What Size Wiper Blades for an Audi A4?

The most common front wiper blade size for recent Audi A4 models is 24 inches (driver’s side) and 20 inches (passenger’s side), but the correct size can vary slightly by model year and body style, so owners should always confirm against the vehicle manual, VIN-based parts lookup, or an online fitment guide before buying.

Why Wiper Blade Size Matters on the Audi A4

The Audi A4’s wiper system is engineered to match the curvature and sweep of the windshield. Using blades that are too long can cause chattering, missed areas, or even collision between blades, while blades that are too short reduce visibility and leave larger unwiped zones. Because Audi has produced the A4 as a sedan, Avant (wagon), Allroad, and S/RS performance variants across multiple generations, blade sizes and attachment systems are not fully uniform.

Typical Wiper Blade Sizes by Audi A4 Generation

While exact specifications can differ by market and trim, most modern A4 sedans and Avants share a broadly similar wiper pattern. Below is a breakdown of commonly used sizes by generation and approximate model years, based on manufacturer fitment data and major parts catalogues. Drivers should still cross-check with their specific vehicle details.

B9 Generation (2017–Present: A4, S4, Allroad, many markets through 2024)

The current B9 generation (including facelift/“B9.5”) uses a streamlined beam-blade system. Blade lengths are largely consistent across sedan and wagon variants, though part numbers can vary by region.

• Front driver’s side: 24 inch (approximately 600 mm)
• Front passenger’s side: 20 inch (approximately 500 mm)
• Rear (Avant/Allroad only): typically 13 inch (approximately 330 mm)

For B9 models, those front dimensions (24″/20″) are widely recognized by major brands such as Bosch, Valeo, and Trico as the default fit, while the Avant/Allroad tailgate glass typically takes a small, single rear blade around 13″. Owners should verify with a parts lookup against their VIN, especially on early-facelift vs. late-facelift models.

B8 Generation (2009–2016: A4, S4, Allroad)

The B8 generation also standardizes around the 24″/20″ front wiper configuration on most markets, with separate rear sizes for wagons and Allroad variants.

• Front driver’s side: 24 inch
• Front passenger’s side: 20 inch
• Rear (Avant/Allroad): typically 15 inch (around 380 mm), though some markets list ~14–15 inch options

While the front blade lengths mirror the B9, the rear blade on B8 Avants and Allroads is usually a bit longer than on the newer B9. Because Audi offered different rear wiper arms in some regions, it is especially important for wagon owners to check the exact rear size via the manual or an online catalog.

B7 & Earlier Generations (Up to 2008)

Older generations of the Audi A4 (B7, B6, B5) used a mix of conventional and early aero-style blades. Sizes are similar but not identical to newer models, and some years have slight asymmetries or different rear wipers depending on whether the car is a sedan or Avant.

• Common front setup: 21–22 inch driver’s side and 19–21 inch passenger’s side (varies by year and region)
• Rear (Avant): typically around 15 inch, though some markets list 13–15 inch options

Because these earlier A4 models span many years and running changes, owners of pre-2009 cars should not rely solely on “typical” sizes; instead, they should confirm via registration/VIN lookups or by directly measuring the old blades.

How to Confirm the Correct Wiper Size for Your Specific A4

Although most recent Audi A4s use the 24″/20″ combination up front, there are enough exceptions—especially outside North America and Europe—that a quick verification is worthwhile. Multiple reliable methods are available to ensure an exact match.

1. Check the Owner’s Manual

The owner’s manual remains one of the most straightforward sources of accurate fitment data. It typically lists the wiper blade lengths and sometimes the Audi part numbers.

1. Locate the “Wiper Blades” or “Maintenance” section in the manual.
2. Look for a table or diagram specifying front and rear wiper sizes.
3. Note both the length (in inches or millimetres) and any indications about special aero or winter blades.

The manual’s data reflect the configuration Audi engineered for your exact model and market, making it the most authoritative reference for sizing.

2. Use an Online Parts or Fitment Lookup

Major wiper manufacturers and large auto parts retailers provide VIN-based or registration-based fitment tools that map directly to their product ranges.

1. Visit a reputable site (e.g., a major retailer or a well-known wiper manufacturer).
2. Enter your car’s year, make, model, and, where possible, body style (sedan, Avant, Allroad).
3. Confirm that the suggested sizes match both sides of the windshield and, if applicable, the rear window.

These tools are updated regularly to reflect new model years and mid-cycle changes, so they are particularly useful for 2023–2024 A4s where the manual might be less accessible.

3. Measure the Existing Blades

If your current blades are factory-fitted or known-correct replacements, measuring them directly is an effective way to confirm size—especially for older A4s where documentation may be missing.

1. Lift the wiper arm away from the glass carefully.
2. Use a tape measure to record the length of the rubber wiping edge from one end to the other.
3. Repeat the process for the opposite front blade and, if applicable, the rear blade.

Direct measurement provides an immediate reality check, though it should be combined with a fitment guide if you suspect a previous owner may have installed an incorrect size.

Types of Wiper Blades Suitable for the Audi A4

Beyond length, A4 owners must choose a blade type that matches both the mounting system and the driving conditions. Modern A4s are largely designed for beam-style blades, but alternatives exist for specific climates and budgets.

Beam (Aero) Blades

Most B8 and B9 Audi A4s use beam or “aero” blades from the factory. These have a low-profile, spoiler-like design that improves contact at high speeds and in crosswinds—conditions common on European motorways and U.S. interstates.

• Provide uniform pressure along the length of the blade.
• Reduce lift and noise at higher speeds compared with traditional framed blades.
• Typically better suited to the curved windshields of modern A4s.

For owners who want to preserve factory performance and aesthetics, OEM or high-quality aftermarket beam blades in the correct 24″/20″ configuration are usually the best option.

Conventional (Bracketed) Blades

Conventional blades have an external metal frame with multiple pressure points. They are common on older vehicles and low-cost replacements.

• Usually cheaper than beam blades.
• More likely to accumulate ice and snow on the frame.
• Not typically recommended for newer A4s that were designed around aero-style blades.

While bracketed blades can technically be fitted to some A4 models with compatible adapters, many owners find they underperform compared with the beam blades Audi originally specified.

Winter or All-Weather Blades

In regions with severe winters, specialized blades can improve performance in snow, slush, and ice, where standard aero blades may hold onto buildup.

• Feature protective rubber boots or coatings to reduce ice accumulation.
• Often heavier and more robust than standard blades.
• Available in 24″/20″ and common A4 rear sizes from several manufacturers.

Drivers in snow-belt regions frequently keep a dedicated set of winter blades, swapping them in for the colder months to maintain consistent windshield clearing.

Recognizing When to Replace Audi A4 Wiper Blades

Even correctly sized wiper blades will lose effectiveness over time as rubber degrades from heat, UV exposure, road grime, and mechanical wear. Knowing when to replace them can be as important as choosing the right size.

Warning Signs of Worn Blades

Several clear symptoms indicate that your Audi A4’s wipers are overdue for replacement, regardless of their size or brand.

• Streaking or smearing across the windshield.
• Chattering, skipping, or noisy operation even on a wet surface.
• Uneven wipe pattern, with missed arcs or bands of water.
• Visible cracks, splits, or hardened rubber on inspection.

Any of these signs mean the blades are no longer conforming properly to the glass, reducing visibility and undermining the performance that the A4’s safety systems rely on—especially in rain or snow.

Recommended Replacement Intervals

Most experts suggest a regular replacement schedule, even if obvious symptoms have not yet appeared, because degradation is gradual and can be hard to notice.

• Every 6–12 months for daily-driven vehicles in mixed climates.
• More frequently in hot, sunny regions where UV damage is severe.
• At least once a year for the rear wiper on Avant and Allroad models.

Following these intervals—combined with occasional cleaning of the rubber with a damp cloth—helps ensure that correctly sized 24″/20″ (or model-specific) blades continue to perform effectively on your Audi A4.

Practical Buying Tips for Audi A4 Owners

Once you know the correct wiper size for your A4, choosing and purchasing the blades becomes a question of quality, compatibility, and convenience rather than guesswork.

OEM vs Aftermarket

Audi offers OEM blades under its own part numbers, while major aftermarket suppliers provide direct-fit alternatives that match both size and attachment style.

• OEM blades: typically highest in price but guarantee factory-spec performance and fit.
• Premium aftermarket (e.g., Bosch, Valeo, Trico): often match or closely approach OEM performance at a lower cost.
• Budget aftermarket: cheaper, but may wear faster or perform poorly in heavy rain.

Many A4 owners choose premium aftermarket beam blades in the standard 24″/20″ combination as a cost-effective compromise between price and reliability.

Ensuring Correct Attachment Type

Modern A4 wiper arms often use specialized adapters—such as side pin, top lock, or push-button connectors—rather than simple hook arms. Buying based on size alone can therefore lead to mounting issues.

• Check your existing wiper arm style before ordering replacements.
• Confirm that the new blades include the proper adapter for Audi-specific arms.
• Follow the supplied installation instructions carefully to avoid damaging the windshield.

Verifying both size and connector style prevents installation headaches and ensures that your new 24″/20″ blades will fit securely and operate smoothly.

Summary

For most modern Audi A4 models—particularly the B8 (2009–2016) and B9 (2017–present) generations—the standard front wiper blade sizes are 24 inches for the driver’s side and 20 inches for the passenger’s side, with Avant and Allroad variants adding a rear blade typically around 13–15 inches. Earlier generations can differ slightly, especially on the driver’s and passenger’s sides. Because of these variations, the most reliable approach is to confirm the exact sizes and attachment style using the owner’s manual, a VIN-based parts lookup, or direct measurement of the existing blades. Once the correct size is known, choosing quality beam-style or winter blades and replacing them regularly helps maintain clear visibility and preserves the safety and refinement that define the Audi A4.

What size windshield wipers for 2012 Audi A4?

The correct windshield wiper sizes for a 2012 Audi A4 are 24 inches for the driver’s side and 20 inches for the passenger’s side. Some models, such as the wagon, will also have a rear wiper that is typically 15 inches, though this may vary. 

• Driver’s side: 24 inches
• Passenger’s side: 20 inches
• Rear: 15 inches (for some models like the wagon)

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 size wipers for Audi A4?

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

Year	Driver Side	Passenger Side
2019	24″ 24″	20″ – 24″ 20″ – 24″
2018	24″ 24″	20″ – 24″ 20″ – 24″
2017	24″ 24″	20″ – 24″ 20″ – 24″
2016	24″ 24″	20″ – 24″ 20″ – 24″

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.