The rear of my 2008 Audi A8 fell to the ground. Tried to change the air in the racks did not help. I decided to rebuild my air compressor with a repair kit, but found that it was rusted inside and was no longer good. I came to Revain and found this compressor. Installed which turned out to be easier than I expected, the car lifted and all the suspension lights went away. I highly recommend this product.