Newton's Coachways was a charter coach, sightseeing and school bus company and was formed from an earlier business Marshall Motors in 1962 which was bought by Stewart Newton and Norma Newton (née Marshall) from Norma's uncle. In 1991 Newton's took over the Dunedin area services and fleet of the New Zealand Railways Road Services, then known as Cityline and re-branded it Newton's City Line.
Newton's Coachways emerged from Marshall Motors in 1962 after Stewart Newton and his wife Norma purchased the company from her uncle. Subsequently, in 1991, Newton's acquired Cityline's services and rechristened them as Newton's City Line.