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THE ITALIAN COACHBUILDER SITE

NSU Trapeze

1973Coachwork by Bertone

THE VEHICLE AT A GLANCE

Model dossier

Production period
1973
Body style
Coupé
Engine
2-rotor Wankel, rear-mid engine
Type
Concept
Displacement
995 cc
Power
115 hp
Seats
4

THE PEOPLE BEHIND THE CAR

Coachbuilding, design & conversions

PRICE & SALES RECORD

Vehicle value

Original price
Not documented
Latest recorded sale
Not documented

01 / THE STORY

History & context

The NSU Trapeze was a groundbreaking concept car presented by Bertone at the 1973 Paris Motor Show. Designed to showcase Bertone’s expertise in innovative automotive design, the Trapeze featured a distinctive, futuristic style inspired by the Stratos. It was powered by the NSU RO80’s rotary piston engine, which was mounted centrally in the rear, a bold choice that allowed Bertone to explore new approaches to both engineering and design. This choice was influenced by the fact that the patent for the rotary piston engine was set to enter the public domain in 1972, sparking widespread enthusiasm among automakers, especially before the 1973 oil crisis shifted priorities. The project came at a time when Bertone was eager to continue its collaboration with Audi, following its work on the Audi 50. In an attempt to make its mark with Audi, Bertone chose to work with NSU—thus avoiding direct competition with Ital Design’s own coupé concept for Audi: The Asso di Picche. The Trapeze was intended to impress the German automotive giant with Bertone’s skills, while also positioning NSU as a contender for the American market with an appealing, image-boosting vehicle. The two front seats, set very close together, allowed the passengers in the back to stretch out their legs fully in the space created between the front seats and the door. Despite knowing that NSU’s future was uncertain, Bertone saw this as an opportunity to demonstrate innovation through design. Marcello Gandini, who led the project, embraced an avant-garde approach to the Trapeze’s layout. The rotary engine, positioned centrally, became the car’s focal point, with the cabin designed around it. The rear seats were separated on either side of the engine, and the front seats were positioned closer together to free up legroom. This trapezoidal arrangement, with its innovative use of space, gave the car its name. Despite its compact length of 4.03 meters (similar to the VW-Porsche 914), the Trapeze was 18 cm wider, emphasizing its bold proportions and unique design. The Trapeze also made significant strides in safety design. Bertone’s team ensured the vehicle met the new American safety standards that came into effect in 1972. The space around the front seats provided a protective zone in the event of a side impact, while the car’s exterior featured a continuous bumper design, wrapping around the entire vehicle for enhanced safety. Gandini’s strong graphic sense gave the Trapeze a clean, dynamic aesthetic that combined style with function. However, the timing of the Trapeze’s debut proved unfortunate. Just two days after its presentation, the Yom Kippur War erupted, triggering the OPEC oil embargo and causing a sharp rise in oil prices. This geopolitical shift spelled the end for the Wankel engine, which was known for its fuel inefficiency, rendering the Trapeze’s technological innovation unsustainable. The Trapeze’s fate was also tied to broader shifts within the Volkswagen Group. Amid financial struggles, VW focused on consolidating its investments, and NSU, once a promising brand, found itself on the chopping block. With the retirement of NSU’s design director, Ludwig Kraus, and the appointment of Ferdinand Piëch, who preferred working with Ital Design’s Giugiaro, NSU’s future was in jeopardy. The Trapeze, despite its bold design and engineering, never saw production. Though the Trapeze was a visionary concept, it was ultimately overshadowed by the oil crisis and the shifting priorities within the automotive industry. Today, the Trapeze stands as a testament to Bertone’s ability to push the boundaries of automotive design, blending advanced technology with cutting-edge style.

02 / TECHNICAL IDENTITY

Specifications & construction

Production & construction

Production type
Concept
Mechanical platform
NSU Ro 80 mechanical basis

Engine & performance

Engine configuration
2-rotor Wankel, rear-mid engine
Displacement
995 cc
Power (hp)
115 hp
Torque
158 Nm
Drive
Rear-wheel drive
Specification notes
ASI Bertone documents Trapeze on NSU Ro 80 mechanical basis with the rotary engine mounted centrally between the rear seats. Published technical accounts give the two-rotor 2×497.5 cc Wankel, 115 hp and 158 Nm, rear-wheel drive and four-seat trapezoidal layout. Legacy body dimensions are not promoted because sources conflict on exact length.

Dimensions & accommodation

Length
4,008 mm
Width
1,830 mm
Height
1,100 mm
Seats
4

Design & manufacture

Coachbuilder / Body Builder · Documented
Bertone
Designer · Documented
Marcello Gandini
Manufacturer · Documented
NSU

04 / INDIVIDUAL HISTORY

Chassis & provenance

Ownership & provenance

Ownership & history · Legacy attribution
Car Collection

06 / EVENTS & AWARDS

Events & awards

Paris General · legacy_preserved
Date
1973
Chassis
General

Preserved CI 1.0 relation. Evidence field: _yoast_wpseo_primary_events. No award inferred.

08 / FROM THE ARCHIVE

Archive

References held in the vehicle dossier. Their inclusion does not establish that every historical claim has been independently verified.

ReferenceSource type
ASI — Collezione ASI Bertone, NSU Trapèze asifed.it Institutional collection reference
Bertone Public Relations press release 7/73 — Trapeze www.jc43.fr Period press release reproduction

10 / CONNECTED HISTORY

Timeline

Chronological history1 dated records
  1. Unassigned chassis · Event

    Paris

THE CONVERSATION

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