2021 Toyota Tacoma: engine and transmission complaints
ELEVATED COMPLAINT SIGNAL
38%
28 of 73 relevant owner complaints are about the engine, transmission or fuel system
38% of relevant owner complaints on the 2021 Toyota Tacoma are about the engine, transmission or fuel system. That is elevated. Worth an independent inspection before you commit to one.
Better than 56% of the 1,230 model years we track (2010–2023).
Excludes 7 airbag, lighting and seat-belt recall complaints that would otherwise mask the signal (unadjusted: 35%).
The percentage is each model year's drivetrain complaint share. No elevated signal describes the model year, not any one car; a well-kept example of a flagged model can still be the right buy, and any of these still needs an inspection.
What owners reported
POWER TRAIN09/08/2026
Driving in town 30 to 40mph, (while in drive) the vehicle rev’d up like it was in neutral then went back to normal. That is concerning because it will cause transmission problems & pulling onto a road the truck could shift to (neutral) causing it to not go.
ENGINE,FORWARD COLLISION AVOIDANCE08/08/2026
Having two issues major issues that’s causing me a $10,000 bill. The timing cover is leaking and there is a coolant bypass hose that is leaking. I have spend a lot of maintenance on this truck on maintaining it to have to remove the engine. As for the forward collision warning ive had it go off multiple times witout a …
ENGINE05/26/2026
The plastic coolant crossover valve or pipe failed at 66,000 miles and 5 years of usage. This led to the radiator cracking. After researching online, I read about thousands of Tacoma 3rd generation users with the same issue. Also, the same issue was recalled for several other models of Toyotas but not the Tacoma.
Three of 28 drivetrain complaints. The full report shows more, with quotes about the engine in the car you are looking at first.
Before you buy a 2021 Toyota Tacoma
Ask the seller whether the transmission has ever been repaired or replaced, and whether the car has shown shuddering, slipping, delayed or harsh shifts, or a whine at speed.
Drive it from a cold start and long enough to warm up. Many transmission faults hide once the car is warm.
Get an independent pre-purchase inspection from a mechanic you choose, and tell them to focus on the transmission.
Ask for service records. A transmission already replaced under warranty is a different car from one that was not.
Have the VIN?Paste it and get the full report for that car. First report free, then a 30-day pass covers a whole car search.
Experimental model-level information. This is not a vehicle inspection, vehicle-history
report, financial advice or purchase recommendation. It describes patterns across a model year, not the condition
of any individual vehicle.