A Guide to Replacing Ignition Coils on the 2018-2023 BMW X5 (G05)
Fix engine misfires and restore performance by choosing the right ignition coils for your X5.
- For best results and reliability, use OEM supplier brands like Eldor, Bosch, or Delphi.
- It is strongly recommended to replace all ignition coils at the same time, along with the spark plugs.
- A failing ignition coil can lead to costly damage to your catalytic converters if ignored.
- This is a simple DIY job that requires basic tools and can be completed in under two hours.
Symptoms of a Failing Ignition Coil
When an ignition coil starts to fail on your X5, the signs are usually noticeable. Because each cylinder has its own coil, a single failure can disrupt the engine's balance. Look out for these common symptoms:
🎬 Watch: Top 20 reasons for engine misfires on your BMW X5- Engine Misfires and Rough Idle: This is the most common sign. Your engine may shake, sputter, or vibrate, especially when you're stopped at a light or accelerating.
- Check Engine Light: A misfire will almost always trigger the check engine light on your dashboard. Common trouble codes include P0300 (random misfire) or P0301 through P0308, which point to a specific cylinder.
- Loss of Power: Your X5 may feel sluggish or slow to accelerate because one or more cylinders aren't contributing their full power.
- Worse Gas Mileage: When the engine misfires, the computer may try to compensate by using more fuel, causing your fuel economy to drop.
- Stalling or Trouble Starting: In more severe cases, complete coil failure can make the engine hard to start or cause it to stall while driving.
Don't Ignore a Failing Coil
Driving with a misfiring engine for too long is not recommended. Unburnt fuel from the misfiring cylinder can pass into the exhaust and damage the expensive catalytic converters.
Known Issues for 2018-2023 BMW X5
While there have been no major recalls for ignition coils on the G05 X5, BMW has issued Technical Service Bulletins (TSBs). These are communications sent to dealers about known issues. TSBs have been released for certain 2019-2023 models concerning ignition coils that may have been produced with manufacturing defects in their insulation or were not made to exact specifications, potentially causing the engine to run irregularly.
Choosing the Right Aftermarket Ignition Coil
Not all aftermarket coils are created equal. For a precision-engineered vehicle like the BMW X5, the quality of your ignition components matters. Here’s how to think about your options:
Tier 1: OEM / OES Brands
These are the companies that make the original parts for BMW. They offer the best fit and reliability. For the G05 X5, the primary Original Equipment (OE) supplier is Eldor. Other brands that have historically been OE suppliers for BMW and are trusted choices include Bosch and Delphi. Choosing one of these brands is the safest way to ensure dealer-level quality.
Tier 2: Quality Aftermarket Brands
These brands are well-known for producing reliable parts that meet or exceed OE standards. They are a great balance of price and quality. Look for names like NGK, Standard Ignition (Standard Motor Products), and Hitachi. These are solid choices for owners who want a dependable part without paying the premium for a logo.
Tier 3: Budget-Friendly Brands
These brands offer a lower price point, which can be attractive. Options include URO Parts, DriveWire, Holstein, and others. While they can save you money upfront, their long-term durability on a high-performance engine can be a gamble. Some, like Holstein and URO Parts, back their products with multi-year warranties, which can provide some peace of mind.
Pro Tip: Replace Coils and Plugs Together
It is highly recommended to replace all ignition coils at the same time, not just the one that failed. This ensures consistent performance and prevents you from having to do the same job again when the next old coil fails. Since you have to remove the coils to get to the spark plugs, it's the perfect time to replace your spark plugs as well.
🎬 Watch: How to change spark plugs on a BMW X5 G05Ignition Coil Replacement Cost for 2018-2023 BMW X5
The cost can vary depending on the brand of parts you choose and whether you do the work yourself. The job is very DIY-friendly.
| Part / Service | Estimated Cost |
|---|---|
| New OEM/OES Ignition Coils (Set of 6 or 8) | $240 - $800 |
| New Aftermarket Ignition Coils (Set of 6 or 8) | $180 - $400 |
| Shop Labor Cost | $107 - $157 |
Frequently Asked Questions
Should I replace all ignition coils at once?
Yes. Coils are subjected to the same heat and wear over time. If one has failed, others are likely nearing the end of their service life. Replacing them all at once ensures reliability and consistent engine performance.
Can I install a new ignition coil myself?
Absolutely. Replacing ignition coils on the X5 is a straightforward job for a DIYer. It requires basic tools, involves removing the engine cover, disconnecting the electrical connector, and pulling the coil off the spark plug. The difficulty is low and can usually be done in under two hours.
🎬 See this walkthrough on how to change BMW ignition coilsWhat is the difference between OEM and aftermarket coils?
OEM (Original Equipment Manufacturer) coils are made by the same company that supplied BMW for the factory, like Eldor or Bosch. They guarantee a perfect fit and performance. Aftermarket coils are made by other companies and come in a range of quality and price, from high-quality alternatives like NGK to budget options.
How often do BMW ignition coils need to be replaced?
Ignition coils don't have a strict replacement schedule like spark plugs. They are typically replaced only when they fail. However, they can last up to 140,000 miles or more under normal conditions. Factors like engine heat and the condition of your spark plugs can affect their lifespan.
Helpful Videos
Technical Specifications
OEM Part Numbers: 12138643360 12138615991 12138678438 12138647463 12137619385
This is a coil-on-plug (pencil type) ignition system. One coil is required per cylinder. The 2018-2023 X5 was available with 6-cylinder (B58) and 8-cylinder (N63/S63) engines, so be sure to order the correct quantity for your vehicle.
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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 X5:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Symptoms of a Failing Ignition Coil
- Don't Ignore a Failing Coil
- Known Issues for 2018-2023 BMW X5
- Choosing the Right Aftermarket Ignition Coil
- Tier 1: OEM / OES Brands
- Tier 2: Quality Aftermarket Brands
- Tier 3: Budget-Friendly Brands
- Pro Tip: Replace Coils and Plugs Together
- Ignition Coil Replacement Cost for 2018-2023 BMW X5
- Frequently Asked Questions
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