Auto Union Finance Ltd is car finance broker that compares over 100 car finance products from 22 lenders, including high street banks. With a team of friendly and knowledgeable car buying experts, AU Finance has over 30 years experience in new and used car finance. We have arranged finance for hundreds of thousands of customers. - Don t just take our word for it, check out our Google Reviews: Rates from 8.9% APR. Representative 12.9% APR. We are a broker not a lender. Our FCA number is 669609. Finance subject to status.