What Size Wiper Blades for a 2017 Audi A4?

The 2017 Audi A4 typically uses a 24-inch wiper blade on the driver’s side and a 20-inch blade on the passenger’s side, with a 12-inch rear wiper on Avant (wagon) models; however, exact sizes and fittings can vary slightly by trim and market, so confirming with your owner’s manual or a fitment guide is important. This article explains the correct sizes, how to confirm compatibility, and what to consider when buying replacement wipers for your 2017 Audi A4.

Standard Wiper Blade Sizes for the 2017 Audi A4

For most 2017 Audi A4 sedans sold in North America and Europe, wiper blade sizing is standardized, but drivers should still understand the typical factory specifications and how body style affects rear wiper fitment.

• Driver’s side (front): 24 inches (approximately 600 mm)
• Passenger’s side (front): 20 inches (approximately 500 mm)
• Rear wiper (Avant / wagon models only): 12 inches (approximately 300 mm)

These measurements reflect the commonly specified sizes from major OEM-equivalent and aftermarket catalogues for the 2017 Audi A4 (B9 generation). While these lengths are widely accepted as standard, variations in regional equipment or earlier replacement hardware mean you should still double-check fitment before purchase.

How to Confirm the Correct Wiper Size for Your A4

Even when you know the typical sizes, it is wise to verify that your replacement blades match your specific vehicle configuration, especially if you bought the car used or outside your home market.

Check the Owner’s Manual and Vehicle Identification

The most reliable source of wiper specifications is Audi’s own documentation and identification data on your car. This helps avoid fitting errors that can affect visibility or damage the mechanism.

1. Consult the owner’s manual: Look under sections such as “Wipers and Washers” or “Maintenance” for factory-specified blade lengths and types.
2. Use the VIN if needed: Online parts catalogues or Audi dealers can use your Vehicle Identification Number to confirm the exact wiper part numbers for your trim and market.
3. Inspect existing blades: Many replacement blades have the size printed or molded on the rubber or metal spine; compare to catalogue recommendations.
4. Measure manually: If the markings are gone, use a tape measure to check the length of the existing blades from end to end.
5. Verify body style: Only Avant (wagon) models use a rear wiper; standard sedans do not, so rear-blade sizing applies only to the Avant.

Taking these steps ensures you are not simply relying on generic assumptions, which can be problematic if a previous owner installed non-standard arms, adaptors, or different-length blades.

Regional and Trim-Level Variations

While the 24″/20″ front combination and 12″ rear are the most common specifications, minor variations can occur based on market or optional equipment packages.

• European vs. North American models: Blade lengths are generally consistent, but exact part numbers and adaptor styles may differ.
• Factory aero / frameless blades: The B9 A4 typically uses aero-style beam blades; some aftermarket catalogues list slight differences in length tolerance.
• Special packages: Models with driver-assistance or weather packages typically keep the same lengths, but rely more heavily on correct wiping coverage for sensor performance.

These factors rarely change the core 24″/20″/12″ size pattern, but they can affect which specific replacement kit or adaptor system you should select for a perfect fit.

Types of Wiper Blades Suitable for the 2017 Audi A4

Beyond the correct length, the type and quality of wiper blade you choose can significantly affect performance, noise, and durability, especially at highway speeds and in harsh weather.

Beam (Aero) vs. Conventional Frame Blades

The 2017 Audi A4 is typically equipped from the factory with beam, or “aero,” style blades. Understanding the difference helps you match or improve upon OEM performance.

• Beam (aero) blades: Feature a single, curved, frameless design that applies even pressure across the windshield; they perform better at high speeds and in snow and ice.
• Conventional frame blades: Use an articulated metal frame with multiple pressure points; they are often cheaper but can be noisier and less aerodynamic.
• Hybrid blades: Combine elements of both, with a low-profile shell over a framed structure for improved aerodynamics and pressure distribution.

Most Audi owners opt to stay with beam-style blades that match the original equipment, as they maintain the intended wiping pattern and aerodynamic characteristics designed for the A4’s windshield.

Rubber Compound and Coatings

The rubber compound used in the blade affects how cleanly it wipes water and how long it lasts, particularly in climates with strong sun or heavy winter use.

• Natural rubber: Offers smooth wiping but can degrade faster under UV light and temperature extremes.
• Synthetic (silicone or blended) compounds: Typically last longer and may resist cracking, though they can cost more.
• Coated blades (graphite or Teflon-like): Often marketed for quieter, smoother operation and reduced chatter on the glass.

Selecting a higher-quality compound or coated blade may increase upfront cost, but it can deliver better visibility and longer service intervals, particularly for drivers who face frequent rain or snow.

Buying the Right Wiper Blades

When purchasing replacement wipers for a 2017 Audi A4, you should consider not only the length but also compatibility with the wiper arm mount and your driving conditions.

Fitment and Adaptor Systems

Modern wiper blades often come with multiple adaptors to fit a variety of arm types, including the specific mounts used on Audi vehicles.

1. Identify your arm type: The 2017 A4 commonly uses a specific “side pin” or “top lock” style arm designed for aero blades.
2. Select blades with compatible adaptors: Choose a kit that explicitly lists fitment for a 2017 Audi A4 or B9 A4 in its compatibility chart.
3. Use both blades from the same series: Matching driver and passenger blades from the same product line helps ensure uniform wiping performance and appearance.
4. Check for pre-mounted adaptors: Some premium blades designed specifically for European cars come with the correct Audi adaptor pre-installed.
5. Test fit before finalizing installation: Ensure the blade locks securely into place and can articulate fully without contacting trim or the hood.

Paying attention to adaptor compatibility reduces the risk of improper seating or unexpected detachment, which can compromise safety and potentially damage the windshield.

Where to Buy and What to Look For

Drivers can choose between OEM parts from Audi and a wide range of aftermarket options, each with different price and performance characteristics.

• Audi dealer / OEM blades: Offer guaranteed fit and original performance but are often more expensive.
• Reputable aftermarket brands: Well-known manufacturers publish fitment guides that explicitly list the 2017 A4 and often provide equal or better wiping performance.
• Online retailers with fitment tools: Many websites allow you to enter your vehicle year, make, and model to filter compatible wipers.
• Brick-and-mortar auto parts stores: In-store catalogues or staff can cross-reference your A4 and provide immediate availability.
• Check warranty and return policy: A good return option is useful if a supposedly compatible blade does not fit your particular arm style.

Balancing cost, brand reliability, and clear compatibility information is the most effective way to select wipers that will perform well and install easily on your 2017 Audi A4.

Maintenance and Replacement Intervals

Even correctly sized and well-fitted wiper blades will only perform reliably if they are maintained and replaced at appropriate intervals.

How Often to Replace Your Wiper Blades

Driving environment and storage conditions significantly affect how quickly wiper blades wear out on any vehicle, including the Audi A4.

• Typical replacement interval: Every 6–12 months, depending on climate and usage.
• Harsh climates: Very hot, sunny regions or areas with frequent snow and ice may require more frequent changes.
• Wear indicators: Streaking, smearing, chattering, skipping, or visible cracks in the rubber signal that blades should be replaced.

Monitoring these signs rather than relying solely on the calendar helps ensure you maintain clear visibility whenever weather conditions deteriorate.

Basic Care Tips to Extend Blade Life

Simple maintenance habits can prolong the usable life of your wiper blades and help them perform closer to their original condition.

1. Clean the rubber edge periodically: Wipe the blade gently with a damp cloth to remove dirt, road film, and salt.
2. Keep the windshield clean: Regularly wash the glass to reduce abrasion that accelerates blade wear.
3. Avoid dry wiping: Use the washer fluid before running the wipers on a dry or dusty windshield.
4. Lift blades in freezing conditions: In heavy snow or ice, lifting the blades off the glass when parked can prevent them from freezing in place.
5. Inspect during routine service: Add wiper inspection to your oil-change or seasonal maintenance checklist.

By incorporating these simple steps, you can get more consistent performance from your wipers and reduce the likelihood of sudden visibility problems during a storm.

Summary

The 2017 Audi A4 generally uses a 24-inch wiper blade on the driver’s side, a 20-inch blade on the passenger’s side, and a 12-inch rear blade on Avant (wagon) models. These sizes match the standard specifications listed by major OEM and aftermarket catalogues for the B9-generation A4. Because minor variations in arm style, trim, and prior replacements can exist, owners should always confirm fitment through the owner’s manual, VIN-based parts lookup, or measurement of existing blades. Choosing quality beam-style blades with the correct adaptors, and maintaining them properly, ensures optimal visibility and safety in all weather conditions.