Overall great experience, the staff was very helpful and kind. The whole process was smooth and easy.
1. the Sixt office at Stratford International was closed and it took a while to find the one in Westfield Park B.
2. It took half an hour for the car to be ready even if I was there at the right time.
3. I really enjoyed the car (Audi A4), but at 70mph and above it produced a very noisy and annoying vibration. So I guess the maintenance could have been better.