A cracked windscreen is one of those situations in every driver's life that happens at the worst possible moment. You are driving on the motorway, the truck ahead kicks up a small stone, you hear that distinctive "tick" and there is a crack that spreads with each passing day. Or you wake up in the morning and see that someone has broken your side window. In both cases, you need a new piece of glass. And then the question comes: does it have to be a brand-new piece of glass, or can a used one do the job just as well?
The answer depends on the type of glass and the situation. We will break down all the options, the pros and cons of used car glass and help you make an informed decision.
Types of car glass and their specifics
A car has several types of glass, and each has different characteristics, different production technology and different replacement prices.
Windscreen (front)
The windscreen is the most complex and most expensive piece of glass on your car. It is made of two layers of tempered glass with a PVB (polyvinyl butyral) film between them. This sandwich construction ensures that the glass does not shatter into sharp pieces on impact but stays in place thanks to the film. That is a safety feature because the windscreen contributes to the structural strength of the cabin and serves as a backstop for the passenger airbag to deploy against.
Modern windscreens are a long way from a plain piece of glass. They can include:
- Heating - thin wires or a conductive coating for de-misting
- Rain sensor - an optical sensor for automatic wipers
- Light sensor - for automatic headlight activation
- Advanced driver-assistance (ADAS) camera - a camera for lane-departure warning, automatic braking and similar systems
- Head-up display (HUD) projection - a special coating for projecting data onto the glass
- Acoustic layer - an extra film to reduce cabin noise
- UV filter - for protection from ultraviolet radiation
- Heat filter - for reducing cabin heating
Every one of these features increases the price of a new windscreen. A windscreen with an ADAS camera and HUD for a newer BMW or Mercedes can cost EUR 800-1500 for the glass alone, without fitting and camera calibration.
Side windows
Side windows are made of tempered glass. When they break, they crumble into small, relatively harmless pieces. That is a safety feature that allows people to get out of the vehicle in emergencies.
On a car you can distinguish:
- Front side windows - in the front doors, usually raised and lowered by an electric motor
- Rear side windows - in the rear doors, also usually able to drop down
- Fixed side windows - small fixed triangular or rectangular pieces on the B or C pillar
- Rear quarter windows - on estates and SUVs, behind the rear doors
Side windows are simpler than windscreens and usually contain no sensors or heating (except for the rear fixed windows on some models). That makes them cheaper to replace.
Rear window
The rear window is also tempered glass but almost always has built-in heating (visible horizontal wires) and sometimes an antenna for the radio or GPS. When it breaks, it crumbles into small pieces like the side windows.
Used glass: when it makes sense and when it does not
Here is an honest assessment for each type of glass:
Windscreen: used is rarely a good option
For a windscreen, used is usually not advisable for several reasons:
- Used glass almost always has micro-scratches from the wipers that reduce visibility, especially when driving towards the sun
- It can have invisible micro-cracks from temperature changes that weaken the structure
- The PVB film degrades with time and loses adhesion, which weakens the safety function
- If the glass has sensors (rain, ADAS camera), the used glass must be identical in specification, and the camera needs calibration
There are situations where a used windscreen makes sense: if you have an older car (15+ years), if a new windscreen for your model is no longer in production, or if you need a temporary solution while you wait for a new one. In those cases, used glass without visible damage can be an acceptable solution.
Side windows: an excellent candidate for used
Side windows are ideal for buying used because:
- They have no wipers, so they have no scratches from use
- Tempered glass either shatters completely or stays fully intact, with no partial damage
- They have no complex sensors or layers
- Fitting is relatively simple
A used side window that is visually clean and free of scratches is functionally identical to a new one. The only things to watch are that the glass moves smoothly in the runners (if it is a door window) and that the seals are in good condition.
Rear window: a good option for used
The rear window is also a good candidate for used, but with one condition: the heating must work. Visually check the condition of the heating wires and test the function if you can. A broken heating wire can be repaired with conductive paste, but only if the damage is small (one or two wires).
How much does used car glass cost?
Prices vary by model, but here are approximate ranges:
Side windows (used)
- Front side (door) - EUR 20 to 60
- Rear side (door) - EUR 20 to 50
- Fixed side (triangular) - EUR 15 to 40
- Premium models - up to EUR 100 for glass with extra features
Rear window (used)
- Saloon and hatchback - EUR 30 to 80
- Estate and SUV - EUR 40 to 100
- With heated antenna - EUR 50 to 120
Windscreen (used, when available)
- Standard without sensors - EUR 50 to 150
- With rain sensor - EUR 80 to 200
- With ADAS camera - rarely available used, EUR 150 to 400
For comparison, a new side window for an average car costs EUR 80-150, and a new windscreen EUR 200-600 (without sensors). With an ADAS sensor, a new windscreen easily exceeds EUR 1000. The saving on used glass is 50-70%, which on more expensive models means hundreds of euros.
What to watch for when buying used car glass
OEM markings
Every factory-made piece of car glass has markings either stamped into the glass or printed in black. These markings include the manufacturer (Saint-Gobain/Sekurit, Pilkington, AGC, etc.), the type of glass (laminated, tempered), a homologation mark (E-mark) and the year of manufacture. Check that the markings are present and match your model of car.
Scratches and damage
Inspect the glass at an angle towards a light source. Scratches visible in sunlight can seriously interfere with driving, especially on a windscreen. Side and rear glass are less critical, but deep scratches are still undesirable.
Dimensions and shape
Car glass is specific to each model and year. There is no "universal" car glass. Check the OEM part number of the glass (usually stamped in a corner) and compare it with the number for your specific model.
Tinted or not
If your car has factory-tinted glass (darker shade), the replacement must be the same shade. A different tint shade between the left and right side of the car does not look good and can be a reason to fail an inspection.
Seals and trims
Side windows have rubber seals and runners. Ideally a used window comes with seals, but if not, check whether you can obtain new seals for your model. Without good seals, the window will let in water and create noise.
Fitting used glass
Fitting depends on the type of glass:
Side windows in doors
Replacing a side window in a door requires removing the door panel, disconnecting the lifting mechanism (electric motor or manual regulator) and taking the old glass out. The procedure is not overly complicated but it requires care so you do not damage the lifter or the electrical connectors. Most experienced fitters handle this job in 30-60 minutes.
Windscreen
Replacing a windscreen is a job for professionals. The glass is bonded with special polyurethane adhesive that provides structural strength and water-tightness. The process involves cutting the old adhesive, cleaning the surface, applying new primer and adhesive and carefully placing the glass. After fitting, the car must not be driven until the adhesive cures according to the adhesive manufacturer's instructions.
If the glass has an ADAS camera, camera calibration via a diagnostic tool is required after fitting. That is an extra cost of EUR 50-150, but it is mandatory because an uncalibrated camera means that systems such as automatic braking and lane-departure warnings will not work properly.
Rear window
The rear window is usually bonded like the windscreen. An extra complication is the heating wires and any antenna that need to be electrically connected. Leave this job to a professional.
An alternative to used glass: aftermarket glass
In addition to used original (OEM) glass, there is also new aftermarket glass. That is glass produced by third parties (not the original car manufacturer), offered at lower prices than the originals. Quality varies from excellent (large makers such as Benson, XYG) to questionable (unknown brands).
The advantage of aftermarket glass is that it is new, so you do not have to worry about scratches and ageing. The downside is that the quality of fit, optical clarity and dimensional accuracy can vary. For side and rear windows, a quality aftermarket option is perfectly acceptable. For a windscreen, we recommend OEM or well-known aftermarket makers.
Where to find used car glass
Car glass is a common item at salvage yards because in many collisions a lot of glass on the car stays untouched. The biggest challenge is transport because glass is fragile and difficult to send by post. Local salvage yards are therefore often the best option.
Alternatively, at PoDi we connect you with suppliers of used glass for your model. Send a request through the PoDi platform and specify exactly which piece of glass you need (position, model, year, whether it has sensors). Suppliers on PoDi can usually check availability, and you arrange transport for the glass directly with the supplier.
When it makes sense to choose used glass
Used car glass, especially side and rear windows, is a smart way to save. The key is correctly assessing the condition and choosing the right type of glass for your situation. For side windows, used is almost always a good option. For a windscreen, weigh all the factors before deciding. And whatever you choose, always check the OEM markings and compatibility before buying.
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