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2021 Buick Enclave: engine and transmission complaints

NO ELEVATED SIGNAL
23%
5 of 22 relevant owner complaints are about the engine, transmission or fuel system

No elevated drivetrain complaint concentration in the available NHTSA records for the 2021 Buick Enclave. Engine, transmission and fuel system account for 23% of relevant complaints.

Better than 82% of the 1,230 model years we track (2010–2023).

Excludes 3 airbag, lighting and seat-belt recall complaints that would otherwise mask the signal (unadjusted: 20%).

NHTSA data checked September 13, 2026
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Drivetrain complaints
5
engine, transmission, fuel
Total complaints
25
this model year
Fires reported
0
owner-reported
Recall campaigns
2
0 crashes · 0 injuries

Complaints by component

ELECTRICAL SYSTEM6 · 24%
SERVICE BRAKES6 · 24%
UNKNOWN OR OTHER4 · 16%
SEAT BELTS3 · 12%
STRUCTURE3 · 12%
POWER TRAIN2 · 8%

The years either side

2010
38%
101 of 275
2011
45%
77 of 212
2012
33%
36 of 132
2013
50%
26 of 69
2014
48%
40 of 292
2015
28%
17 of 171
2016
53%
16 of 141
2017
31%
10 of 179
2018
50%
30 of 64
2019
68%
26 of 42
2020
47%
25 of 56
2021
23%
5 of 25
2022
too few complaints
2023
too few complaints

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

What owners reported

POWER TRAIN06/17/2026
The muffler and tail pipe has fallen off 6 times and ive had to get repaired. I believe it is due to the bad torque converter that others have complained about and goggle says that is a likely failure on the buick.
FUEL/PROPULSION SYSTEM10/24/2024
Catalytic converter was defective in October 2022. Had to wait to get part in. Vehicle taken to dealer for repair in December 2022/ Told that the second catalytic converter needed to be repaired. I stated that I was not aware that cars had two catalytic converters. Parts were ordered and replaced. Engine light came b…
POWER TRAIN09/11/2022
AWD has vibration at highway speeds when engaged

Three of 5 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 (2)

AIR BAGS:SENSOR:FRONTAL IMPACT
General Motors, LLC (GM) is recalling certain 2021 Chevrolet Traverse and Buick Enclave vehicles. During service by dealers, certain vehicles may have received incorrect…
AIR BAGS:SIDE/WINDOW:CURTAIN
General Motors, LLC (GM) is recalling certain 2020-2022 Chevrolet Traverse and 2021-2022 Buick Enclave vehicles. The harness connector to the left or right side roof rai…

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

Before you buy a 2021 Buick Enclave

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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.