Guide to 2016-2024 BMW 330i Engine Mount Replacement
Feeling a new vibration in your BMW 330i? Your engine mounts might be the cause.
- Engine mounts on the 2016-2024 BMW 330i are a common failure item, often before 50,000 miles.
- Use OEM-style hydraulic mounts; Corteco is the OEM supplier and offers the best quality.
- Avoid solid or budget mounts like Anchor, as they cause excessive vibration and fail quickly.
- Always replace mounts in pairs to ensure balanced support and prevent premature wear.
Is Your Smooth BMW Ride Suddenly... Rough?
The engine mounts on the BMW 330i (F30 and G20 generations) are known to be a common wear item. BMW designed them to be very soft to isolate the cabin from the 4-cylinder engine's vibrations, but this focus on comfort comes at the cost of durability. Many owners report failures in as little as 35,000-40,000 miles. When they fail, the hydraulic fluid leaks out, the rubber collapses, and the engine is no longer properly supported. This leads to a number of symptoms that can ruin your driving experience.
🎬 Watch a breakdown of common BMW engine mount failure symptoms.Top 5 Symptoms of a Failing Engine Mount
- Increased Vibration: This is the most common sign. You'll feel a new, persistent vibration through the steering wheel, seats, and floor, especially when the car is idling.
- Clunking or Banging Noises: Loud clunks when you accelerate, decelerate, or shift into gear mean the engine is moving too much and hitting other parts.
- Visible Engine Movement: Pop the hood and have a friend lightly rev the engine while the car is in park. If you see the engine rock or lift significantly, a mount has failed.
- Leaking Fluid: The hydraulic mounts on the 330i are filled with fluid. If you see dark, oily fluid on the subframe directly below the engine, it's a clear sign of a leaking mount.
- Rough Shifting: A misaligned engine can put stress on the transmission, leading to rough or hesitant gear changes.
Known Issues for 2016-2024 BMW 330i
The soft, fluid-filled (hydraulic) engine mounts used on the F30 and G20 330i models are a known weak point. They are designed for maximum comfort, but this makes them prone to premature failure. The driver's side mount often fails first due to engine torque. There are no official recalls or widespread Technical Service Bulletins (TSBs) for this issue, as it is considered a wear-and-tear item by the manufacturer.
Choosing the Right Aftermarket Engine Mount
When replacing your engine mounts, you have a few options. Sticking with an OEM-style hydraulic mount is key to preserving the car's smooth ride. Solid rubber or polyurethane mounts are available but will introduce significant noise, vibration, and harshness (NVH) into the cabin, which is not ideal for a daily-driven 330i.
- Tier 1: OEM Supplier (Corteco): Corteco is the original equipment manufacturer for BMW's engine mounts. Choosing Corteco gets you the exact same part as the dealer, often without the BMW logo stamped on it, for a lower price. This is the best choice for restoring original ride quality and performance. Some owners opt for the slightly stiffer Corteco mounts designed for the M340i, which are a direct fit and offer a bit more durability without much extra vibration.
- Tier 2: Standard Aftermarket (DEA, Westar): Brands like DEA and Westar offer more budget-friendly options. While they are designed to be direct replacements, the quality of the rubber and internal hydraulics may not match OEM standards. Reviews are mixed; some users find them acceptable for the price, while others report a shorter lifespan and less effective vibration damping compared to OEM.
- Tier 3: Economy (Anchor): Anchor is known for being one of the cheapest options available. However, forum discussions and reviews are overwhelmingly negative, citing poor fitment, very short lifespan (sometimes failing in months), and causing more vibration than they solve. They are generally not recommended for a BMW.
Pro Tip: Always replace engine mounts in pairs (left and right). Replacing only one failed mount puts extra stress on the new part and the remaining old one, leading to premature failure of both.
Cost to Replace BMW 330i Engine Mounts
| Part/Service | Estimated Cost |
|---|---|
| New OEM Engine Mounts (Pair) | $300 - $400 |
| New Aftermarket Engine Mounts (Pair) | $188 - $390 |
| Shop Labor Cost | $350 - $600 |
| Total Professional Replacement | $538 - $1000+ |
Frequently Asked Questions (FAQ)
How many engine mounts does my 330i have?
The BMW 330i uses two main engine mounts, one on the driver's side and one on the passenger's side. It also has a transmission mount that supports the rear of the drivetrain, which should be inspected at the same time.
Can I drive with a bad engine mount?
You can, but it's not recommended for long. Continued driving with a failed mount allows for excessive engine movement, which can damage coolant hoses, electrical wiring, exhaust components, and even the transmission. It's best to get it fixed as soon as possible.
Is this a DIY-friendly job?
For an experienced DIYer, yes. The replacement requires supporting the engine from above with an engine support bar or carefully from below with a jack and block of wood. Access to some bolts is tight, especially on the driver's side, and may require removing wheel liners and underbody panels. It typically takes 2.5 to 5 hours.
🎬 Follow this step-by-step guide to replacing G20 B48 motor mounts.Should I use solid rubber or polyurethane mounts for my 330i?
For a daily-driven car, no. While they are more durable, solid mounts will transfer a huge amount of engine vibration and noise into the cabin, making the car feel harsh and unpleasant. Stick with OEM-style hydraulic mounts to maintain the ride quality you expect from a BMW.
Why did my mounts fail so quickly?
The B48 4-cylinder engine in the 330i is not as naturally balanced as BMW's inline-6 engines. To compensate and provide a luxury feel, BMW used very soft hydraulic mounts that absorb vibration well but wear out quickly. It's a trade-off of comfort for durability.
Helpful Videos
Technical Specifications
OEM Part Numbers: 22117581617 22117581618 22116860490 22116859413 22116859414
The BMW 330i uses two hydraulic, fluid-filled engine mounts. The driver's side and passenger's side mounts are different parts and are not interchangeable. The F30 generation (2016-2018) and G20 generation (2019-2024) may use different part numbers, so verifying fitment by VIN is critical.
We Have This Part in Stock
The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- BMW 330i: