The set was installed in my wife's Fiat 500E. I was going for more light and lower power draw. These fit the bill as direct replacements. It was installed fairly easily, although it's tight in this little car.It DID cause an error code with the CANBUS, but the error would not be detected if the headlight is left in the on position. The light is brighter than the OEM incandescent bulbs, and a lot bluer. It matches the electric Fiat nicely.The first one died at 6 months (~4,000 miles). I contacted the seller here on Amazon (click on the Auxito Direct link) and received a full set of replacements within a few days. The new light has been working since.A quick note, though, is that removing the bulb may only remove part of it, leaving the plastic flange in, so make sure you get the flange out when you replace these as well.Overall, I am quite satisfied, especially for the service. The manufacturer stands behind their products.