We can't find that page, but we've found something similar.
There doesn't appear to be anything at https://www.motorlet.co.uk/car-leasing/audi/a6/diesel-saloon-50-tdi-quattro-black-edition-4dr-tip-auto?p%5B0%5D=6 but we think we've found what you're after at /car-leasing/audi/a6.
You will be redirected there momentarily...