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2021 BMW 3 Series problems: engine and transmission complaints and recalls
41% of relevant owner complaints filed with NHTSA on the 2021 BMW 3 Series are about the engine, transmission or fuel system. That is a model-level pattern, not bad luck.
Better than 51% of the 1,790 model years we track (2010–2023).
Excludes 4 airbag, lighting and seat-belt recall complaints that would otherwise mask the signal (unadjusted: 36%).
Does the 2021 BMW 3 Series have engine problems?
Owner complaints say yes, as a model-year pattern. 12 of 29 relevant complaints filed with NHTSA about the 2021 BMW 3 Series concern the engine, transmission or fuel system (41%), and the largest group is filed under engine (11). For comparison, the 2020 scores 45%. On a test drive, check for stalling, loss of power, rough idle, oil consumption or a check-engine light. This describes the model year, not any one car: a well-maintained or already-repaired example can be fine, and a clean model year can still have a bad car in it.
Complaints by component
The years either side
Manufacturers fix things mid-generation. A bad year next to a clean one is common; the fix usually arrived in between.
How the 2021 compares with other BMW 3 Series years
Of the 7 BMW 3 Series years with enough complaints to score, the 2021 is the 2nd-best on engine and transmission share (41%). The worst is the 2010 (68%), the best the 2019 (41%). By volume, the 2021 drew 33 complaints (12 drivetrain), against 53 for the 2020 and 8 for the 2022.
BMW 3 Series years to avoid and best years →
2010 3 Series problems · 2016 3 Series problems · 2017 3 Series problems · 2018 3 Series problems · 2019 3 Series problems · 2020 3 Series problems · 2021
The rest of the picture on the 2021 BMW 3 Series
- What the repair costs. Typical engine repair ranges, to price into your offer.
- Cleaner alternatives. Similar cars and nearby years with a better record.
- Up to 15 owner reports, with the ones about your car's own engine first.
- What to ask the seller and what to check on the test drive, for this car.
- Two cars side by side, if you are deciding between them.
What one owner reported
One of 12 drivetrain complaints. The full report shows up to 15, with quotes about the engine in the car you are looking at first.
Checking one particular 2021 BMW 3 Series? This page is about the model year. Accidents, title brands and odometer records belong to the individual car, and that is what a vehicle history report covers.
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Does the 2021 BMW 3 Series have engine problems?
Owner complaints say yes, as a model-year pattern. 12 of 29 relevant complaints filed with NHTSA about the 2021 BMW 3 Series concern the engine, transmission or fuel system (41%). Before buying one, have an independent mechanic check the engine and ask the seller whether it has been repaired or replaced.
What is the most common problem with the 2021 BMW 3 Series?
Going by NHTSA owner complaints, the most common problem filed against the 2021 BMW 3 Series is electrical system: 15 of 33 complaints (45%) name it, followed by engine (11) and air bags (4). A complaint can name more than one component, so these overlap. Engine, transmission and fuel-system complaints together make up 41% of the relevant total.
Is the 2021 BMW 3 Series reliable?
On the engine and transmission, owner complaints point to a weak spot: 41% of relevant complaints filed with NHTSA concern the drivetrain (high signal). That is better than 51% of the 1,790 model years we track. Among the 7 BMW 3 Series years we score, it ranks 2nd-best. Complaint data describes the model year, not one car, and it says nothing about trim, paint or electronics outside the drivetrain; an independent inspection still decides it.
Are there engine or transmission recalls on the 2021 BMW 3 Series?
NHTSA lists no recall campaigns on the 2021 BMW 3 Series.
Which BMW 3 Series years are better?
The 2021 has the lowest engine and transmission complaint share of the BMW 3 Series years we track (41%). The other years run higher. Every year side by side: https://thelanecheck.com/cars/bmw-3-series
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Check a VINExperimental 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.