The service is good though costly. Learnt bitter lesson never to purchase car accessories from the road shops if they are not the ones responsible for warranty directly in replacing damaged items before warranty expiration.
This because I still have one month warranty left for the Acdelco car battery for my car but the road side shop couldn't changed it or take responsiblity for it. The most painful part is that the battery couldn't be changed to new one even with the one month left because it's wrong application that is installing car battery not meant for a particular car based on the manufacturer's specifications.
Despite pre booking an appointment these people make you wait for more than an hour..
Always rushed up... go only if you have lot of time to spare and want to get your car serviced at an average rate..
Else opt for authorised dealer