Foresters and Outbacks share a driver assistance system and very little else about the way their glass behaves. If you own both, or you are comparing quotes, the differences are worth knowing.
The upright windshield takes hits square
This is the single biggest practical difference between a Forester and an Outback, and it shows up in our job records.
The Forester windshield is noticeably more upright. That is good for visibility and interior space and it is the reason the car feels airy. It is bad for glass.
A steeply raked windshield deflects a lot of what hits it. A stone arrives at a shallow angle and glances off. An upright screen takes the same stone closer to square, and a square hit transfers far more of its energy into the glass rather than skipping off it.
The result is that on identical roads, a Forester collects more chips than an Outback, and the chips are more often deep enough to matter. If you have moved from one to the other and feel like you are suddenly unlucky, you are not.
What to do about it
You cannot change the rake of the glass, so the lever you have is following distance.
Stones lose energy quickly over distance, so the gap you leave is the main thing under your control. Six seconds behind anything loaded on a gravel road, four behind a car at highway speed. On an upright screen this matters more than it does on a raked one.
And tape any chip you do collect. Contamination in the cavity is the most common reason a fillable chip becomes a replacement, and a Forester gives you more chances to get this right. See what to do in the first hour after a rock chip.
EyeSight, and why the year matters
EyeSight has been through several generations, and the version in a Forester varies with the model year. The camera positions, the bracket design and the calibration procedure are not identical across them.
In practice this means the year is not a formality when you book. Two Foresters a few years apart can need different targets and a different procedure. Telling us the year up front means the right equipment is on the van.
What does not vary is the principle. EyeSight uses a stereo camera pair bonded to the glass, so replacing the glass moves both cameras and the system has to be recalibrated. See what ADAS calibration actually does.
Calibration needs more room than people expect
Static calibration puts a target board at a set distance directly in front of the vehicle, on level ground, under controlled lighting. That is a genuine space requirement, not a preference.
A sloped driveway throws the geometry off. Strong low sun across the target upsets the reading. A cramped garage does not give the working distance.
So for Forester work we will ask about where the car will be. Often a driveway is fine. When it is not, we will say so rather than doing it badly, and explain where we would rather do it. The reasoning is in mobile versus in-shop replacement.
Glass options to mention
- The model year, which determines the EyeSight generation
- Whether the wipers come on by themselves, meaning a rain sensor
- A heated wiper park area at the base of the glass
- Acoustic interlayer, which is quieter and costs more
Booking
Call or text (970) 608-4888 with the year and where the car will be parked. We are mobile across Greeley and Weld County.
Related
- Subaru Outback. Same system, larger and more raked glass.
- Subaru windshield replacement. The category page.
- Rock chip and crack repair. Worth reading if you collect chips often.