Old thread, not bumping but posting my own view for Sharayu, before that though Navi Mumbai/Panvel has another Hyundai Dealer i.e Kaizen Hyundai as said by nickandre, but it has been into its own issues since last year, so my advice would be to avoid them.
Coming to Sharayu, I had my first ever booking with them and it was all smooth, the deal was done at my house, only the payment was made after visiting the showroom as to get the receipts and have a look the demo car, the color and get a proper detail of the same. I reside in Panvel, and they were courteous to get a TD all to my house, luckily the sales person resides in Panvel too, so that was an added advantage for me.
Everything was smooth, until the package that I purchased as the promised Teflon or the so called polishing wasn't satisfactory with them for which I had raised an issue with them during the first service and the adviser and though it wasn't his responsibility nor did I wanted a polishing to be done by them, he did promise to get me one polishing done from his side for free that is the next time I visit.
My service adviser is quite well understanding and did everything asked, was polite and explained me with the doubts that I had, so until now am pretty satisfied with them.
Now that there are two more Hyundai service centers near to my residency, I will stop going to Sharayu since one is just like 4-5 minutes away and I know the service manager, and am open to monitor the servicing of my vehicle down in there.
@For those who are going to ignore Sharayu, just don't depend on one review, its sometimes also about your luck. Feel bad about nick but you won't experience anything unless you have had a first hand experience. :)