2021 BMW 330I: Recalls, Problems & MPG
Here are the deets on the 2021 BMW 330I: 7 recalls, 29 owner complaints and up to 30 mpg combined.
Recalls
7 vehicle recalls from the manufacturer. Repairs are free. Check your VIN to see if one is still open on your car.
Backup camera, Backup camera Vehicle recall #21V096000 · 2021 · 13,858 vehicles
What's wrong: When shifting into reverse, a small portion of the rearview image May be obscured, or the screen May not illuminate. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (fmvss) number 111, "rear visibility."
Why it matters: If the driver relies on only the rearview camera image, the missing or reduced rearview image view can increase the risk of a crash or injury.
The fix: Bmw will notify owners, and dealers will inspect the rearview camera software and update it if necessary, free of charge. The recall began April 16, 2021.
Seat belts Vehicle recall #21V298000 · 2021 · 12 vehicles
What's wrong: The bolt securing the seat belt assembly to the frame was not tightened to specification.
Why it matters: An improperly installed seat belt assembly May not restrain an occupant as expected, increasing the risk of injury.
The fix: Bmw will notify owners, and dealers will inspect the front seat belt buckle assembly connection and, if necessary, replace it, free of charge. Owner notification letters were mailed on June 25, 2021.
Seat belts Vehicle recall #21V554000 · 2021 · 21,537 vehicles
What's wrong: The passenger seat belt automatic locking retractor (alr) May deactivate early, before the webbing fully retracts. As such, these assemblies fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "occupant crash protection."
Why it matters: During a crash, a seat belt retractor that does not function as intended increases the risk of injury.
The fix: Dealers will inspect the seat belt retractors (including the seat belts) and, if necessary, replace the retractors, free of charge. Owner notification letters were mailed on September 3, 2021.
Seats Vehicle recall #23V211000 · 2023 · 51 vehicles
What's wrong: The seat frame May not have been welded properly to the seat rails.
Why it matters: An improperly welded seat frame May not properly restrain the occupant during a crash, increasing the risk of injury.
The fix: Dealers will replace the seat frame and back rest, free of charge. Owner notification letters were mailed May 22, 2023.
Electrical, Seat belts Vehicle recall #23V584000 · 2023 · 144 vehicles
What's wrong: The receiver audio module control unit software May fail to properly generate audible seat belt warnings to the driver to fasten their seat belt. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 208, "occupant crash protection."
Why it matters: An audible chime that does not properly alert the driver to fasten their seat belt increases the risk of injury in a crash.
The fix: Dealers will update the receiver audio module software, free of charge. Owner notification letters were mailed October 12, 2023.
Electrical Vehicle recall #25V636000 · 2025 · 199,674 vehicles
What's wrong: The engine starter relay May corrode, causing the relay to overheat and short circuit.
Why it matters: A short circuit in the starter relay May increase the risk of a fire.
The fix: Owners are advised to park their vehicles outside and away from structures until the remedy is complete. Dealers will replace the engine starter, free of charge. Owner notification letters were mailed February 6, 2026.
Electrical Vehicle recall #26V056000 · 2026 · 87,394 vehicles
What's wrong: Please see the recall report for a complete list of all models. The engine starter May overheat and catch fire due to wear on an internal component.
Why it matters: Fire increases the risk of injury.
The fix: Dealers will replace the engine starter, free of charge. Owner notification letters were mailed July 21, 2026.
Most-reported problems
Owner complaints filed with NHTSA, by component. One complaint can list several components. 3 mention a fire, 1 injuries and 0 deaths were reported.
What owners describe
- Electrical (13): the most common themes are electrical failure (10), warning light on (4), fire / smoke (4).
- Engine (8): the most common themes are warning light on (3), electrical failure (2), fire / smoke (2).
- Other / unknown (5): the most common themes are fire / smoke (2).
- Airbags (4): no single recurring theme in the descriptions.
The 2021 BMW 330I has 29 owner complaints, ranking #10 of 23 330I model years for complaints (about average; the typical year has 35). Complaints peaked in 2025 (12 filed that year). The typical problem showed up when the car was about 4 years old, at a median of 32,270 miles. Neighboring years: 2020 (53 complaints, 11 recalls), 2022 (6 complaints, 3 recalls).
Engines & fuel economy (EPA)
| Engine | Transmission | Drive | City | Hwy | Comb. | Fuel |
|---|---|---|---|---|---|---|
| 2.0 L 4-cyl turbo | Automatic (S8) | Rear-Wheel Drive | 26 | 36 | 30 | Premium |
Want the full repair deets? Get the factory manual.
Recall and complaint data tells you what goes wrong. A service manual tells you how to fix it: torque specs, wiring diagrams, fluid capacities and step-by-step procedures for the 2021 BMW 330I.
Closest thing to the factory manual for most years. Pay once, keep it.
Most $25–$78, one-timePro-shop repair procedures, wiring diagrams and TSBs for your exact car.
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FAQ
Does the 2021 BMW 330I have any recalls?
Yes. NHTSA lists 7 vehicle recalls for the 2021 BMW 330I. Recall repairs are free at any dealer, no matter how old the car is. Check your VIN at nhtsa.gov/recalls.
What are the most common 2021 BMW 330I problems?
Owners have filed 29 complaints with NHTSA. The most-reported areas are electrical (13), engine (8), other / unknown (5).
What gas mileage does the 2021 BMW 330I get?
EPA ratings run up to 30 mpg combined (2.0 L, Automatic (S8)), across 1 engine and transmission combos.
Where can I get a 2021 BMW 330I repair manual?
eManualOnline sells downloadable manuals, Mitchell 1 DIY and ALLDATAdiy sell online access to factory repair data, and Haynes sells printed guides and online access. Pick a download if you want to keep it, or a subscription for wiring diagrams and TSBs.