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full bulletin at NHTSA ↗2006 Toyota Tacoma engine problems
severe 36 complaints filed with NHTSA · avg repair $3,100 · see engine across all vehicles →
Failure mileage
Complaints
36
Recalls
0
Avg fix
$3,100
3crashes
2fires
1injury
When does it fail?
Of the 36 engine complaints filed for the 2006 Toyota Tacoma, here's the actual mileage breakdown — failures cluster heaviest at 100,000-125,000 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 36 engine 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.
Among the 18 model years of Toyota Tacoma in our records for engine problems, this one ranks #2 by owner-complaint volume.
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.
These SKUs are Exhaust Manifolds with Catalytic Converters. The customer communication requested return of unsold inventory due to a loss of CARB certification. These SKUs can no longer be sold as they do not meet CARB standards, but parts on vehicles are not effected.
full bulletin at NHTSA ↗These SKUs are Exhaust Manifolds with Catalytic Converters. The customer communication requested return of unsold inventory due to a loss of CARB certification. These SKUs can no longer be sold as they do not meet CARB standards, but parts on vehicles are not effected.
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 ↗Dealer Package: 09/14/2018 The note in the ?Parts Ordering Process? section to reference POL17-16 to determine the applicable U-joint kit part # has been removed. T-SB-0302-17 has been updated with this information. Toyota has received a number of reports regarding Propeller Shaft Universal Joints on certain 2005 ? 2011 model year Tacoma vehicles. In these reports, customers have indicated that there is a drivetrain vibration and/or drivetrain noise. If the vehicle continues to be driven with the aforementioned condition, there is risk of severe damage to the propeller shaft. Although the Propeller Shaft Universal Joints are covered by Toyota?s Powertrain Limited Warranty for 5 years or 60,0
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2006 Tacoma has generated 36 owner complaints centering on engine and drivetrain behavior. The most serious are unintended acceleration events—gas pedal sticking or burying to the floor at highway speeds, engine racing uncontrollably, and dangerous forward lurches at stops. Multiple owners reported Toyota and dealers dismissed these as normal or blamed floor mats despite clear evidence the electronic throttle system was misbehaving. Two vehicles caught fire under the hood, one while parked and one on the highway.
Engine knock and ticking from new are pervasive; dealers confirmed other Tacomas on the lot made identical noise, then denied any fix was available. One owner suspects rocker-arm or valve-lash issues fixable in minutes, but feared voiding warranty. An oil filter detached during operation and came off again after reinstallation, pointing to possible internal pressure anomalies. Motor mounts have failed at the weld, dropping the engine and breaking the frame—Toyota reinforced this area on 2007+, signaling prior knowledge.
Transmission issues include stalling in first gear, refusing reverse, clunking that worsened over time, and over-revving between upshifts that dealers admitted damages the clutch. Throw bearings whistle repeatedly despite multiple repair attempts and even full clutch replacement. Cooling system problems range from timing-cover oil leaks ($2,763 quoted repairs) to cracked head gaskets leaking coolant into the engine. An idle surge problem causes unpredictable forward lurching while braked, and right-front ABS lockup has sent vehicles through intersections. One vehicle stalled without warning at highway speed, resulting in a crash and injuries.
Same Toyota Tacoma engine reports on nearby years: 2005 · 2007 · 2008 · 2009
Failure modes owners describe
Oil filter detachment
Oil filter came loose and detached from the engine during operation, spilling oil onto the road. One owner replaced filter and it came off again immediately after driving off in a U-turn, suggesting internal pressure issues within the filter or engine mounting.
When: At approximately 3,000 miles after oil change; once at 30 mph, then again shortly after reinstallation
Symptoms owners cite: Filter came off vehicle while driving; Oil spilled onto road; Check engine light illuminated after filter loss; Filter found crumpled on second failure
Repairs/costs cited: Owner reinstalled same filter with hand-tightening and wrench snugging; filter came off again. Later switched to Bosch filter with Castrol oil and vehicle drove fine.
Unintended acceleration / stuck throttle
Gas pedal stuck or vehicle surged to full throttle unexpectedly during highway driving or at stops. Multiple owners reported the accelerator staying pinned, going to floor, or engine racing without driver input. Toyota initially blamed floor mats or claimed behavior was normal; owners dispute this. Some with manual transmission noted they could manage with clutch; automatic owners faced brake-only control.
When: Varies: one at 36,500 miles on highway at 60 mph escalating to 107 mph; another at 8,000 miles during cruise control use; others intermittently during normal driving; some from new
Symptoms owners cite: Gas pedal buried to floor or stuck open; Engine revved to maximum uncontrollably; Sticking lasted 5–20 seconds before RPMs dropped; Occurred over 50 mph or during cruise control use; Brakes overheated and faded under prolonged pressure; Vehicle lurched forward at stops unpredictably; Occurred with or without AC on
Repairs/costs cited: No repairs documented; one owner traded vehicle at loss two weeks after incident. Toyota and dealers denied electronic throttle problem; claimed mat and pedal design was normal.
Recalls/TSBs owners mention: Toyota stated behavior was normal operation and no corrections made. One owner mentioned floor-mat recall, but owner disputes it addresses electronic throttle issue.
Engine idle surge and forward lurch at stop
Vehicle surged forward unpredictably while parked with brakes applied, or lurched forward in parking lots and at traffic lights. Engine RPM would drop to 500 then surge to 800 RPM at idle. Related to throttle or cruise control anomaly causing unintended forward motion despite braking.
When: From new (2,000 miles noted on one truck); occurs intermittently at stops regardless of AC status
Symptoms owners cite: Engine surged at idle (500 to 800 RPM jump); Vehicle lurched forward at traffic lights; Unpredictable forward surge while parked with brakes on; Clunking noise when shifting, became constant; Engine felt like it stalled when coasting, RPMs dropped then leveled off; Occurred with brakes firmly applied
Repairs/costs cited: No repairs documented. One owner caused minor traffic accident due to surge. Dealers did not confirm defect.
Recalls/TSBs owners mention: Toyota product engineer stated vehicle performed as designed; design stated to be incorrect by owner. Dealer unable to reprogram or adjust behavior.
Engine knock / ticking / tapping noise at startup
Loud ticking, tapping, or knocking noise from the engine at cold startup, lasting about one second, then disappearing when engine warmed up. Noise returns after engine cools. Dealers on multiple occasions compared with other new Tacomas on lot and confirmed same noise present on several vehicles, then claimed it was normal. One owner suspected rocker arm issue and valve lash adjustment, but avoided warranty-voiding work.
When: Present from day one with 0–600 miles; worst in cold weather or after cooling
Symptoms owners cite: Loud tapping or ticking sound at startup; Lasts approximately one second; Returns each time engine cools; Sounds like 'injector noise' per dealers (disputed); Knocking noise from engine block area
Repairs/costs cited: One owner indicated rocker arm or valve lash adjustment could fix in 10 minutes, but avoided warranty voiding. Dealers told owners noise was normal for Tacoma.
Recalls/TSBs owners mention: Toyota and dealers claimed noise was characteristic of vehicle and normal, no fixes available or planned.
Head gasket failure / coolant leak into engine
Head gasket cracked, allowing coolant to leak into engine. Owner smelled burning antifreeze from exhaust, observed coolant leaking, and vehicle shuddered and nearly stalled during acceleration. Independent mechanic diagnosed cracked head gasket needing replacement.
When: At 120,000 miles; one diagnosis at 120,000 miles
Symptoms owners cite: Burning antifreeze smell from exhaust; Antifreeze leaking from engine; Engine shudders and nearly stalls during acceleration; Vehicle felt as if it would stall with loud rattling noise; Engine and oil pressure warning lights illuminated
Repairs/costs cited: Quoted repair at independent mechanic; owner of other vehicle did not pursue repair. One owner called Toyota and was told to schedule diagnostic but vehicle not repaired.
Timing cover oil leak
Oil leak from timing cover identified as a common problem on 2006 Tacomas across multiple forums. Repair cost quoted by dealership technician at $2,763.
When: Timing not specified; identified by technician during service
Symptoms owners cite: Oil leak from timing cover
Repairs/costs cited: Repair quoted at $2,763.00 by dealership technician. Identified as common problem discussed on auto forums.
Motor mount failure / engine sagging
Driver-side motor mount collapsed or broke at the weld, allowing engine to shift approximately 3/4 inch toward the driver's side and tilt. This caused fan to rub shroud and produced loud grinding noise. Owner found weld broke and frame tore in front and behind weld area. Investigation revealed Toyota added reinforcement to 2007+ model frames, indicating prior knowledge of defect.
When: Varies; one noted at unspecified lower mileage
Symptoms owners cite: Loud grinding or rubbing noise from radiator fan hitting shroud; Engine tilted noticeably to driver's side; Frame damaged at motor mount weld location
Repairs/costs cited: No repairs documented. Owner found evidence of frame reinforcement added to 2007 model year.
Recalls/TSBs owners mention: No resolution from manufacturer despite widespread reports from other owners. Toyota added reinforcement to 2007+ model year, suggesting prior awareness.
Throw bearing / clutch noise (manual transmission)
Whistling noise from throw bearing repeatedly recurred despite multiple repair attempts at different dealers. Initially repaired at first dealer, recurred one month later. Second dealer repaired, recurred one week later. Dealer then refused full replacement and only greased bearing. Noise returned two days later. Toyota advised complete clutch replacement; after replacement at independent shop, noise returned two weeks later.
When: Began at 10,000 miles; current mileage 66,500 miles when complaint filed
Symptoms owners cite: Whistling noise from throw bearing; Clunking noise during shifting that became constant; Noise returned repeatedly despite repairs and greasing
Repairs/costs cited: First dealer: repaired throw bearing. Second dealer: refused replacement, only greased bearing. Independent mechanic: replaced entire clutch. All repairs temporary.
Recalls/TSBs owners mention: Toyota advised customer to replace clutch; bearing not replaced due to being 'new.'
A/C compressor liquid flood-back noise / potential belt seizure risk
Loud grinding noise lasting one second at startup, reportedly caused by liquid refrigerant (instead of vapor) being compressed by AC compressor. Owner expressed concern that if compressor seizes during operation, the serpentine belt could separate, causing loss of power steering and steering control, especially at highway speeds.
When: Present from new; one year of dealer visits before acknowledgment at approximately 14,000 miles
Symptoms owners cite: Loud grinding noise at startup lasting approximately one second; Sounds like top of engine coming off; Noise acknowledged at dealer; confirmed other Tacomas on lot made same noise
Repairs/costs cited: One AC compressor replaced; noise persisted.
Recalls/TSBs owners mention: Toyota insists noise is characteristic of vehicle with no fixes available or planned.
Transmission stalling and shifting problems
Vehicle stalled multiple times when accelerating in first gear and refused to go into reverse. Owner also reported clunking noise when shifting that worsened over time. Problems began shortly after carpeting was replaced due to water leak through firewall. Vehicle also jumped out of park into reverse on occasions.
When: Shortly after firewall water leak and carpet replacement; mileage not specified
Symptoms owners cite: Stalled 9 times when accelerating in first gear at 15 mph; Shifter would not go into reverse; Clunking noise when shifting, became constant; Vehicle jumped out of park into reverse; Fuel warning light not activated at proper fuel volume
Repairs/costs cited: Vehicle taken to two service dealers but problem not corrected. Owner was notified manufacturer but repair not documented.
Engine fire
Two separate reports of engine fire. In one case, owner smelled smoke and observed flames around front driver-side wheel while vehicle was parked; owner drove vehicle home to extinguish with fire extinguisher without contacting fire/police. In second case, vehicle caught fire while traveling on highway.
When: One at 137,816 miles while parked; one while traveling on Ohio Turnpike
Symptoms owners cite: Smoke smell near vehicle; Flames visible around front driver-side wheel; Engine caught on fire during highway travel
Repairs/costs cited: First vehicle: owner extinguished fire, vehicle not diagnosed or repaired. Second vehicle: no repair documented.
Recalls/TSBs owners mention: Manufacturer notified in first case; no action documented.
Engine over-revving between gear shifts
Engine RPMs failed to drop enough during upshifts, particularly between 3rd–4th and 4th–5th gear shifts, requiring driver to shift faster than normal. One owner reported engine racing to 3,000 RPM when shifting 4th to 5th. Toyota claimed this was an emissions procedure (rev-matching), but even Toyota mechanics disputed this was proper operation and said it would damage clutch.
When: Present from day one on new vehicle
Symptoms owners cite: Engine RPMs did not drop sufficiently between gear shifts; Engine raced when shifting 4th to 5th gear, reaching 3,000 RPM; Required faster shifting to prevent abusive downshifts; Created road safety concerns
Repairs/costs cited: No repairs made. Toyota claimed behavior was emissions procedure; dealers disputed this claim.
Recalls/TSBs owners mention: Toyota stated over-revving was an emission procedure and normal operation. Dealers confirmed this was incorrect operation that damages clutch.
ABS brake lockup and rough idle
Right front brake locked up during normal braking, causing tire skid through traffic light. Noise described as loud rumbling buzzing vibration from right front. Vehicle also exhibited rough idle from new that ran rough then sped up, which dealer claimed was normal for Tacoma.
When: Problem occurred when vehicle was 1–1.5 years old (1 to ~18 months old); rough idle since new
Symptoms owners cite: Right front brake locked up while other brakes did not apply; Vehicle skid through traffic light; Loud rumbling buzzing vibration from right front; Rough idle that speeds up to run normal
Repairs/costs cited: Dealer could not duplicate problem on 2/15/10 visit (picked up 2/18/10). Dealer claimed rough idle was normal for Tacoma with no fix available.
Recalls/TSBs owners mention: Dealer initially blamed problem on towing trailer; claimed no fix available for rough idle.
Cruise control malfunction / unintended downshift surge
While cruise control engaged at 60 mph, vehicle surged to 5,100 RPM, downshifted before adding fuel, and nearly caused crash into barrier. Product engineer stated vehicle performed as designed, and design was deemed incorrect by owner.
When: Since August 2006; failure at 8,000 miles
Symptoms owners cite: Cruise control malfunction with uncontrolled surge to 5,100 RPM; Vehicle downshifted before adding fuel; Nearly caused crash into barrier
Repairs/costs cited: No repairs made. Owner mailed detailed report to Toyota president.
Recalls/TSBs owners mention: Product engineer stated vehicle performed as designed; design stated by owner to be incorrect. Dealer stated door was designed to not auto-lock after gear engagement and unable to reprogram.
Neutral safety switch corrosion / stalling
Vehicle stalled and failed to restart after several attempts; failure recurred on multiple occasions. Dealer diagnosed rust from frame corroded neutral safety switch, making engine unable to start reliably.
When: At 73,000 miles
Symptoms owners cite: Vehicle stalled; Failed to restart after several attempts; Failure recurred on multiple occasions
Repairs/costs cited: Diagnosed as rust corroding neutral safety switch; vehicle not repaired.
Driveshaft clunking noise
Clunking noise coming from driveshaft area every time vehicle came to a stop or foot removed from brake pedal. Mechanic confirmed driveshaft problem but stated nothing could be done until owner called corporate to file complaint.
When: Started around 30,000 miles
Symptoms owners cite: Clunking noise when vehicle came to stop; Clunking when foot removed from brake pedal
Repairs/costs cited: Confirmed driveshaft problem by Toyota mechanic; no repair initiated without formal complaint.
Vehicle stall during operation
Engine stalled without warning while driving 60 mph, causing vehicle to crash into a hill. Police report filed with injuries requiring medical attention. Vehicle was destroyed.
When: Mileage unknown
Symptoms owners cite: Engine stalled without warning at 60 mph; Vehicle crashed into hill
Repairs/costs cited: Vehicle destroyed in crash.
Recalls/TSBs owners mention: Manufacturer not made aware of failure.
Exhaust manifold leak / exhaust noise
Vehicle makes excessive exhaust noise, sounds as if there is an exhaust manifold leak.
When: Not specified
Symptoms owners cite: Excessive exhaust noise; Sound consistent with exhaust manifold leak
Synthesized from 36 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 1 most recent
When first startup in morning, I hear a bad knocking noise it goes away after the engine warms up but as soon as it cools off, it is back again.. Happens mostly when it is cooler
Had engine trouble with your 2006 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 engine problem on the 2006 Toyota Tacoma?
It's a meaningful issue. 36 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?
Across the 22 complaints that reported odometer mileage, most engine failures cluster between 15,000 and 105,000 miles, with the median around 61,000. A quarter of owners report trouble before 15,000; a quarter make it past 105,000. 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 $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/2006/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.