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Mercedes GLA Wiper Blade Size & Fitting Guide (2020-2024)
Wiper Blade Sizes
Front blade lengths and arm fitting for the Mercedes GLA, taken from the Bosch and Valeo entries in the TecDoc-derived parts catalogue. Catalogues publish a front set as two lengths and do not state which blade belongs on the driver’s arm of a right-hand-drive car, so this table labels the blades by length rather than by side. Measure the blade you are replacing, or check both arms, before you order.
| Position | Blade length | Arm fitting |
|---|---|---|
| Front — longer blade | 650 mm (26 in) | Not resolved — see notes |
| Front — shorter blade | 475 mm (19 in) | Not resolved — see notes |
| Rear | No data available | — |
Recommended Wiper Blades for Mercedes GLA
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Confidence in this data: High front lengths, Medium fitting, none rear
Checked against: Autodoc GLA H247
Model and body-style splits: Two front arm interfaces are listed against the H247 — Cover Lock and pinch tab — most likely a production-date change the catalogue does not date. Confirm by VIN before ordering.
- Caution: The GLA’s 650 mm and 475 mm lengths are the same as Bosch A310S, so a check on length alone appears to pass. It does not fit: the H247 arm is Cover Lock and A310S is a Top Lock Aerotwin Original whose adapter is moulded in place and cannot be swapped. It will not clip on.
What Fitting Type?
Catalogue fitting for the Mercedes GLA: Cover lock (cap lock) per Bosch A206S and Valeo VF726/VF727. Autodoc also lists Valeo VF381 (574481) at 650/475 with pinch tab — two arm interfaces on one chassis.
More than one arm interface is listed against this vehicle. That normally means a production-date or market change the catalogue has not dated. Do not buy on length alone — look at the connector on your own car first.
Adapter warning. The Bosch set listed for this car is an Aerotwin Original (A-prefix). Aerotwin Originals ship with a single moulded, vehicle-specific adapter — they are not multi-fit and will not clip onto a different arm type. Bosch’s multi-fit products are the Aerotwin Retrofit (AR-prefix) and Aerotwin Plus (AP-prefix) ranges.
Right-hand drive. At least one supplier publishes a distinct right-hand-drive part number for this vehicle. On a UK car the blades sweep the opposite way to a left-hand-drive car, and the profile and stops differ, so buy the part the catalogue flags for right-hand drive where one exists — the references below say which.
Fit blades in pairs. Both front blades age at the same rate, so replacing only the streaking one usually means doing the other within weeks.
Recommended Wiper Blades
Bosch A206S
A206S (3397014206) 650/475 Cover Lock — A-series Original, flagged left-hand drive. Retrofit singles also listed: APX26 (3397016313) 650 and APX19 (3397016307) 475, multi-clip.
Valeo VF726
VF726 (577726) and VF727 (577727), both 650/475 Cover Lock, both flagged right-hand drive; VF381 (574481) 650/475 Pinch tab.
Check by registration
The rear blade for this vehicle is not established in the data we checked. No data available. Use a seller’s registration lookup rather than buying on length alone.
How to Replace Wiper Blades
Changing the front blades on the Mercedes GLA takes a few minutes and needs no tools.
- Lift the arm away from the glass until it locks upright, and lay a folded cloth on the screen in case it drops.
- Release the old blade. Release the blade at the connector. Because more than one arm type is catalogued for this car, check which connector yours actually has before you order.
- Compare old and new side by side before fitting — same length, same connector. If the adapter does not match, stop; forcing it damages the arm.
- Fit the new blade until the catch clicks home, then tug it gently to confirm it is locked.
- Lower the arm back to the glass by hand. Repeat on the other side, then test with plenty of washer fluid on a wet screen.
Never let a bare arm snap back onto the glass — a windscreen chipped that way is not covered by the blade warranty.
When to Replace Your Wipers
Wiper rubber hardens with UV and heat rather than with mileage, so a set on a car that is parked outside will usually be finished in about 12 months whatever the distance covered. Replace them when you see any of the following:
- Streaks or a haze left behind on the return sweep
- Juddering or chattering across the glass
- Missed strips of screen, especially at the top of the sweep
- Splits, curling or a shiny, glazed edge on the rubber
- Squealing that does not clear with a wash and a wipe of the rubber
Clean the rubber with a damp cloth every few weeks and clear leaves and grit from the base of the screen; both add months to a set. A blade that still streaks after cleaning is worn, not dirty.
Frequently Asked Questions
What size wiper blades does a Mercedes GLA need?
The catalogue front set for the Mercedes GLA is 650 mm (26 in) and 475 mm (19 in). The catalogue does not say which of the two goes on the driver’s arm of a right-hand-drive car, so measure the blade you are replacing rather than assuming the longer one is the driver’s.
What fitting type do Mercedes GLA wipers use?
The Mercedes GLA is catalogued as: cover lock (cap lock) per Bosch A206S and Valeo VF726/VF727. Autodoc also lists Valeo VF381 (574481) at 650/475 with pinch tab — two arm interfaces on one chassis. Note that Bosch Aerotwin Original (A-prefix) sets carry one moulded, vehicle-specific adapter and are not multi-fit.
What rear wiper blade does a Mercedes GLA take?
No data available for the rear blade on the Mercedes GLA. Where suppliers disagree or list nothing, we say so rather than guess — check by registration.
How often should I replace Mercedes GLA wiper blades?
About once a year for most UK cars. Wiper rubber degrades with UV, heat and grit rather than with mileage, so a car parked outside will need blades sooner than the distance covered suggests. Replace them as soon as they streak, judder or miss part of the sweep after cleaning.
Does the Mercedes GLA need a right-hand-drive specific set?
Yes — at least one supplier publishes a distinct right-hand-drive part for this vehicle, listed in the references on this page. A UK car sweeps the opposite way to a left-hand-drive car and the blade profile and park position differ, so use the right-hand-drive part where the catalogue offers one.
Other Mercedes Gla Guides
Engine Oil GuideCorrect grade & capacity
Cabin Filter GuideFilter type & replacement
Battery GuideSize, type & specs
Spark Plug GuideType & gap settings
How we check fitment for this guide
We cross-reference fitment figures against manufacturer specifications and OE-supplier catalogue data where available, and matched to the standard codes that actually govern fit — battery type/group sizes, wiper lengths and fitting types, bulb fitment codes, tyre size markings, and oil specifications. We work by make, model, year, engine, and build date, because a single model can take different parts across its life. Where the right part depends on your exact vehicle, we tell you to confirm by registration or VIN. More on our method →