- Apple Honda, Riverhead
- Buzz Chew Chevrolet – Cadillac
- Otis Ford — Since 1946 — Montauk Highway, Quogue
- Riverhead Bay Motors, Providing Service 20+ Years
- Riverhead Buick | GMC
- Riverhead Ford | Riverhead Lincoln
- Riverhead Toyota: HYBRID — Environmentally Friendly, Fuel Efficient, and Safe
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