My A3 Cabrio started out brand new in April 2017, and has just flagged up the need for an oil change at 9500 miles. Local Audi dealer said that a full 2-year service will be due in April anyway, so he suggested they do both now to save me going back in two months, for which they would charge a grand total of £402.
Whether that's a good price or not, I've no idea, but I've agreed to it. The price includes collecting and returning the car to my home, which saves me a lot of hassle.