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2021 Hyundai Santa Fe: engine and transmission complaints

HIGH COMPLAINT SIGNAL
48%
77 of 159 relevant owner complaints are about the engine, transmission or fuel system

48% of relevant owner complaints filed with NHTSA on the 2021 Hyundai Santa Fe are about the engine, transmission or fuel system. That is a model-level pattern, not bad luck.

Worse than 61% 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: 46%).

NHTSA data checked September 13, 2026
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Drivetrain complaints
77
engine, transmission, fuel
Total complaints
166
this model year
Fires reported
2
owner-reported
Recall campaigns
7
4 crashes · 2 injuries

Complaints by component

POWER TRAIN50 · 30%
UNKNOWN OR OTHER41 · 25%
ENGINE37 · 22%
ELECTRICAL SYSTEM29 · 17%
FORWARD COLLISION AVOIDANCE18 · 11%
FUEL/PROPULSION SYSTEM9 · 5%

The years either side

2010
66%
159 of 258
2011
51%
83 of 181
2012
74%
246 of 353
2013
57%
443 of 802
2014
66%
410 of 654
2015
71%
220 of 336
2016
75%
214 of 304
2017
78%
992 of 1,308
2018
69%
277 of 427
2019
48%
99 of 221
2020
49%
97 of 208
2021
48%
77 of 166
2022
58%
111 of 198
2023
43%
109 of 264

Manufacturers fix things mid-generation. A bad year next to a clean one is common; the fix usually arrived in between.

Cleaner alternatives

Other midsize SUVs with no elevated signal in 2021

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

ENGINE09/09/2026FIRE
The contact owned a 2021 Hyundai Santa Fe. The contact stated that while his wife was driving 50 MPH, the vehicle unexpectedly caught on fire. The contact's wife became aware that the radio was inoperable before the failure. Additionally, the contact’s wife’s eyes were irritated, and there was a hot, harsh odor which g…
FUEL/PROPULSION SYSTEM08/27/2026
The door to the gas tank is a push door which is temperamental. I can be at the pump and push the door to pop it open and it won't. I'm at the point where I have to pop my gas tank open before I even get to the gas station because to pull up to the pump and not be able to put gas in the tank is a waste of time. There i…
POWER TRAIN06/29/2026
The contact owns a 2021 Hyundai Santa Fe. The contact stated that while driving approximately 5-30 MPH, the transmission failed to shift properly, and the vehicle lost motive power. The engine warning light was illuminated. The contact stated that the failure was a recurring failure. The contact stated that the vehicle…

Three of 77 drivetrain complaints. The full report shows more, with quotes about the engine in the car you are looking at first.

Recall campaigns on this model year (7)

FUEL SYSTEM, GASOLINE:DELIVERY:HOSES, LINES/PIPING, AND FITTINGS
Hyundai Motor America (Hyundai) is recalling certain 2021-2022 Santa Fe and Sonata vehicles equipped with 2.5L turbocharged engines. Fuel may leak at the pipe connection…
VISIBILITY:WINDSHIELD
Hyundai Motor America (Hyundai) is recalling certain 2020-2021 Santa Fe, 2021 Sonata, and Elantra vehicles. During manufacturing, the windshield may not have been proper…
AIR BAGS: AIR BAG/RESTRAINT CONTROL MODULE
Hyundai Motor America (Hyundai) is recalling certain 2021 Santa Fe vehicles. The Occupant Detection System (ODS) module may not deactivate the air bag upon detection of …

This does not say whether a particular car has an open, unrepaired recall. That depends on the VIN.

Before you buy a 2021 Hyundai Santa Fe

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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.