Does the replacement windshield come with features to reduce sun glare, which is particularly beneficial in the bright and sunny climate of Ahmedabad?

Yes, many automotive service providers and windshield manufacturers do offer windshields with sun glare reduction features. These windshields are typically treated or coated to filter out certain light frequencies, thereby reducing glare and making driving in bright conditions more comfortable.
Do service providers in Ahmedabad offer loyalty discounts or special rates for repeat customers or for those who come in on the recommendation of previous customers?

Yes, there are many discounts or offers available for windshield replacement by GoMechanic. For that, you can download the app GoMechanic for particular details.
Are there any model-specific aftercare instructions for the Tata Sumo Gold following windshield replacement?

Yes, it can include advice on driving speeds, car washes, or the use of wipers soon after installation.
For the Tata Sumo Gold, what are the pros and cons of choosing OEM (Original Equipment Manufacturer) glass over certified aftermarket glass?

When deciding on replacement glass for the Tata Sumo Gold, the choice between OEM and certified aftermarket glass boils down to balancing cost with quality. OEM glass ensures a perfect fit and superior quality, important for maintaining the vehicle's integrity and warranty, but at a higher price and possibly less availability. Certified aftermarket glass is more affordable and readily available, with quality that can match OEM, though variability and fit issues may arise, potentially affecting the warranty. The decision ultimately depends on your budget, how long you plan to keep the vehicle, and the value you place on originality, with many preferring the reliability of OEM despite the cost.