OEM vs Aftermarket Windscreens: What You Need to Know Before You Decide

If you’re here, chances are you’re dealing with a damaged windscreen and trying to decide between an OEM windscreen and an aftermarket windscreen. It sounds simple, but this choice can affect the safety, performance, and value of your vehicle especially if your car has ADAS features or is covered by insurance. Many vehicle owners don’t realise that even a small difference in glass can affect how sensors work, how the windscreen fits, or how much you’ll pay out-of-pocket. In this guide, we’ll explain the key differences, and help you choose what’s best for your car and your budget.

What Is an OEM and Aftermarket Windscreen?

If your vehicle has built-in technology like lane-keeping assist, emergency braking, adaptive cruise control, or rain-sensing wipers, then ADAS compatibility is something you can't afford to ignore during a windscreen replacement. These systems rely on cameras and sensors, many of which are mounted behind or around your windscreen. When the windscreen is replaced, even a small change in glass thickness, tint, or curvature can affect how these systems function. That’s why choosing between an OEM windscreen and an aftermarket windscreen becomes more than just a cost decision.

OEM windscreens are built to the vehicle’s exact specifications. This means the sensors are positioned properly, and the glass allows the cameras to function as intended. Aftermarket windscreens, on the other hand, may vary slightly in size or material. Even if it fits your car, it might not meet the tolerances needed for ADAS calibration. In many cases, the vehicle may need recalibration after the glass is fitted which can add to your repair cost and time. Some aftermarket glass brands are ADAS-compatible, but not all are, and not every repairer will tell you this upfront.

Insurance Coverage

One of the most common questions vehicle owners ask during a windscreen repair or replacement is: “Will my insurance cover an OEM windscreen?” The answer depends on your policy and unfortunately, most people don’t find out the full details until it’s too late. Most standard comprehensive insurance policies will cover a windscreen replacement, but they often approve payment for an aftermarket windscreen by default. That’s because aftermarket glass is more affordable and helps insurers keep calm costs low.

If you specifically want an OEM windscreen, you need to check if your policy includes OEM parts coverage. Some insurers offer this as an add-on, but many don’t and without it, you may have to pay the difference out of pocket. In some cases, the cost gap between OEM and aftermarket windscreens can be 20–50%, depending on the make and model of your car. Choosing between OEM and aftermarket glass can also depend on whether the damage is minor or more serious especially in cases where you’re wondering if windscreen crack repair is worth it based on your car’s condition and features.

If any of the points below apply to your situation, an OEM windscreen is likely the better choice for your vehicle:

• Your car is less than 5 years old, especially if it's still under warranty or lease.
• Your vehicle has ADAS features like forward collision alerts, lane assist, or built-in cameras behind the windscreen.
• You want to maintain resale value, especially for high-end or luxury models.
• You’ve had issues with aftermarket glass in the past, like poor fit, wind noise, or sensor problems.
• Your insurance covers OEM parts, or you’re willing to pay the difference for peace of mind.

If your car doesn’t rely heavily on advanced tech and you’re working with a tighter budget, here’s when an aftermarket option makes sense:

• You’re looking for a cost-effective repair, especially for older cars or vehicles not under lease or warranty.
• Your vehicle doesn’t use windscreen-integrated tech like ADAS or rain sensors.
• Your insurance only covers aftermarket glass, and you’re not concerned about brand logos or factory match.
• You're using a trusted repairer that installs high-quality aftermarket glass that meets Australian safety standards.

There’s no one-size-fits-all answer when choosing between an OEM and an aftermarket windscreen. If your car has ADAS, is under warranty, or you want a perfect factory match, OEM glass is a safer choice. For older vehicles or tighter budgets, a trusted aftermarket windscreen can work well. What matters most is proper installation, calibration, and honest advice. At Brisbane Windscreens, we help you choose the right option based on your car, your budget, and your safety. Contact us now to book your appointment.