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EnginePart report

2021 Toyota Tacoma Engine Problems

Complaints
12about this part
Share
15%of 81 total for the year
Median mileage
20miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 12 complaints about the engine of the 2021 Toyota Tacoma, 15% of the 81 complaints for this model year. Where a mileage was given, the median is 20 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“Engine developed a loud knock while under normal driving conditions at 61,000 miles. Oil was changed every 5k miles since new. Dealer says my oil rings on piston skirt have failed and heavy scoring on cylinder #5 Replaced short block under my aftermarket warranty. Toyota refused to cover it because I was 1k miles over factory warranty”

NHTSA complaint #11770043, filed 2026-10

“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 vehicle there. While in cruise control ive had it unexpectedly break on me when there was no visible vehicle infront or next to me.”

NHTSA complaint #11755683, filed 2026-08

“in traffic engine surges at times,going from 1200 to 3500 rpm's very dangerous, afraid to drive , wife refuses to drive it, naturally the dealer says NO PROBLEMS, that truck will last 300.000, at 3000 miles in seven months ,thinking about trading it in, dealers tell me I must repair the engine knocking noise, I didn't tell them about the revving up part, very unhappy ,have owned Toyota's never had problems !!”

NHTSA complaint #11449441, filed 2022-01

“Driving at approximately 55 mph and dash lights started flickering, radio went off, reset to 530 (am radio). Vehicle started sputtering and slowing down in traffic and completely shut down. Lost all power and coasted to side of road. I had no or little control of vehicle. I have connected services that was to warn me about mechanical and electrical failures and no warning of this happening. This enrollment was to give me services designed to help keep you safe, secure and in control of your Tacoma from almost anywhere . brand engagement center not concerned of the incident. …”

NHTSA complaint #11574484, filed 2024-02

“- Engine throttle went into wide open throttle causing the Unintended acceleration in traffic - The truck was doing about 45mph the passing gear came on and a second I was doing 60mph I quickly applied full pressure on the brakes and the car did not slow down at all, the truck failed to STOP or slow down and was getting closer to the vehicle in front, it was in the Expressway. My only thought was too press the ON OFF button and instantly shut down the passing gear and slowed down. _ The vehicle was dropped of at the dealer for 2-weeks and was inspected no problem found. …”

NHTSA complaint #11500891, filed 2023-01

Related service bulletins

Engine: other model years

YearComplaintsShare of year
2026323%
202533%
202464%
2023815%
2022712%
20211215%
20201416%
20192913%
20182612%
20173615%
20164715%
20151212%
201466%
201376%
201212241%
201132%
201062%
200982%
200882%
200781%
2006182%
2005183%
2004113%
200351%
200231%
200121%
200010%
199910%
199810%
199711%
199511%

Other parts of the 2021 Toyota Tacoma

Transmission and drivetrain
14 complaints
Brakes
12 complaints
Other or unknown
12 complaints
Electrical system
9 complaints
Forward collision avoidance
9 complaints
Fuel system
9 complaints
Air bags
7 complaints
Body and structure
6 complaints
Vehicle speed control
5 complaints
Lane departure
4 complaints
Seats
3 complaints
Steering
3 complaints

← All problems reported for the 2021 Toyota Tacoma

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 29, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology