The 2021 BMW 4 Series has a risk grade of D. This grade is calculated from 7 NHTSA safety recalls, weighted by severity, recency, and temporal decay. Grades range from A+ (excellent) to F (avoid).

The 2021 BMW 4 Series has 7 known safety recalls on record. All recalls are repaired free of charge at authorized dealerships.

The most severe recall for the 2021 BMW 4 Series is classified as high. This indicates a serious safety concern that should be addressed promptly.

This model year has 7 recorded safety recalls. Model-level listings do not establish VIN-specific open recalls or whether this vehicle is safe to drive. Check your VIN and contact the manufacturer for recall instructions.

The receiver audio module in your vehicle is the part that makes sure you hear a warning to buckle up. In some 2019-2022 330i, 430i, and M models, this module might not work correctly, so you won't hear the seat belt warning. If you don't hear the warning to buckle up, you're more likely to get hurt in a crash. This is because you might not be secured properly in your seat. Your BMW dealer will update the software in your receiver audio module to ensure you hear the seat belt warning. This repair is free, and you should schedule it after checking repair availability with your dealer. This timing describes the original 2023 filing; contact your dealer now to confirm the free repair is available.

The Automatic Locking Retractor (ALR) in your seat belt is designed to keep you safe by locking the webbing in place in a crash. But in certain vehicles, it might not work as intended, failing to lock the webbing before it's fully retracted. If you're in a crash and the retractor doesn't lock the webbing, you could be at risk of serious injury because the seat belt won't keep you secure. Your dealer will check the seat belt retractor and replace it if it's faulty – at no cost to you. You should schedule the repair after checking repair availability with your dealer, and it's completely free. This timing describes the original 2021 filing; contact your dealer now to confirm the free repair is available.

The head-thorax air bag in your 430i or M440i 4 Series Convertible is designed to protect you in a side collision. In some cases, it might not deploy correctly. If the air bag doesn't work right, it could increase the risk of injury in a crash. This is a serious issue, and we want to make sure you're protected. Your BMW dealer will update the air bag system's software to ensure it works as intended – and this repair is free. You should schedule the update as after confirming availability with your dealer as possible. This timing describes the original 2021 filing; contact your dealer now to confirm the free repair is available.

The starter motor in your vehicle is the part that helps your engine turn over when you turn the key. In some 2021-2024 models, the starter motor can wear out and overheat, potentially causing a fire. If the starter motor overheats, it could catch fire and increase the risk of serious injury, especially if you're not near an exit or escape route. Your authorized BMW dealer will replace the starter motor with a new one, free of charge. You'll receive a letter when the repair is available, and you can also contact BMW customer service at 1-800-525-7417 for more information.

The starter assembly relay in your vehicle is a small electrical component that helps your engine turn over when you turn the key. In some 2019-2022 models, this relay can corrode and overheat. If the starter relay overheats and short circuits, it could cause a fire, which could spread quickly and be difficult to extinguish. Your BMW dealer will replace the faulty starter relay with a new one, at no cost to you. For now, park your vehicle in an open area away from buildings, and schedule the repair after checking repair availability with your dealer. This timing describes the original 2025 filing; contact your dealer now to confirm the free repair is available.