A Guide to Replacing Direct Ignition Coils on Your 2008-2014 Audi TT
Engine misfiring or running rough? Your ignition coils are the most likely cause.
- Ignition coil failure is extremely common on the 2008-2014 Audi TT 2.0T engine.
- Symptoms include a rough idle, loss of power, and a flashing check engine light with P030X codes.
- Replacement is very easy, takes less than 30 minutes, and is highly recommended as a DIY job.
- Always replace all four coils and the spark plugs at the same time for best results.
Understanding Ignition Coil Failure in the Audi TT
Ignition coil failure is one of the most common issues for the 2008-2014 Audi TT (Mk2) with the 2.0T engine. These parts are exposed to constant heat and vibration, which causes them to wear out over time. When a coil starts to fail, it can't produce enough voltage, leading to a weak or non-existent spark. This causes an engine misfire, which you will feel as rough running and poor performance.
Flashing Check Engine Light: What It Means
If your check engine light is flashing, it signals a severe engine misfire. This can allow unburned fuel to enter the exhaust system, potentially damaging the expensive catalytic converter. It is recommended to avoid heavy acceleration and get the vehicle inspected as soon as possible.
Symptoms of a Bad Ignition Coil
- Engine Misfires: The car may shake or shudder, especially at idle or during acceleration.
- Reduced Power: Your TT will feel sluggish and slow to respond.
- Rough Idle: The engine will not run smoothly when stopped.
- Check Engine Light: A solid or, more seriously, a flashing 🎬 Learn more about P0300 codes and common misfire symptoms. check engine light will appear on your dash.
- Worse Fuel Economy: An inefficient spark means wasted fuel.
Choosing the Right Aftermarket Ignition Coil
When replacing ignition coils, you have several options. While the dealer offers Original Equipment (OEM) parts, the aftermarket provides a range of quality and price points. For the Audi TT, many aftermarket brands meet or exceed OEM quality.
Brand Quality Tiers
Tier 1: OEM Supplier Brands (Bremi, Denso, Hella): These brands are known to supply parts directly to Audi and other German automakers. Choosing one of these ensures a high-quality part that is designed to meet the original specifications. Bremi, in particular, is often cited as an OEM supplier for these coils. These are the most recommended choice for reliability and performance that matches the original part.
Tier 2: Reputable Aftermarket Brands (Beck Arnley, Facet): These companies are well-known in the aftermarket world. While they may not be the original supplier to Audi, they produce reliable parts that offer a good balance between cost and quality. They are a solid choice for a daily driven vehicle.
Tier 3: Value-Oriented Brands (Prenco, Vemo): These brands focus on providing the most affordable options. They can be a good choice if budget is the primary concern, but their long-term durability may not match that of the higher-tiered brands.
Pro Tip: Replace Coils and Plugs Together
It is highly recommended to replace all four ignition coils at the same time. When one coil fails due to age, the others are likely not far behind. Since the job is simple, replacing them all at once saves you from future breakdowns. This is also the perfect time to replace your spark plugs, as you already have the coils removed.
🎬 See this step-by-step DIY guide for replacing coils and plugs.Cost of Replacing Audi TT Ignition Coils
| Part Type | Cost (Set of 4) |
|---|---|
| New OEM (Dealer) | $200 - $300 |
| New Aftermarket | $157 - $298 |
| Shop Labor | $50 - $100 |
Known Issues & Bulletins
The high failure rate of ignition coils on this engine was recognized by Audi. In May 2013, Audi released Technical Service Bulletin (TSB) 2033561/2, which addressed misfire faults. The bulletin instructed technicians to replace all four original ignition coils with an updated part (part number 07K905715F) if misfires were detected. This confirms that early failure was a known problem with a factory-issued solution. No safety recalls have been issued for this specific component.
Frequently Asked Questions (FAQ)
Is it hard to replace the ignition coils on a 2008-2014 Audi TT?
No, it is a very easy job that most DIY mechanics can complete in under 30 minutes. The process involves removing the plastic engine cover, unplugging the electrical connector from the coil, and pulling the coil straight up and out of the engine. No special tools are required, although an ignition coil puller can make it easier if they are stuck.
Do I need to replace all four coils at once?
Yes, it is strongly recommended. Ignition coils wear at a similar rate. If one has failed, the others are likely to fail soon. Replacing them all at once is preventative maintenance that can save you from multiple repairs.
What are the common fault codes for a bad ignition coil?
The most common codes are P0300 (Random/Multiple Cylinder Misfire) and P0301, P0302, P0303, P0304, which indicate a misfire in a specific cylinder (1, 2, 3, or 4 respectively). A code reader can help you confirm which cylinder is misfiring.
🎬 Watch a professional diagnostic test to identify a cylinder misfire.What is the difference between OEM and aftermarket coils?
OEM (Original Equipment Manufacturer) coils are the same parts sold at an Audi dealership. Aftermarket coils are made by other companies. High-quality aftermarket brands like Bosch, Bremi, or Denso often manufacture the original OEM part and offer the same quality at a lower price. So-called "performance" coils from brands like APR offer minimal to no benefit on a stock or lightly modified car over a fresh set of standard coils.
What is the OEM part number for the Audi TT ignition coil?
Several part numbers have been used. A common original number is 06E905115E. The updated part number mentioned in the Audi TSB is 07K905715F. Always verify the part number fits your specific vehicle before ordering.
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Technical Specifications
OEM Part Numbers: 06E905115E 06E905115B 07K905715F 06H905115B 07K905715G
This is a direct ignition, coil-on-plug system. Each coil has a 4-pin electrical connector. No gapping or adjustment is required.
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.
- Audi TT:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Understanding Ignition Coil Failure in the Audi TT
- Flashing Check Engine Light: What It Means
- Symptoms of a Bad Ignition Coil
- Choosing the Right Aftermarket Ignition Coil
- Brand Quality Tiers
- Pro Tip: Replace Coils and Plugs Together
- Cost of Replacing Audi TT Ignition Coils
- Known Issues & Bulletins
- Frequently Asked Questions (FAQ)
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