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2021 Buick Encore: engine and transmission complaints

VERY HIGH COMPLAINT SIGNAL
62%
36 of 58 relevant owner complaints are about the engine, transmission or fuel system

62% of relevant owner complaints filed with NHTSA on the 2021 Buick Encore are about the engine, transmission or fuel system. Well over half of everything owners reported is the drivetrain. That is a severe model-level pattern; every model year we track at this level has a documented failure behind it.

Worse 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: 59%).

NHTSA data checked September 13, 2026
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Drivetrain complaints
36
engine, transmission, fuel
Total complaints
61
this model year
Fires reported
0
owner-reported
Recall campaigns
2
2 crashes · 5 injuries

Complaints by component

ENGINE18 · 30%
POWER TRAIN14 · 23%
SERVICE BRAKES10 · 16%
UNKNOWN OR OTHER7 · 11%
FUEL/PROPULSION SYSTEM7 · 11%
ELECTRICAL SYSTEM5 · 8%

The years either side

2010
no data
2011
no data
2012
no data
2013
62%
28 of 52
2014
60%
32 of 60
2015
41%
42 of 124
2016
74%
51 of 79
2017
64%
46 of 89
2018
68%
42 of 74
2019
64%
47 of 84
2020
48%
39 of 87
2021
62%
36 of 61
2022
66%
25 of 40
2023
48%
10 of 25

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

Cleaner alternatives

Other subcompact 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

POWER TRAIN,SERVICE BRAKES05/27/2026
Intermittent Service Brake Assist Light with very hard brake pedal and almost no breaks backing up. Have had it to several shops who said it was a turbo booster issue so scheduled service with Patriot GMC Boyertown Pa. Also intermittently has little to no power causing driving hazard suddenly especially uphill. Seem…
ENGINE11/11/2025
I have continuously had my check engine light pop on. I have took it in twice for them fix the issue which is the purge sensor. It did not fix the issue because the light just pops back on. This has caused issues with me passing emissions and has been an headache shortly street I obtained the vehicle.
ENGINE07/23/2025
Took to the dealership. They stated my flex pipe had melted and the o2 sensors are stuck in the pipe need replacement as well. They have to replace flex pipe and everything leading to the 2nd o2 sensor. They stated there was no damage or tampering to the flex pipe. This should not have happened in this new of a vehicle…

Three of 36 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)

SERVICE BRAKES
General Motors LLC (GM) is recalling certain 2020 Chevrolet Corvette and Cadillac CT4, CT5 and XT4, 2021 Chevrolet Trailblazer, and 2020-2021 Buick Encore GX vehicles. S…
EQUIPMENT:MECHANICAL:ACCESSORY SCISSOR/SCREW/BOTTLE JACK/LIFT:STAND
General Motors, LLC. (GM) is recalling certain 2020-2022 Buick Encore GX and 2021-2022 Chevrolet Trailblazer vehicles. The emergency jack, if not positioned as directed …

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

Before you buy a 2021 Buick Encore

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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. Combined across 2 body styles NHTSA files separately.