain 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.
TSB: SUPERSESSION NOTICE The information contained in this bulletin supersedes Service Bulletin No. T-SB-0186-12. * Applicability has been updated to include 2018 and 2019 model year Tacoma vehicles. * The entire bulletin has been updated. Service Bulletin No. T-SB-0186-12 is obsolete and any printed versions should be discarded. Some 2005 - 2019 model year Tacoma vehicles equipped with a manual transmission may exhibit a squeak or creak noise from the clutch pedal when it is depressed or released. Follow the Repair Procedure in this bulletin to address this condition.
full bulletin at NHTSA ↗TSB: REVISION NOTICE July 01, 2019 Rev2: ? Applicability has been updated to 2019 ? 2020 model year Toyota vehicles. ? The Techstream Preparation and Process Overview sections have been updated. October 30, 2017 Rev1: ? Applicability has been updated to include 2018 model year vehicles. Any previous printed versions of this bulletin should be discarded. SUPERSESSION NOTICE The information contained in this bulletin supersedes SB No. T-SB-0012-13. Service Bulletin No. T-SB-0012-13 is obsolete and any printed versions should be discarded. Be sure to review the entire content of this bulletin before proceeding. Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated
full bulletin at NHTSA ↗TSB: REVISION NOTICE June 8, 2018 Rev2: ? Applicability has been updated to exclude 2016 ? 2017 model year Tacoma vehicles. ? The Repair Procedure section has been updated. May 15, 2017 Rev1: ? Applicability has been updated to include 2016 ? 2017 model year Tacoma and 4Runner vehicles. ? The Introduction section has been updated. Any previous printed versions of this bulletin should be discarded. Some 2004 ? 2017 model year 4Runner vehicles, 2007 ? 2014 model year FJ Cruiser vehicles, and 2005 ? 2015 model year Tacoma vehicles equipped with part-time 4WD may exhibit a cyclical groaning or grinding noise coming from the front differential in 2WD that goes away when operated in 4WD. This nois
full bulletin at NHTSA ↗TSB: REVISION NOTICE February 21, 2018 Rev2: ? Applicability has been updated to include 2015 ? 2017 model year Tacoma vehicles. ? The Parts Information and Repair Procedure sections have been updated. September 10, 2014 Rev1: ? Applicability has been updated to include 2013 ? 2014 model year Tacoma vehicles. ? The Warranty Information, Parts Information, and the Repair Procedure sections have been updated. Any previous printed versions of this bulletin should be discarded. SUPERSESSION NOTICE The information contained in this bulletin supersedes SB No. TC004-06. ? Applicability has been updated to include 2007 ? 2012 model year Tacoma vehicles. ? The Repair Procedure section has been update
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2012 Tacoma powertrain complaints fall into distinct failure patterns. The most frequent and severe issue is secondary air injection system valve failure (codes P2440/P2442), where the switching valve sticks open at mileage ranging from 37,000 to 75,000 miles. This forces the truck into limp mode, cutting power to 30–40 mph max, creating dangerous conditions when merging onto highways or in heavy traffic. Owners report Toyota repair costs of $940 to $3,200 for the assembly replacement, and Toyota initially refused warranty coverage despite the part being integral to emissions control. Toyota did later extend warranty on some 2012 Tacomas after issuing a similar recall on Tundras, but coverage remains inconsistent.
Drivetrain vibration is another persistent complaint, present from near-new mileage and worsening over time. Owners describe shaking during acceleration in lower gears (1st–2nd), particularly uphill and on cold starts. Dealers traced it to incorrectly installed and unlubricated driveshaft center support bearings. Factory TSBs directed replacing engine mounts, rear springs, and steering dampers—none resolved the issue. When driveshaft removal eliminated the vibration but reinstallation brought it back, Toyota declared it "normal" and unable to be fixed.
Transmission problems include harsh, erratic shifts; grinding noises; reluctance to engage 1st gear; and popping out of gear during driving. Some owners report the truck surges forward when stopped at lights, behavior they say worsens when cold. Dealers cannot replicate these issues during service visits, and Toyota claims all their vehicles behave this way.
Cold-start throttle lag, loss of acceleration during highway merges, transmission line rust at relatively low mileage, and drivetrain noises round out the reported issues.
Same Toyota Tacoma powertrain reports on nearby years: 2009 · 2013
Failure modes owners describe
Secondary Air Injection System Valve Failure (P2440/P2442)
Switching valve stuck open in the secondary air injection system, causing the engine to enter limp mode. Hot exhaust gases backflow into the solenoid, potentially melting gaskets and blocking the sealing plate. The plastic air pump downstream can be damaged by heat. Vehicle is severely underpowered and limited to 30–40 mph, creating a serious safety hazard.
When: Typically between 37,000 and 75,000 miles; failures reported as early as 45,000 miles and as late as 75,000 miles.
Symptoms owners cite: Check Engine Light and Trac Off Light illuminated; Abrupt entry into limp mode; Vehicle speed limited to 30–40 mph max; Loss of acceleration power; Unable to merge onto highway safely
Codes mentioned: P2440, P2442, P2441, P2445
Repairs/costs cited: Toyota part number 25710-31020 (superseded by 25710-31022). Owners report repair costs ranging from $940 to $3,200 for replacement of the secondary air injection assembly. Toyota initially refused to cover under powertrain or emissions warranty on many vehicles; some owners received partial coverage (parts only, owner paid labor) after manufacturer escalation.
Recalls/TSBs owners mention: Toyota issued a TSB (Technical Service Bulletin) for similar failures on older Tundras and later released a special warranty extension for some 2012 Tacoma owners. However, many owners report Toyota refused warranty coverage, claiming the part falls outside emissions warranty, despite it being directly tied to the emissions control system. Toyota redesigned the system as early as 2013 model year.
Drivetrain Vibration During Acceleration
Persistent vibration felt throughout the drivetrain, particularly when accelerating from a stop or between 5–20 mph in lower gears (1st through 2nd). Occurs more often during cold-start conditions and uphill acceleration. Dealers traced the issue to incorrect driveshaft center support bearing installation (misaligned, improperly lubricated) and driveshaft imbalance. Vibration worsens over time and does not resolve with attempted fixes.
When: Present from new or very early in ownership; reported at mileage as early as 3 miles and continuing through 125,000 miles.
Symptoms owners cite: Truck shakes and shudders on acceleration in 1st and 2nd gear; Vibration most noticeable at 5–20 mph or 45–55 mph depending on vehicle; Vibration worsens with cold starts; Vibration increases in severity over time as mileage accumulates; Vibration disappears when driveshaft is removed
Repairs/costs cited: Dealer found driveshaft center support bearing installed incorrectly and without grease. Factory TSB directed replacement of engine mounts, rear spring assemblies, and steering wheel damper, but these measures did not resolve the issue. Driveshaft replacement attempted, but problem returned when driveshaft was reinstalled. Ultimately Toyota declared the vibration 'normal' and unable to be fixed.
Recalls/TSBs owners mention: Toyota acknowledged the problem and provided a three-tier fix procedure involving engine mounts, rear springs, and steering damper replacement per TSB. However, when these fixes failed, Toyota told dealers the vibration was 'normal' and under review but could not be corrected. Toyota later stated 'all Toyotas do it' and nothing could be done. Warranty enhancement program was offered through 2011 model year but did not extend to 2012 models with the same issue.
Harsh Transmission Shifts and Grinding
Transmission shifts erratically and with excessive harshness, particularly when cold. Gears grind and are reluctant to engage, especially 1st gear. Transmission occasionally pops out of gear during normal driving. When stopped, the vehicle may surge forward unexpectedly when brakes are released, as if hit from behind. Problem worsens over time and is more pronounced on cold start.
When: Present from new or very early in ownership; reported at 90 miles, 500 miles, and 4,900+ miles; surging behavior present from initial purchase.
Symptoms owners cite: Hard, erratic transmission shifts; Grinding sounds from transmission; Transmission reluctant to engage 1st gear; Transmission pops out of gear during driving; Vehicle surges forward when stopped at traffic light or after braking; Behavior worse in cold conditions
Repairs/costs cited: Owners report dealers could not replicate issues during diagnostic visits. One owner reports Toyota instructed a dealer not to document or inspect the vehicle on a return visit. No repair notes provided; Toyota declined to address under warranty, claiming the behavior is normal.
Recalls/TSBs owners mention: Toyota told dealers and owners the shifting and surging behavior is 'normal' for Toyota vehicles and all models exhibit it, including brand-new ones. Toyota advised dealers not to write repair orders for these complaints. Dealers claim warranty will not cover the issue.
Cold-Start Throttle Unresponsiveness
Engine fails to respond to accelerator input during cold start or within the first 20–30 minutes of operation. Engine RPMs do not increase, and the vehicle sits immobile despite pressing the accelerator. Problem persists even after cleaning the Mass Air Flow sensor. Vehicle eventually responds after pushing accelerator to the floor, but the lag creates a dangerous condition in traffic intersections.
When: Occurs during first 20–30 minutes of operation after cold start; driver maintained vehicle meticulously with regular tune-ups and oil changes.
Symptoms owners cite: No engine response to accelerator input; RPMs do not increase when accelerator pressed; Engine produces no sound when accelerator engaged; Vehicle immobile in traffic intersection or on roadway; Eventually responds after accelerator pushed hard; Drive-by-wire throttle system involved
Repairs/costs cited: No repair completed; owner cleaned MAF sensor with no improvement. Owner suspects drive-by-wire throttle system malfunction but no dealer diagnosis provided.
Loss of Acceleration (Check Engine Light, No Diagnostic Replication)
Vehicle suddenly loses acceleration capability with no warning lights initially, or with Check Engine Light illuminated. Acceleration failure occurs without warning while merging onto highways or exiting parking lots. Dealers cannot replicate the issue on first visit but failure recurs later. One case involved clutch replacement; others remain undiagnosed.
When: Reported at 33,000 miles, 45,000 miles; failures occur during normal commuting and highway merging.
Symptoms owners cite: Complete loss of acceleration; Vehicle unresponsive to accelerator pedal; No warning indicators (or Check Engine Light in some cases); Failure occurs during critical driving situations (highway merge, parking lot exit); Failure does not replicate on initial dealer visit
Repairs/costs cited: One case diagnosed as clutch failure at 33,000 miles; manufacturer offered parts coverage and owner paid labor. Other cases lack specific repair information.
Recalls/TSBs owners mention: Manufacturer covered parts for clutch replacement at 33,000 miles while owner paid labor.
Driveshaft Imbalance and Vibration at Highway Speeds
Vehicle develops vibration during highway driving around 45–55 mph, worsening with mileage. By 125,000 miles, vibration became severe between 60–70 mph. Dealer diagnosed driveshaft as out of balance and replaced it, but the problem should not develop at relatively low mileage. Owner concerned that driveshaft failure could cause severe vehicle damage and injury.
When: Vibration first noticed at approximately 115,000 miles; progressively worsened to severe by 125,000 miles.
Symptoms owners cite: Vibration during highway driving at 45–55 mph initially; Vibration speed range expands to 60–70 mph as mileage increases; Vibration worsens progressively over 10,000 miles
Repairs/costs cited: Driveshaft replaced due to imbalance; owner questions why imbalance should develop at this mileage.
Transmission Line Rust and Fluid Leak
Transmission cooler lines fractured due to corrosion/rust on the undercarriage. Fluid leak discovered on driveway. Vehicle significantly rusted overall at 71,000 miles, with rear bumper and brackets also rusted. Dealer claimed no recall or warranty coverage for rust-induced transmission line failure.
When: Discovered at approximately 71,000 miles.
Symptoms owners cite: Trail of transmission fluid leak on driveway; Significant undercarriage rust; Rear bumper and bracket rust; Transmission cooler line fractures
Repairs/costs cited: Vehicle taken to independent mechanic who confirmed significant rust damage; vehicle not repaired. Dealer denied warranty coverage.
Recalls/TSBs owners mention: Dealer informed contact there was no recall or warranty coverage for rust-related transmission line failure. Manufacturer was contacted and a case was filed, but no resolution provided.
Differential Concern at High Speed
Owner reports rear differential is defective at 27,000 miles and fears it will lock up at highway speeds (55+ mph), causing an accident. Specific nature of defect not detailed in complaint.
When: Identified at 27,000 miles.
Symptoms owners cite: Rear differential defective (specific symptoms not detailed)
Recalls/TSBs owners mention: Toyota refused to repair.
Drivetrain Noise (Whine and Chirping)
Loud whining noise from under vehicle at speeds 30 mph and higher. One complaint also mentions cricket-like chirping noise, likely from propeller shaft.
When: At speeds of 30 mph and above.
Symptoms owners cite: Loud whining noise from under vehicle; Cricket-like chirping noise from propeller shaft; Noises begin at 30 mph and persist at higher speeds
Synthesized from 32 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 3 most recent
My truck started having a vibration when driving around 45-55 mph. This problem first became noticeable when it had about 115,000 miles on it. Over time the speed that the vibration became noticeable at gradually increased. By 125,000 miles on the truck, it was vibrating hard between 60 and 70 mph. The dealership determined that the problem was that the drive shaft was out of balance and that…
2012 tacoma with 37,00 miles: while leaving a parking lot and trying to accelerate on to a busy highway, (60mph speeds), truck would not accelerate and "check engine" and "trac off" lights illuminated. Vehicle went into "limp mode" and would not go faster than 35 MPH. I had to quickly pull off the road as to not cause an accident. If this had this occurred while traveling at normal highway speed…
My 2012 tacoma is not shifting properly. It is shifting very hard and a bit erratic when driving, and when I am completely stopped at a light, the truck will sometimes violently surge forward making it feel like another vehicle has hit me from behind. It does not happen all the time, but it seems to happen more when it is cold. I took it to the dealership only to be told they could not replicate…
Had powertrain trouble with your 2012 Toyota Tacoma?
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 powertrain problem on the 2012 Toyota Tacoma?
It's a documented issue but not catastrophic. 32 complaints have been filed. Repairs average $2,500 and most owners catch it before it causes a breakdown.
At what mileage does the powertrain typically fail?
Across the 26 complaints that reported odometer mileage, most powertrain failures cluster between 37,000 and 75,000 miles, with the median around 61,000. A quarter of owners report trouble before 37,000; a quarter make it past 75,000. 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 $2,500 for powertrain 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 powertrain?
No active recalls currently cover powertrain 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/2012/Toyota/Tacoma.
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.