Mercedes-Benz A-Class Brake Pads: Specs, Fitment & Wear Symptoms
A genuinely useful clarification: only one side of a given axle typically has a wear sensor fitted at all, not every wheel — and not all aftermarket pad sets include a replacement sensor as standard.
Illustration for editorial purposes
Opens live listings in a new tab.
OEM Part Number: confirm via VIN — front pads (aftermarket) Brembo P 50 094 / Bosch 0 986 494 663
| Front brake pads (aftermarket) | Brembo P 50 094 (129 x 71 x 19 mm, prepared for a wear indicator, TRW/Lucas/Girling); Brembo P 50 093 (144 x 72 x 19 mm, prepared for a wear indicator, TRW/Lucas/Girling); ATE 13.0460-2779.2 (144 x 71.6 x 19.3 mm, prepared, contact excluded, TRW/Lucas/Girling); TRW GDB1932 (144 x 71.7 x 19.5 mm, prepared for a wear indicator); Bosch 0 986 494 663 (129 x 71.5 x 19 mm, sensor not stated); Ridex 402B0570 (144 x 71.5 x 19 mm, prepared for a wear indicator) |
|---|---|
| Pad sizes & variants | Two front widths: 129 mm and 144 mm, both about 71-72 mm tall and 19 mm thick. The 129 mm set suits the smaller front brake and the 144 mm set the larger one. A Ridex 402B0823 (144 x 69.8/59.9 mm) is a variant for another brake fitment. |
| Genuine (OE) numbers quoted | None quoted in catalogue listings — order genuine pads against your VIN |
| Fitment notes | Check the front disc size before choosing between 129 mm and 144 mm. |
Mercedes-Benz A-Class Brake Pads: Brake Pads Are One of the Few Truly Universal Parts
Every version of the A-Class uses brake pads that wear down through normal use — the only real variable is how quickly, which depends on engine, trim, and (where fitted) whether the car has any form of regenerative braking to ease the load.
Mercedes-Benz A-Class Brake Pads: What They Do
Brake pads clamp against the discs to convert the car's momentum into heat, slowing it down. On any version of the A-Class with hybrid assistance or regenerative braking, this system handles a meaningful share of everyday slowing, which can genuinely extend pad life compared with a purely petrol or diesel equivalent.
Mercedes-Benz A-Class Brake Pads: Watch: Replacing It
2016 car, so W176; AMG-model brakes but the procedure is similar.
Common Sizes
| Front pads, W177 | Confirm exact fitment via VIN — pad size on this model genuinely varies by engine and trim, not just by generation. |
|---|---|
| Front brake pad wear sensor, W177 | Genuinely a distinct part number from the row above on this same axle — trim or package differences like this typically mean a physically different pad, not just a relabelled one. |
| Front brake pads, W177 | Genuinely a distinct part number from the row above on this same axle — trim or package differences like this typically mean a physically different pad, not just a relabelled one. |
Opens live listings in a new tab.
A Genuinely Useful Clarification Worth Knowing — Mercedes-Benz A-Class Brake Pads
If you're wondering why only one wheel seems to have a wear sensor fitted after buying replacement pads, this is genuinely worth knowing: only one side of a given axle typically has a wear sensor fitted at all, not every wheel, which is entirely normal rather than a sign a part is missing. It's also genuinely worth knowing that not all aftermarket pad sets include a replacement sensor as standard, worth checking this specifically before assuming the correct parts have been supplied for a full, proper repair.
It's also genuinely worth knowing that a brake wear warning can sometimes appear after heavy rain, since moisture can occasionally interfere with the sensor circuit temporarily.
Mercedes-Benz A-Class Brake Pads: Wear Symptoms, DIY Difficulty & Aftermarket Advice
These are the same regardless of make or model — see our full Brake Pads Guide for warning signs to watch for, confirming fitment against your VIN, and R90-certified aftermarket brands worth trusting.
More Mercedes-Benz Brake Pads
The same part, covered across other Mercedes-Benz models.