He has been named one of the first members of the Renault UK Service Advisers' Guild.
Membership is awarded to service advisers who successfully complete a series of Renault Standards of Customer Excellence courses and score 80% or above in the end-of-course assessment.
Mill Lane service manager Keith Homer said: "The position of service adviser has traditionally been seen as a receptionist-style role. However, in this day and age the service adviser is the customer's main point of contact with the service department.
"We are delighted Graham is one of the first service advisers in the UK to be awarded guild membership and I am sure our customers will take confidence in the fact we are helping to set the benchmark for performance standards."
The top Renault service adviser teams will be recognised with a service excellence award, presented to the best-performing Renault dealers in each region, as well as an overall national winner.
These awards will take place at the end of the year and will be based on customer satisfaction results.