Almera Speedometer and Braking Issue

I've seen something similar on my Almera. Could be ABS or the brake booster? Any weird noises or vibrations when braking? Recent brake service?

No unusual noises or vibrations. Could incorrect bleeding cause this?

That's what happened to me. Shop said incorrect bleeding caused a faulty brake booster pressure sensor. Get a technician to check it.

Brake booster pressure sensor was the problem. Cost 90€. Improper bleeding, like you thought. Thanks!