What Size Wiper Blades Do You Need for a 2019 Audi A4?

The 2019 Audi A4 typically uses a 24-inch wiper blade on the driver’s side and a 20-inch blade on the passenger’s side, but exact sizes can vary slightly by trim and region, so checking your owner’s manual or an official parts catalog is recommended before purchasing.

Understanding the Correct Wiper Blade Sizes

For most 2019 Audi A4 sedans sold in North America and Europe, the standard configuration is a 24-inch (approximately 600 mm) driver’s side blade and a 20-inch (approximately 500 mm) passenger’s side blade. These dimensions ensure maximum coverage of the windshield without the blades colliding or overreaching the glass edge. However, minor variations in part numbers, mounting style, and sometimes size can occur between markets, trim levels, or if the car has specific packages.

Typical 2019 Audi A4 Wiper Blade Specifications

Front Wiper Blades

Most drivers only need to replace the front wiper blades, and these are the sizes most commonly specified for the 2019 Audi A4 sedan (B9 generation):

This list outlines the most commonly referenced wiper blade sizes and positions for a 2019 Audi A4, helping you match each blade to its correct side of the windshield.

• Driver’s side front wiper: 24 inches (≈ 600 mm)
• Passenger’s side front wiper: 20 inches (≈ 500 mm)
• Mounting type (typical): OE-style aero/beam blades with a vehicle-specific connector (often a top-lock or side-lock style, depending on manufacturer)

Together, these sizes provide broad coverage of the driver’s field of vision while maintaining the factory wiping pattern and avoiding contact between the blades at full sweep.

Rear Wiper (If Applicable)

The standard 2019 Audi A4 sedan in many markets does not have a rear wiper. However, certain variants, such as the A4 Avant (wagon/estate) or allroad, may include a rear wiper with its own blade size. Because this varies by body style and market, drivers of those models should reference their specific manual or dealership parts catalog for the exact rear wiper measurement.

How to Confirm the Correct Size for Your Specific A4

While 24-inch and 20-inch blades are widely accepted as correct for the 2019 Audi A4 sedan, it is wise to confirm before ordering—especially if your car is an Avant/allroad, S4, or was originally sold in a different region.

The following points explain practical ways to double-check the correct wiper blade size and type for your particular vehicle, reducing the risk of buying an incompatible product.

1. Consult the owner’s manual: The wiper blade sizes or part numbers are often listed in the “Maintenance” or “Technical data” section.
2. Use the official Audi parts catalog or dealer: A dealership or authorized parts counter can look up your car by VIN to confirm exact front (and rear, if applicable) blade sizes and part numbers.
3. Use reputable online fitment tools: Major wiper brands (Bosch, Valeo, Michelin, etc.) provide databases where you enter “2019 Audi A4” and body style to get recommended sizes and kit numbers.
4. Measure existing blades: If your current blades are original or known-correct replacements, you can remove and measure them end to end as a final verification.
5. Check the connector type: Beyond length, ensure the new blades match the specific arm connector style used on your A4 (for example, a vehicle-specific top-lock adapter rather than a generic hook).

By following these steps, owners can verify that both the length and mounting style of the new blades match what the 2019 Audi A4 requires, minimizing installation issues and performance problems.

Choosing Between OEM and Aftermarket Wiper Blades

Drivers can select either genuine Audi (OEM) blades or high-quality aftermarket alternatives. OEM blades are designed to match the original aero profile, connector, and wiping pattern exactly, while aftermarket options may offer cost savings, specialized rubber compounds, or improved winter performance.

This list describes key considerations when deciding between factory (OEM) wipers and aftermarket brands for a 2019 Audi A4, highlighting what matters most for safety and durability.

• Fit and compatibility: OEM blades will always match the arm and connector design; reputable aftermarket brands usually provide vehicle-specific adapters.
• Performance in heavy rain and snow: Premium beam-style blades, whether OEM or aftermarket, maintain even pressure for clear wiping across the curved windshield.
• Longevity: Higher-end rubbers (with graphite or silicone coatings) can last longer and stay quieter than budget options.
• Noise and streaking: Cheap, ill-fitting blades often chatter or leave streaks, especially at highway speeds—an issue less common with quality OEM or top-tier aftermarket blades.
• Cost: OEM blades are often more expensive, while name-brand aftermarket kits can deliver similar performance at a lower price.

Taking these factors into account helps Audi A4 owners balance cost, performance, and convenience when selecting replacement wiper blades in the correct 24-inch/20-inch configuration.

When and Why to Replace Your Wiper Blades

Even with the correct sizes, old or worn blades compromise visibility. Most manufacturers recommend replacing wiper blades roughly every 6–12 months, depending on climate and usage, or sooner if performance declines noticeably.

The following points highlight common warning signs that indicate your 2019 Audi A4’s wiper blades may need to be replaced, even if they are technically the right size.

• Streaking or smearing: Persistent lines of water or haze left after each pass indicate hardened or damaged rubber.
• Skipping or chattering: Blades that jump across the glass suggest poor contact, warping, or aged rubber.
• Cracks or splits: Visible tears in the rubber edge severely reduce wiping efficiency and can scratch the glass.
• Uneven clearing: Areas of the windshield that remain wet signal that the blade’s pressure is no longer evenly distributed.
• Noisy operation: Excessive squeaking or scraping sounds often accompany dried-out or worn blades.

Responding promptly to these signs by fitting new 24-inch (driver) and 20-inch (passenger) blades helps maintain clear vision in bad weather and preserves the windshield’s surface over time.

Summary

For a 2019 Audi A4 sedan, the commonly specified wiper blade sizes are 24 inches on the driver’s side and 20 inches on the passenger’s side, using slim aero or beam-style blades with a model-specific connector. Because there can be minor variations between trims, regions, and body styles such as the Avant or allroad, owners should confirm these measurements via the owner’s manual, a VIN-based parts lookup, or a trusted fitment guide. Once verified, choosing quality OEM or reputable aftermarket blades and replacing them regularly ensures reliable, streak-free visibility in all driving conditions.

What size wiper blades for Audi A4?

24″ 24″ 20″ –
Audi A4 Wiper Size Comparison Chart

Year	Driver Side	Passenger Side
2020	24″ 24″	20″ – 24″ 20″ – 24″
2019	24″ 24″	20″ – 24″ 20″ – 24″
2018	24″ 24″	20″ – 24″ 20″ – 24″
2017	24″ 24″	20″ – 24″ 20″ – 24″

Can I use a 28 wiper instead of 26?

No, you should not use a 28-inch wiper instead of a 26-inch one because the larger blade can cause damage and leave uncleared areas. The 28-inch blade is likely too long and may physically hit the other blade, the edge of the windshield, or the A-pillar, leading to damage to the blades, the wiper motor, or your car’s paint. Using the manufacturer-recommended size ensures a proper fit and function. 
This video explains why wiper blades are different sizes: 57sHistory of Simple ThingsYouTube · Jun 27, 2025
Risks of using a larger wiper blade

• Physical damage: A 28-inch blade is likely to be too long, causing it to hit the other wiper arm or the edge of the windshield. 
• Wiper motor strain: The larger, heavier blade can force the wiper motor to work harder, leading to premature wear and tear. 
• Improper contact: The blade may not conform to the curve of the windshield properly, leaving streaks and uncleared spots that reduce visibility. 
• Potential for damage: Uneven pressure from an improperly fitted blade can potentially scratch or crack the windshield. 

How to find the correct size

• Check your owner’s manual: The correct wiper blade size is listed in your vehicle’s owner’s manual. 
• Use an online guide: Most auto parts stores have online tools where you can enter your vehicle’s make and model to find the exact size needed. 

Do Audis need special wiper blades?

Modern Audis might favor beam blades for their arc matching the windshield’s curvature, whereas older models may still employ conventional blades. In any case, your choice should bolster the clear vision and premium feel synonymous with owning an Audi.

What wiper blades does Audi use?

Audi uses different wiper blade sizes and types depending on the specific model and year, so there is no single answer. For example, a 2019–2025 Audi sedan typically uses a 24-inch driver-side blade and a 20-inch passenger-side blade, while an Audi Q7 from 2023 uses 26-inch to 28-inch driver-side blades and a 15-inch rear blade. To find the correct size, it’s best to check your car’s owner’s manual or use an online vehicle lookup tool with your car’s specific details. 
Example wiper blade sizes for common Audi models

• Audi Sedan (2019–2025): 24-inch (driver) and 20-inch (passenger) 
• Audi A4 (2020): 24-inch (driver) and 20-inch (passenger) 
• Audi Q7 (2023): 26–28-inch (driver) and 15-inch (rear) 

Tips for finding the right wiper blades

• Use your owner’s manual: The manual will have the precise measurements for your vehicle’s original equipment manufacturer (OEM) parts.
• Use an online lookup tool: Websites like Audi Great Neck, AutoZone.com, or Advance Auto Parts have tools where you can enter your car’s make, model, and year to find compatible parts. 
• Check the part number: You can find the OEM part number for your car’s wipers on an old blade or through an OEM parts supplier, such as Audi OEM Parts Online. 
• Consider aftermarket options: Many reputable brands like Bosch, Rain-X, and others make high-quality wiper blades that are compatible with Audi vehicles, like those found on AutoZone.com or Advance Auto Parts.