Greenbelt Service Center / Sunoco is a hometown gas station and service center that has served generations of families in Greenbelt and the surrounding areas. It offers a full range of automotive services, including oil changes, tire installation and repair, state inspections, brake work, and general automotive repair. Customers describe the staff as friendly, kind, professional, respectful, pleasant, honest, and trustworthy. The mechanics are noted as being among the best around, providing quality workmanship and getting repairs right the first time. Service is consistently described as efficient and fairly priced, with reasonable price points. Many customers appreciate the convenience of dropping vehicles off in the morning with the expectation they will be completed within a few hours, a promise the business is known to keep accurately. A local business owner notes the shop's integrity in honoring "not to exceed" repair limits. While highly recommended, one note suggests avoiding visits after 9 PM due to crime in the area. A minor critique is that the shop does not always call immediately when a car is ready, sometimes requiring the customer to call first. Overall, it is considered a reliable, convenient, and trustworthy service center where customers have returned for years with multiple vehicles.