I installed LED bulbs on my Twizy. They are these from Ebay
They claim to be “genuine Philips” but I have my doubts. However the quality looks very good.
Initially I thought they would not fit. As seen above, the LED bulb is fitted with blue cooling strips which are left hanging outside. There is no way those would fit throught the Twizy bulb holder, the brownish piece. I thought I need to make the hole larger.
However then I realized the flange can be removed from the bulb. It’s then very easy to push through the bulb holder and reattach the flange. So no modification needed!
In the pictures below, only one bulb has been changed. I wanted to compare the light pattern between the two. It is reasonably OK, although there is a small amount of “leakage” from the LED bulb, as seen in the picture. All the blur above the bright area is from the LED, original H4 does not have that.
One thing I found interesting, the light pattern is flat even with stock bulbs. Usually on it rises to one side, left or right depending if LHD or RHD… But then I looked at the E-marking on the Twizy headlight. It has arrow pointing to both left and right! This means it’s approved for both LHD and RHD traffic! I didn’t know such thing is even possible. But apparently Renault is fitting all Twizys with same lights.