The N175 was a racecar that was built by Ensign in the 1975 season of Formula one and by Boro in the 1976 and 1977 seasons. The car was driven by Gijs van Lennep, Roelef Wunderink, Chris Amon, Lerry Perkins and Brian Henton.

The car had a 3000cc Ford Cosworth DFV V8 engine and a Hewland DG 400 five-speed manual geabox. It rode on Goodyear tyres.

Under Ensign, the car debuted at the 1975 France GP and saw it's last race at the 1975 USA GP. Like it's earlier siblings the N175 did not enjure much success during its season with Ensign managing the team.