The N180B used by Ensign in the 1981 season was the evolution of N180 model designed by Ralph Bellamy and Nigel Bennett for 1980 season. The design was essentially inspired by Williams FW07. In order to maximize the area available for the underbody ground-effect venturis, in-board suspension was fitted on all four corners and a relatively long wheelbase was chosen. Like most cars on the grid, the N180 was powered by the latest evolution of the venerable Cosworth DFV engine. For the 1981 the car was slightly upgraded to ‘B’ specification. Marc Surer piloted this car in the first six rounds of the season, scoring excellent fourth and sixth place finishes, in Brazil and Monaco, respectively. Surer then moved to Theodore, and during the remaining rounds, Eliseo Salazar was Ensign’s designated driver. The Chilean added a further point to the team’s tally by finishing sixth in the Dutch Grand Prix.
| Season | Series | Event |
| 1981 | F1WC | Monaco GP |
| Driver | No. | Entrant |
| Marc Surer | 14 | Ensign Racing |
| Scale | Manufacturer | Collection |
| 1:43 | Spark | Raceland Gold Edition |
| Cat. No. | Quality | Rarity |
| RS1726 | 
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