I am servicing my Santro at Sanjay Motors for last many years > 8 and I am happy about the way my car is running now.
Sometimes they charge high but you should be smart enough to handle those service engineers, finally you are who is going to shell out money.
I am running my car after 8 years itself speaks, I faced some engine problem but they were rectified although I paid some substantial money but the problem was done.
Overall if you are buying hyundai product in Pune go to them.
Wishing you Good Luck !