Thanks to Jonny at JMB Retrofits, got them professionally installed for a fantastic price. This is what I originally paid Audi £300 for! Stood out quite a bit from the bumper Someone went into my bumper when we last had some snow so had it replaced and did not get these sensors reinstalled. Lots of snow in the morning but the S3 coped with the journey fine Not straightforward taking off the bumper Car is filthy but sensors look and work great! Cheers JMB!