Audi A5 Quattro Accessory Drive Belt Replacement Guide (2008-2018)
Everything you need to know about choosing the right new aftermarket accessory belt for your A5 Quattro.
- Replace the belt every 60,000-100,000 miles, but inspect it for cracks or fraying at every oil change.
- Squealing noises often point to a failing tensioner, not just the belt; it's best to replace the belt, tensioner, and idler pulleys as a kit.
- A broken belt will make the car undrivable by causing it to overheat and lose power steering.
- Aftermarket brands like Continental and Gates offer OEM-level quality for a lower price than genuine Audi parts.
When to Replace Your A5's Accessory Drive Belt
For the 2008-2018 Audi A5 Quattro, the accessory drive belt should generally be replaced every 60,000 to 100,000 miles. However, this is not a strict rule. Driving in extreme temperatures or dusty conditions can shorten the belt's life. The best practice is to have the belt visually inspected during every oil change for signs of wear. Look for cracks, 🎬 Watch: A mechanic explains how to test for intermittent belt noise. fraying, glazing (shiny spots), or contamination from oil or coolant.
Check for Related Failures
Often, a squealing noise isn't the belt itself but a failing belt tensioner or idler pulley. These parts keep the belt tight. If you're replacing the belt, it's highly recommended to replace the tensioner and idler pulleys at the same time. A worn tensioner can cause a new belt to fail prematurely. 🎬 See the top 7 symptoms of a bad belt tensioner. Also, check for oil leaks from nearby seals or sensors, as leaking oil can soak into the belt, causing it to soften and slip.
Choosing the Right Aftermarket Belt Brand
You don't need to buy a genuine Audi part to get great quality. Many aftermarket brands produce excellent belts, and some are even the original equipment manufacturer (OEM). Here’s a breakdown of available brands.
Tier 1: OEM Quality
- Continental (ContiTech): Widely considered the OEM supplier for Audi. Choosing a Continental belt is essentially getting the same quality as the dealer part without the high price tag. They are a top choice for European vehicles.
- Gates: A highly respected brand known for its quality and durability. Many professional shops use Gates belts, and they are a reliable choice for any engine in the A5 Quattro.
Tier 2: Reliable Aftermarket
- Bando & Mitsuboshi: These brands are major OEM suppliers for many Japanese automakers and are known for their high-quality manufacturing. They are a solid and dependable option for your Audi.
- Dayco: A well-known brand that produces belts for both OEM and the aftermarket. While their quality is generally good, some users report mixed experiences with their standard aftermarket line compared to premium brands. Their "W Profile" belts are designed to reduce noise on worn drives.
Tier 3: Budget-Friendly
- ACDelco: A reputable brand that offers a good balance of quality and price. While not specifically known for European applications, their products meet industry standards and are a viable budget-conscious choice.
Consider a Kit
Many brands offer complete kits that include the accessory belt, tensioner, and idler pulley(s). Buying a kit is often more cost-effective and ensures all the main wear components of the drive system are replaced at once for maximum reliability.
Accessory Drive Belt Replacement Costs for Audi A5 Quattro
The cost can vary depending on your engine and whether you replace just the belt or the entire kit with tensioners.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Belt Only | $14 - $76 |
| New OEM Belt Only | $65 - $95 |
| Shop Labor | $75 - $150 |
| Total Professional Replacement (Belt Only) | $100 - $250 |
| Total Professional Replacement (Belt, Tensioner & Idler Kit) | $250 - $450 |
Frequently Asked Questions
What are the first signs my drive belt is failing?
The most common first sign is a high-pitched squeal or chirping sound coming from the engine bay, especially when you start the car cold or turn on the A/C. You might also see the battery warning light flicker, notice the power steering feels heavy, or see the engine temperature rise.
Can I drive my A5 with a bad accessory belt?
It is not recommended. If the belt is just squealing, you might be able to drive a short distance, but you risk the belt breaking at any moment. If the belt breaks, the engine will overheat and you will lose power steering and battery charging, leaving you stranded.
Is replacing the accessory belt a DIY job?
Yes, for a mechanically inclined person with the right tools, this is a manageable DIY job. You will need a diagram of the belt's routing and a long-handled wrench or breaker bar (often a 16mm) to release the spring-loaded tensioner. However, access can be tight, so patience is required.
🎬 Watch this step-by-step walkthrough for replacing the belt and tensioner.Do I need to replace the tensioner and pulleys with the belt?
It is strongly recommended. The tensioner and pulleys wear out at a similar rate as the belt. A worn tensioner is a very common cause of belt noise and can cause a new belt to wear out quickly or slip off. Replacing them all at once is the most reliable repair.
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Technical Specifications
OEM Part Numbers: 06H903137C 06E903137T 06E903137AC 06B903137D 06J260849F
The specific belt length and rib count (e.g., 6PK or 7PK) varies depending on your A5's engine (2.0T, 3.2L, 3.0T) and model year. It is critical to verify the correct part number for your specific vehicle before ordering. Most belts are made from durable EPDM rubber.
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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.
- Audi A5 Quattro:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- When to Replace Your A5's Accessory Drive Belt
- Check for Related Failures
- Choosing the Right Aftermarket Belt Brand
- Tier 1: OEM Quality
- Tier 2: Reliable Aftermarket
- Tier 3: Budget-Friendly
- Consider a Kit
- Accessory Drive Belt Replacement Costs for Audi A5 Quattro
- Frequently Asked Questions
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