Just bought it for my huyndai getz. It disables the alarm but doesn't fit perfectly. The gap in the center is exactly the size of the manufacturer, it just needed a thicker iron to cover a larger surface

For Renault Mégane 2014 dci, it doesn't fit, it doesn't latch, nevertheless, I removed the metal part, the one that latches onto the seatbelt slot, and I put it in and take it out when needed. It arrived on time as scheduled by the transportation company.

It fits perfectly in the belt position, but my belt gets stuck in it too!... but... for some reason, the alarm or belt indicator doesn't stop beeping! In a DS3! As soon as I move it slightly forward or backward... it finds the contact, but when I take my hand off, it loses it again... I tried bending the tongues with pliers hoping they would stay in place... something happened, but they loosen up again!
The funniest and most ironic thing is that even when I wear the belt properly through it... it still beeps.
Where I used to have moments of alarm... and it made me dizzy... now I have it constantly)))))))))
Maybe in other cars there won't be an issue... your risk is small