The 2020 Tacoma is generally solid, but the 3.5L V6 has documented oil consumption and fuel system issues that can turn expensive. The transmission, while mostly reliable, has a few weak points in its cooling and mounting systems.
3.5L V6 Excessive Oil Consumption / Piston Ring Failure
Occasional · high severity
Typical onset: 40,000-80,000 mi
Symptoms: Burning through a quart or more of oil every 1,000-1,500 miles, Blue smoke on cold start or acceleration, P0301-P0306 misfire codes if severe, Carbon buildup on intake valves exacerbating the problem
Fix: Piston ring replacement requires full engine teardown — 18-24 hours labor. Some cases need complete short block if cylinder walls are scored. Toyota issued a TSB but no recall, so it's often out-of-pocket unless you fight warranty hard.
Estimated cost: $4,500-8,000
Fuel Pump Failure (NHTSA Recall)
Common · high severity
Symptoms: No-start condition or stalling while driving, Engine cranks but won't fire, Sudden loss of power on highway, Check engine light with fuel pressure codes
Fix: Covered under recall 20TA02 — Toyota replaces low-pressure fuel pump. If out of recall window or pump grenades before notice, it's 2-3 hours labor to drop tank and swap pump assembly.
Estimated cost: $600-1,200
Transmission Oil Cooler Line Leaks
Occasional · medium severity
Typical onset: 60,000-100,000 mi
Symptoms: Red ATF puddles under front of truck, Transmission running hotter than normal, Burnt ATF smell, Low fluid level on dipstick
Fix: Cooler lines corrode or develop leaks at crimp fittings. Replace lines and flush system if fluid is contaminated — 2-3 hours labor. Catch it early before transmission cooks itself.
Estimated cost: $400-800
Transmission Mount Failure
Common · low severity
Typical onset: 50,000-90,000 mi
Symptoms: Clunk or thud on hard acceleration or deceleration, Vibration felt through shifter or floorboard, Visible movement of transmission tailhousing when rocking truck in gear
Fix: Rubber mount deteriorates faster than expected, especially with off-road use or heavy loads. Replace mount — 1.5-2 hours labor. Use OEM or quality aftermarket; cheap mounts fail in 20k miles.
Estimated cost: $250-450
Head Gasket Seepage (3.5L V6)
Rare · medium severity
Typical onset: 70,000-120,000 mi
Symptoms: Coolant weeping from head/block mating surface, Slight coolant loss with no visible external leak, No overheating or milky oil — just seepage, White residue on block below heads
Fix: Not blown gaskets, just weeping. If caught early and no overheating history, it can wait. Full repair is heads off, resurface if needed — 12-16 hours labor. Often done when doing timing chain or other major work.
Symptoms: Hesitation under load or at highway speeds, Rough idle or stumbling on acceleration, Hard starting when fuel tank is below 1/4, P0171/P0174 lean codes in some cases
Fix: In-tank filter rarely serviced by owners, and Toyota doesn't have great service intervals for it. Replace fuel filter during pump service or proactively if running in dusty/rural conditions — 1.5 hours labor bundled with tank drop.
Estimated cost: $300-600
Owner tips
Check oil level every 1,000 miles on the 3.5L V6 — early detection of oil consumption saves engines
Service transmission fluid every 30-40k miles if towing or off-roading; Toyota's 'lifetime' fluid claim doesn't hold up under real use
Inspect transmission mount annually if you haul or go off-road — cheap insurance against drivetrain damage
Use Top Tier fuel to minimize carbon buildup on intake valves; consider walnut blasting every 60k miles
Solid truck with a couple of expensive gotchas on the V6 — buy with a pre-purchase inspection focused on oil consumption testing, and budget for transmission fluid services Toyota won't tell you about.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
Fitment notes: Standard top post configuration; battery located under hood on driver side
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Every control module on the 2016-2026 Toyota Tacoma — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
📍 Integrated with PCS radar or separate module behind dashboard
🔧 Toyota Techstream
⚠️ Part of Toyota Safety Sense (TSS). May be integrated with radar module. Calibration required.
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
Consequence: If the fuel pump fails, the engine can stall while driving, increasing the risk of a crash.
Remedy: Toyota will notify owners, and dealers will replace the fuel pump assembly with an improved one, free of charge. Owners of specific models were notified that remedy parts were available starting January 21, 2021. Owners of other models will be notified as remedy parts become available. Remedy parts should be available for all affected vehicles by late March 2021. Owners may contact Toyota customer service at 1-888-270-9371 or Lexus customer service at 1-800-255-3987. Note: This recall is an expansion of recall 20V-012. Toyota's number for this recall is 20TA02. Lexus' number for this recall is 20LA01.
Performance
Horsepower
278hp
Torque
265lb-ft
0–60 mph
7.1sec
Quarter mile
15.5sec
Top speed
115mph
Fuel economy (EPA)
City
18mpg
Highway
22mpg
Combined
20mpg
Fuel
Regular Gasoline
Capability & size
Towing capacity
6,800lb
Payload
1,440lb
Curb weight
4,425lb
Seating
4seats
EPA class
Small Pickup Trucks 4WD
Wiper blades
3rd generation. Pickup trucks do not have rear wipers.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2020 Toyota Tacoma 3.5L V6 and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years.